/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 07:15:28,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 07:15:28,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 07:15:28,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 07:15:28,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 07:15:28,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 07:15:28,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 07:15:28,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 07:15:28,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 07:15:28,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 07:15:28,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 07:15:28,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 07:15:28,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 07:15:28,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 07:15:28,394 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 07:15:28,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 07:15:28,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 07:15:28,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 07:15:28,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 07:15:28,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 07:15:28,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 07:15:28,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 07:15:28,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 07:15:28,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 07:15:28,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:15:28,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 07:15:28,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 07:15:28,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 07:15:28,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 07:15:28,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 07:15:28,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 07:15:28,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 07:15:28,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 07:15:28,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 07:15:28,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 07:15:28,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 07:15:28,716 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 07:15:28,718 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 07:15:28,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-06-05 07:15:28,719 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-06-05 07:15:28,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 07:15:28,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 07:15:28,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 07:15:28,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 07:15:28,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 07:15:28,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 07:15:28,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 07:15:28,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 07:15:28,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 07:15:28,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... [2021-06-05 07:15:28,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 07:15:28,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 07:15:28,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 07:15:28,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 07:15:28,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:15:28,858 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 07:15:28,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 07:15:28,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 07:15:28,860 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 07:15:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 07:15:28,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 07:15:28,860 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 07:15:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 07:15:28,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 07:15:28,861 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 07:15:28,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 07:15:28,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 07:15:28,862 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 07:15:28,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 07:15:28,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 07:15:28,863 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 07:15:29,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 07:15:29,016 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 07:15:29,017 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:15:29 BoogieIcfgContainer [2021-06-05 07:15:29,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 07:15:29,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 07:15:29,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 07:15:29,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 07:15:29,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 07:15:28" (1/2) ... [2021-06-05 07:15:29,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e0d5f and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:15:29, skipping insertion in model container [2021-06-05 07:15:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:15:29" (2/2) ... [2021-06-05 07:15:29,023 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-06-05 07:15:29,028 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 07:15:29,028 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 07:15:29,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 07:15:29,029 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 07:15:29,069 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 07:15:29,094 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 07:15:29,110 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:15:29,110 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:15:29,110 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:15:29,111 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:15:29,111 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:15:29,111 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:15:29,111 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:15:29,111 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:15:29,119 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-06-05 07:15:29,600 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:29,665 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:29,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:29,667 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash -127225446, now seen corresponding path program 1 times [2021-06-05 07:15:29,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:29,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854978456] [2021-06-05 07:15:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:29,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:29,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854978456] [2021-06-05 07:15:29,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854978456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:29,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:29,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:15:29,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426863869] [2021-06-05 07:15:29,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 07:15:29,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:29,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 07:15:29,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 07:15:29,907 INFO L87 Difference]: Start difference. First operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:29,994 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-06-05 07:15:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 07:15:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:30,048 INFO L225 Difference]: With dead ends: 4197 [2021-06-05 07:15:30,048 INFO L226 Difference]: Without dead ends: 4197 [2021-06-05 07:15:30,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 07:15:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-06-05 07:15:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-06-05 07:15:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 3.436367969494757) internal successors, (14419), 4196 states have internal predecessors, (14419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-06-05 07:15:30,317 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-06-05 07:15:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:30,318 INFO L482 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-06-05 07:15:30,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-06-05 07:15:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:30,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:30,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:30,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 07:15:30,333 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:30,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1294182084, now seen corresponding path program 2 times [2021-06-05 07:15:30,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:30,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922465539] [2021-06-05 07:15:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:30,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:30,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922465539] [2021-06-05 07:15:30,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922465539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:30,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:30,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 07:15:30,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637955449] [2021-06-05 07:15:30,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 07:15:30,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 07:15:30,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 07:15:30,367 INFO L87 Difference]: Start difference. First operand 4197 states and 14419 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:30,400 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-06-05 07:15:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 07:15:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:30,419 INFO L225 Difference]: With dead ends: 3290 [2021-06-05 07:15:30,420 INFO L226 Difference]: Without dead ends: 3290 [2021-06-05 07:15:30,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 07:15:30,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-06-05 07:15:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-06-05 07:15:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 3.367892976588629) internal successors, (11077), 3289 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-06-05 07:15:30,590 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-06-05 07:15:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:30,591 INFO L482 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-06-05 07:15:30,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-06-05 07:15:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:30,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:30,604 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:30,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 07:15:30,605 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:30,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:30,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1879996152, now seen corresponding path program 3 times [2021-06-05 07:15:30,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:30,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414481244] [2021-06-05 07:15:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:31,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:31,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414481244] [2021-06-05 07:15:31,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414481244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:31,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:31,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:31,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124716231] [2021-06-05 07:15:31,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:31,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:31,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:31,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:31,265 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:32,828 INFO L93 Difference]: Finished difference Result 3861 states and 12851 transitions. [2021-06-05 07:15:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:15:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:32,852 INFO L225 Difference]: With dead ends: 3861 [2021-06-05 07:15:32,853 INFO L226 Difference]: Without dead ends: 3794 [2021-06-05 07:15:32,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 995.1ms TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:15:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-06-05 07:15:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3406. [2021-06-05 07:15:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3612334801762116) internal successors, (11445), 3405 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11445 transitions. [2021-06-05 07:15:33,006 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11445 transitions. Word has length 39 [2021-06-05 07:15:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:33,006 INFO L482 AbstractCegarLoop]: Abstraction has 3406 states and 11445 transitions. [2021-06-05 07:15:33,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11445 transitions. [2021-06-05 07:15:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:33,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:33,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:33,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 07:15:33,017 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:33,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash 160380182, now seen corresponding path program 4 times [2021-06-05 07:15:33,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:33,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427806195] [2021-06-05 07:15:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:33,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:33,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427806195] [2021-06-05 07:15:33,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427806195] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:33,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:33,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:33,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245542371] [2021-06-05 07:15:33,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:33,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:33,360 INFO L87 Difference]: Start difference. First operand 3406 states and 11445 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:35,111 INFO L93 Difference]: Finished difference Result 3950 states and 13052 transitions. [2021-06-05 07:15:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:15:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:35,146 INFO L225 Difference]: With dead ends: 3950 [2021-06-05 07:15:35,146 INFO L226 Difference]: Without dead ends: 3907 [2021-06-05 07:15:35,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1110.8ms TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:15:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-06-05 07:15:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3412. [2021-06-05 07:15:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.359132219290531) internal successors, (11458), 3411 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11458 transitions. [2021-06-05 07:15:35,244 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11458 transitions. Word has length 39 [2021-06-05 07:15:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:35,245 INFO L482 AbstractCegarLoop]: Abstraction has 3412 states and 11458 transitions. [2021-06-05 07:15:35,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11458 transitions. [2021-06-05 07:15:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:35,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:35,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:35,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 07:15:35,254 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1620218120, now seen corresponding path program 5 times [2021-06-05 07:15:35,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:35,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151520801] [2021-06-05 07:15:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:35,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:35,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151520801] [2021-06-05 07:15:35,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151520801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:35,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:35,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:35,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310115588] [2021-06-05 07:15:35,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:35,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:35,530 INFO L87 Difference]: Start difference. First operand 3412 states and 11458 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:37,129 INFO L93 Difference]: Finished difference Result 3905 states and 12948 transitions. [2021-06-05 07:15:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:15:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:37,143 INFO L225 Difference]: With dead ends: 3905 [2021-06-05 07:15:37,144 INFO L226 Difference]: Without dead ends: 3841 [2021-06-05 07:15:37,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1027.1ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:15:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-06-05 07:15:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3394. [2021-06-05 07:15:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3642793987621573) internal successors, (11415), 3393 states have internal predecessors, (11415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11415 transitions. [2021-06-05 07:15:37,284 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11415 transitions. Word has length 39 [2021-06-05 07:15:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:37,284 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11415 transitions. [2021-06-05 07:15:37,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11415 transitions. [2021-06-05 07:15:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:37,293 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:37,293 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:37,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 07:15:37,294 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:37,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:37,294 INFO L82 PathProgramCache]: Analyzing trace with hash -999783720, now seen corresponding path program 6 times [2021-06-05 07:15:37,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:37,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367350400] [2021-06-05 07:15:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:37,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:37,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367350400] [2021-06-05 07:15:37,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367350400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:37,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:37,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:37,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451938609] [2021-06-05 07:15:37,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:37,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:37,611 INFO L87 Difference]: Start difference. First operand 3394 states and 11415 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:38,810 INFO L93 Difference]: Finished difference Result 3861 states and 12845 transitions. [2021-06-05 07:15:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:15:38,810 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:38,823 INFO L225 Difference]: With dead ends: 3861 [2021-06-05 07:15:38,823 INFO L226 Difference]: Without dead ends: 3794 [2021-06-05 07:15:38,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 706.9ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:15:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-06-05 07:15:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3402. [2021-06-05 07:15:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-06-05 07:15:38,911 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-06-05 07:15:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:38,912 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-06-05 07:15:38,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-06-05 07:15:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:38,923 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:38,923 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:38,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 07:15:38,923 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:38,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1130378568, now seen corresponding path program 7 times [2021-06-05 07:15:38,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:38,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245487378] [2021-06-05 07:15:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:39,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:39,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245487378] [2021-06-05 07:15:39,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245487378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:39,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:39,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:39,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663784233] [2021-06-05 07:15:39,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:39,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:39,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:39,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:39,210 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:40,357 INFO L93 Difference]: Finished difference Result 3849 states and 12805 transitions. [2021-06-05 07:15:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:15:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:40,369 INFO L225 Difference]: With dead ends: 3849 [2021-06-05 07:15:40,369 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 07:15:40,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 735.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:15:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 07:15:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3394. [2021-06-05 07:15:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3631005010315356) internal successors, (11411), 3393 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11411 transitions. [2021-06-05 07:15:40,458 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11411 transitions. Word has length 39 [2021-06-05 07:15:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:40,458 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11411 transitions. [2021-06-05 07:15:40,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11411 transitions. [2021-06-05 07:15:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:40,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:40,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:40,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 07:15:40,466 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1266057160, now seen corresponding path program 8 times [2021-06-05 07:15:40,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:40,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170007493] [2021-06-05 07:15:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:40,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:40,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170007493] [2021-06-05 07:15:40,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170007493] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:40,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:40,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:40,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049567009] [2021-06-05 07:15:40,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:40,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:40,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:40,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:40,734 INFO L87 Difference]: Start difference. First operand 3394 states and 11411 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:42,192 INFO L93 Difference]: Finished difference Result 4016 states and 13206 transitions. [2021-06-05 07:15:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:15:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:42,203 INFO L225 Difference]: With dead ends: 4016 [2021-06-05 07:15:42,203 INFO L226 Difference]: Without dead ends: 3973 [2021-06-05 07:15:42,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 937.2ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:15:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-06-05 07:15:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3402. [2021-06-05 07:15:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-06-05 07:15:42,286 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-06-05 07:15:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:42,287 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-06-05 07:15:42,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-06-05 07:15:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:42,293 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:42,293 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:42,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 07:15:42,294 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:42,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1248311834, now seen corresponding path program 9 times [2021-06-05 07:15:42,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:42,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073836371] [2021-06-05 07:15:42,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:42,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:42,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073836371] [2021-06-05 07:15:42,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073836371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:42,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:42,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:42,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945334560] [2021-06-05 07:15:42,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:42,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:42,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:42,559 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:43,971 INFO L93 Difference]: Finished difference Result 4004 states and 13168 transitions. [2021-06-05 07:15:43,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:15:43,972 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:43,983 INFO L225 Difference]: With dead ends: 4004 [2021-06-05 07:15:43,983 INFO L226 Difference]: Without dead ends: 3952 [2021-06-05 07:15:43,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 927.7ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:15:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2021-06-05 07:15:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3396. [2021-06-05 07:15:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3625920471281296) internal successors, (11416), 3395 states have internal predecessors, (11416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11416 transitions. [2021-06-05 07:15:44,068 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11416 transitions. Word has length 39 [2021-06-05 07:15:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:44,068 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11416 transitions. [2021-06-05 07:15:44,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11416 transitions. [2021-06-05 07:15:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:44,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:44,076 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:44,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 07:15:44,076 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:44,076 INFO L82 PathProgramCache]: Analyzing trace with hash -347573590, now seen corresponding path program 10 times [2021-06-05 07:15:44,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:44,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132483618] [2021-06-05 07:15:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:44,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:44,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132483618] [2021-06-05 07:15:44,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132483618] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:44,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:44,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:44,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733917722] [2021-06-05 07:15:44,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:44,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:44,292 INFO L87 Difference]: Start difference. First operand 3396 states and 11416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:45,473 INFO L93 Difference]: Finished difference Result 3977 states and 13079 transitions. [2021-06-05 07:15:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:15:45,473 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:45,481 INFO L225 Difference]: With dead ends: 3977 [2021-06-05 07:15:45,481 INFO L226 Difference]: Without dead ends: 3922 [2021-06-05 07:15:45,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 728.3ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:15:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-06-05 07:15:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3396. [2021-06-05 07:15:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3620029455081) internal successors, (11414), 3395 states have internal predecessors, (11414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11414 transitions. [2021-06-05 07:15:45,563 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11414 transitions. Word has length 39 [2021-06-05 07:15:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:45,563 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11414 transitions. [2021-06-05 07:15:45,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11414 transitions. [2021-06-05 07:15:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:45,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:45,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:45,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 07:15:45,571 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:45,571 INFO L82 PathProgramCache]: Analyzing trace with hash 825078632, now seen corresponding path program 11 times [2021-06-05 07:15:45,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:45,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511886064] [2021-06-05 07:15:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:45,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:45,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511886064] [2021-06-05 07:15:45,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511886064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:45,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:45,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:45,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202684172] [2021-06-05 07:15:45,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:45,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:45,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:45,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:45,817 INFO L87 Difference]: Start difference. First operand 3396 states and 11414 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:46,929 INFO L93 Difference]: Finished difference Result 3912 states and 12927 transitions. [2021-06-05 07:15:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:15:46,930 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:46,936 INFO L225 Difference]: With dead ends: 3912 [2021-06-05 07:15:46,936 INFO L226 Difference]: Without dead ends: 3866 [2021-06-05 07:15:46,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 703.0ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:15:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-06-05 07:15:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3400. [2021-06-05 07:15:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.360400117681671) internal successors, (11422), 3399 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11422 transitions. [2021-06-05 07:15:47,011 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11422 transitions. Word has length 39 [2021-06-05 07:15:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:47,011 INFO L482 AbstractCegarLoop]: Abstraction has 3400 states and 11422 transitions. [2021-06-05 07:15:47,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11422 transitions. [2021-06-05 07:15:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:47,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:47,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:47,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 07:15:47,019 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash 577612470, now seen corresponding path program 12 times [2021-06-05 07:15:47,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:47,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797012746] [2021-06-05 07:15:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:47,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:47,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797012746] [2021-06-05 07:15:47,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797012746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:47,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:47,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:47,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297722096] [2021-06-05 07:15:47,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:47,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:47,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:47,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:47,231 INFO L87 Difference]: Start difference. First operand 3400 states and 11422 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:48,553 INFO L93 Difference]: Finished difference Result 3963 states and 13072 transitions. [2021-06-05 07:15:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:15:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:48,561 INFO L225 Difference]: With dead ends: 3963 [2021-06-05 07:15:48,561 INFO L226 Difference]: Without dead ends: 3899 [2021-06-05 07:15:48,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 883.6ms TimeCoverageRelationStatistics Valid=242, Invalid=2208, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:15:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-06-05 07:15:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3450. [2021-06-05 07:15:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.358944621629458) internal successors, (11585), 3449 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11585 transitions. [2021-06-05 07:15:48,671 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11585 transitions. Word has length 39 [2021-06-05 07:15:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:48,671 INFO L482 AbstractCegarLoop]: Abstraction has 3450 states and 11585 transitions. [2021-06-05 07:15:48,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11585 transitions. [2021-06-05 07:15:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:48,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:48,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:48,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 07:15:48,683 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2116487992, now seen corresponding path program 13 times [2021-06-05 07:15:48,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:48,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249590214] [2021-06-05 07:15:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:48,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:48,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249590214] [2021-06-05 07:15:48,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249590214] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:48,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:48,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:48,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57194644] [2021-06-05 07:15:48,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:48,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:48,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:48,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:48,917 INFO L87 Difference]: Start difference. First operand 3450 states and 11585 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:49,880 INFO L93 Difference]: Finished difference Result 3857 states and 12851 transitions. [2021-06-05 07:15:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:15:49,881 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:49,887 INFO L225 Difference]: With dead ends: 3857 [2021-06-05 07:15:49,887 INFO L226 Difference]: Without dead ends: 3790 [2021-06-05 07:15:49,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 532.8ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:15:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-06-05 07:15:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3490. [2021-06-05 07:15:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.351390083118372) internal successors, (11693), 3489 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 11693 transitions. [2021-06-05 07:15:49,954 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 11693 transitions. Word has length 39 [2021-06-05 07:15:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:49,954 INFO L482 AbstractCegarLoop]: Abstraction has 3490 states and 11693 transitions. [2021-06-05 07:15:49,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 11693 transitions. [2021-06-05 07:15:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:49,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:49,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:49,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 07:15:49,962 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:49,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1985893144, now seen corresponding path program 14 times [2021-06-05 07:15:49,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:49,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856340339] [2021-06-05 07:15:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:50,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:50,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856340339] [2021-06-05 07:15:50,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856340339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:50,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:50,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:50,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562587871] [2021-06-05 07:15:50,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:50,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:50,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:50,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:50,182 INFO L87 Difference]: Start difference. First operand 3490 states and 11693 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:51,227 INFO L93 Difference]: Finished difference Result 3845 states and 12811 transitions. [2021-06-05 07:15:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:15:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:51,233 INFO L225 Difference]: With dead ends: 3845 [2021-06-05 07:15:51,234 INFO L226 Difference]: Without dead ends: 3782 [2021-06-05 07:15:51,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 616.6ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:15:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-05 07:15:51,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3482. [2021-06-05 07:15:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.3521976443550705) internal successors, (11669), 3481 states have internal predecessors, (11669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 11669 transitions. [2021-06-05 07:15:51,299 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 11669 transitions. Word has length 39 [2021-06-05 07:15:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:51,299 INFO L482 AbstractCegarLoop]: Abstraction has 3482 states and 11669 transitions. [2021-06-05 07:15:51,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 11669 transitions. [2021-06-05 07:15:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:51,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:51,307 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:51,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 07:15:51,307 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1455992696, now seen corresponding path program 15 times [2021-06-05 07:15:51,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:51,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057850537] [2021-06-05 07:15:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:51,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:51,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057850537] [2021-06-05 07:15:51,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057850537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:51,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:51,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:51,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044914204] [2021-06-05 07:15:51,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:51,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:51,537 INFO L87 Difference]: Start difference. First operand 3482 states and 11669 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:52,599 INFO L93 Difference]: Finished difference Result 3869 states and 12871 transitions. [2021-06-05 07:15:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:15:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:52,606 INFO L225 Difference]: With dead ends: 3869 [2021-06-05 07:15:52,606 INFO L226 Difference]: Without dead ends: 3746 [2021-06-05 07:15:52,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 618.9ms TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:15:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-06-05 07:15:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3450. [2021-06-05 07:15:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.3543055958248766) internal successors, (11569), 3449 states have internal predecessors, (11569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11569 transitions. [2021-06-05 07:15:52,683 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11569 transitions. Word has length 39 [2021-06-05 07:15:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:52,683 INFO L482 AbstractCegarLoop]: Abstraction has 3450 states and 11569 transitions. [2021-06-05 07:15:52,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11569 transitions. [2021-06-05 07:15:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:52,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:52,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:52,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 07:15:52,691 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash 737581526, now seen corresponding path program 16 times [2021-06-05 07:15:52,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:52,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168776208] [2021-06-05 07:15:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:52,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:52,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168776208] [2021-06-05 07:15:52,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168776208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:52,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:52,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:52,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246390266] [2021-06-05 07:15:52,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:52,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:52,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:52,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:52,903 INFO L87 Difference]: Start difference. First operand 3450 states and 11569 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:54,751 INFO L93 Difference]: Finished difference Result 5674 states and 19244 transitions. [2021-06-05 07:15:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:15:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:54,762 INFO L225 Difference]: With dead ends: 5674 [2021-06-05 07:15:54,762 INFO L226 Difference]: Without dead ends: 5631 [2021-06-05 07:15:54,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1028.3ms TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:15:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-05 07:15:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3544. [2021-06-05 07:15:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3543 states have (on average 3.3519616144510302) internal successors, (11876), 3543 states have internal predecessors, (11876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 11876 transitions. [2021-06-05 07:15:54,857 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 11876 transitions. Word has length 39 [2021-06-05 07:15:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:54,857 INFO L482 AbstractCegarLoop]: Abstraction has 3544 states and 11876 transitions. [2021-06-05 07:15:54,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 11876 transitions. [2021-06-05 07:15:54,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:54,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:54,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:54,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 07:15:54,866 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:54,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1043016776, now seen corresponding path program 17 times [2021-06-05 07:15:54,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:54,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368760043] [2021-06-05 07:15:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:55,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:55,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368760043] [2021-06-05 07:15:55,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368760043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:55,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:55,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:55,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198135760] [2021-06-05 07:15:55,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:55,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:55,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:55,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:55,074 INFO L87 Difference]: Start difference. First operand 3544 states and 11876 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:57,217 INFO L93 Difference]: Finished difference Result 6535 states and 22174 transitions. [2021-06-05 07:15:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 07:15:57,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:57,234 INFO L225 Difference]: With dead ends: 6535 [2021-06-05 07:15:57,234 INFO L226 Difference]: Without dead ends: 6483 [2021-06-05 07:15:57,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1170.8ms TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:15:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2021-06-05 07:15:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 3538. [2021-06-05 07:15:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.35340684195646) internal successors, (11861), 3537 states have internal predecessors, (11861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11861 transitions. [2021-06-05 07:15:57,309 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11861 transitions. Word has length 39 [2021-06-05 07:15:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:57,310 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11861 transitions. [2021-06-05 07:15:57,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11861 transitions. [2021-06-05 07:15:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:57,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:57,316 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:57,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 07:15:57,317 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1656065096, now seen corresponding path program 18 times [2021-06-05 07:15:57,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:57,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627531587] [2021-06-05 07:15:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:57,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:57,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627531587] [2021-06-05 07:15:57,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627531587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:57,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:57,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:57,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154173564] [2021-06-05 07:15:57,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:57,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:57,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:57,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:57,560 INFO L87 Difference]: Start difference. First operand 3538 states and 11861 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:15:59,205 INFO L93 Difference]: Finished difference Result 5563 states and 18698 transitions. [2021-06-05 07:15:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:15:59,205 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:15:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:15:59,214 INFO L225 Difference]: With dead ends: 5563 [2021-06-05 07:15:59,214 INFO L226 Difference]: Without dead ends: 5508 [2021-06-05 07:15:59,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 933.0ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:15:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-05 07:15:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3622. [2021-06-05 07:15:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.352388842861088) internal successors, (12139), 3621 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12139 transitions. [2021-06-05 07:15:59,279 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12139 transitions. Word has length 39 [2021-06-05 07:15:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:15:59,279 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12139 transitions. [2021-06-05 07:15:59,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:15:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12139 transitions. [2021-06-05 07:15:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:15:59,285 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:15:59,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:15:59,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 07:15:59,286 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:15:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:15:59,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1466249978, now seen corresponding path program 19 times [2021-06-05 07:15:59,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:15:59,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054025590] [2021-06-05 07:15:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:15:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:15:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:15:59,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:15:59,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054025590] [2021-06-05 07:15:59,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054025590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:15:59,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:15:59,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:15:59,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034695059] [2021-06-05 07:15:59,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:15:59,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:15:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:15:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:15:59,489 INFO L87 Difference]: Start difference. First operand 3622 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:01,282 INFO L93 Difference]: Finished difference Result 6424 states and 21632 transitions. [2021-06-05 07:16:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:16:01,282 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:01,292 INFO L225 Difference]: With dead ends: 6424 [2021-06-05 07:16:01,292 INFO L226 Difference]: Without dead ends: 6364 [2021-06-05 07:16:01,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 940.2ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:16:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-06-05 07:16:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3620. [2021-06-05 07:16:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3528599060513953) internal successors, (12134), 3619 states have internal predecessors, (12134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12134 transitions. [2021-06-05 07:16:01,363 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12134 transitions. Word has length 39 [2021-06-05 07:16:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:01,363 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12134 transitions. [2021-06-05 07:16:01,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12134 transitions. [2021-06-05 07:16:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:01,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:01,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:01,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 07:16:01,370 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash 951313716, now seen corresponding path program 20 times [2021-06-05 07:16:01,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:01,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065308522] [2021-06-05 07:16:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:01,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:01,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065308522] [2021-06-05 07:16:01,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065308522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:01,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:01,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:01,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157399501] [2021-06-05 07:16:01,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:01,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:01,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:01,574 INFO L87 Difference]: Start difference. First operand 3620 states and 12134 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:02,886 INFO L93 Difference]: Finished difference Result 5484 states and 18506 transitions. [2021-06-05 07:16:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:16:02,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:02,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:02,896 INFO L225 Difference]: With dead ends: 5484 [2021-06-05 07:16:02,896 INFO L226 Difference]: Without dead ends: 5393 [2021-06-05 07:16:02,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 682.4ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:16:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-06-05 07:16:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 3620. [2021-06-05 07:16:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3512019894998617) internal successors, (12128), 3619 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12128 transitions. [2021-06-05 07:16:02,961 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12128 transitions. Word has length 39 [2021-06-05 07:16:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:02,961 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12128 transitions. [2021-06-05 07:16:02,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12128 transitions. [2021-06-05 07:16:02,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:02,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:02,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:02,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 07:16:02,966 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:02,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:02,966 INFO L82 PathProgramCache]: Analyzing trace with hash -551168490, now seen corresponding path program 21 times [2021-06-05 07:16:02,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:02,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487505871] [2021-06-05 07:16:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:03,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:03,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487505871] [2021-06-05 07:16:03,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487505871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:03,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:03,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:03,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245357835] [2021-06-05 07:16:03,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:03,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:03,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:03,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:03,185 INFO L87 Difference]: Start difference. First operand 3620 states and 12128 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:04,771 INFO L93 Difference]: Finished difference Result 6297 states and 21308 transitions. [2021-06-05 07:16:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:16:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:04,781 INFO L225 Difference]: With dead ends: 6297 [2021-06-05 07:16:04,781 INFO L226 Difference]: Without dead ends: 6181 [2021-06-05 07:16:04,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 820.7ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:16:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-06-05 07:16:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 3598. [2021-06-05 07:16:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.3525159855435085) internal successors, (12059), 3597 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12059 transitions. [2021-06-05 07:16:04,840 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12059 transitions. Word has length 39 [2021-06-05 07:16:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:04,840 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12059 transitions. [2021-06-05 07:16:04,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12059 transitions. [2021-06-05 07:16:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:04,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:04,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:04,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 07:16:04,844 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:04,845 INFO L82 PathProgramCache]: Analyzing trace with hash -17245494, now seen corresponding path program 22 times [2021-06-05 07:16:04,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:04,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573910476] [2021-06-05 07:16:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:05,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:05,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573910476] [2021-06-05 07:16:05,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573910476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:05,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:05,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:16:05,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620665615] [2021-06-05 07:16:05,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:16:05,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:05,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:16:05,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:16:05,024 INFO L87 Difference]: Start difference. First operand 3598 states and 12059 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:05,869 INFO L93 Difference]: Finished difference Result 3859 states and 12840 transitions. [2021-06-05 07:16:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:16:05,869 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:05,876 INFO L225 Difference]: With dead ends: 3859 [2021-06-05 07:16:05,876 INFO L226 Difference]: Without dead ends: 3792 [2021-06-05 07:16:05,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 558.7ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:16:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-06-05 07:16:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3610. [2021-06-05 07:16:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3485730119146577) internal successors, (12085), 3609 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12085 transitions. [2021-06-05 07:16:05,950 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12085 transitions. Word has length 39 [2021-06-05 07:16:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:05,951 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12085 transitions. [2021-06-05 07:16:05,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:05,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12085 transitions. [2021-06-05 07:16:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:05,956 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:05,956 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:05,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 07:16:05,956 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:05,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1736861464, now seen corresponding path program 23 times [2021-06-05 07:16:05,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:05,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218789180] [2021-06-05 07:16:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:06,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:06,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218789180] [2021-06-05 07:16:06,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218789180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:06,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:06,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:16:06,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995018945] [2021-06-05 07:16:06,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:16:06,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:06,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:16:06,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:16:06,161 INFO L87 Difference]: Start difference. First operand 3610 states and 12085 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:07,267 INFO L93 Difference]: Finished difference Result 3857 states and 12839 transitions. [2021-06-05 07:16:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:16:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:07,274 INFO L225 Difference]: With dead ends: 3857 [2021-06-05 07:16:07,274 INFO L226 Difference]: Without dead ends: 3796 [2021-06-05 07:16:07,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 760.9ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:16:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2021-06-05 07:16:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3598. [2021-06-05 07:16:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-06-05 07:16:07,324 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-06-05 07:16:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:07,324 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-06-05 07:16:07,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-06-05 07:16:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:07,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:07,328 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:07,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 07:16:07,328 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:07,329 INFO L82 PathProgramCache]: Analyzing trace with hash 368691914, now seen corresponding path program 24 times [2021-06-05 07:16:07,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:07,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792044539] [2021-06-05 07:16:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:07,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:07,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792044539] [2021-06-05 07:16:07,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792044539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:07,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:07,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:16:07,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707253382] [2021-06-05 07:16:07,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:16:07,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:07,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:16:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:16:07,521 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:08,693 INFO L93 Difference]: Finished difference Result 3911 states and 12982 transitions. [2021-06-05 07:16:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:16:08,693 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:08,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:08,699 INFO L225 Difference]: With dead ends: 3911 [2021-06-05 07:16:08,699 INFO L226 Difference]: Without dead ends: 3781 [2021-06-05 07:16:08,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 753.6ms TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:16:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2021-06-05 07:16:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3574. [2021-06-05 07:16:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.3515253288553035) internal successors, (11975), 3573 states have internal predecessors, (11975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11975 transitions. [2021-06-05 07:16:08,746 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11975 transitions. Word has length 39 [2021-06-05 07:16:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:08,747 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11975 transitions. [2021-06-05 07:16:08,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11975 transitions. [2021-06-05 07:16:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:08,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:08,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:08,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 07:16:08,753 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:08,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2088323530, now seen corresponding path program 25 times [2021-06-05 07:16:08,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:08,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449514620] [2021-06-05 07:16:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:08,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:08,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449514620] [2021-06-05 07:16:08,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449514620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:08,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:08,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:08,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940084240] [2021-06-05 07:16:08,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:08,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:08,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:08,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:08,948 INFO L87 Difference]: Start difference. First operand 3574 states and 11975 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:09,919 INFO L93 Difference]: Finished difference Result 3867 states and 12844 transitions. [2021-06-05 07:16:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:16:09,919 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:09,925 INFO L225 Difference]: With dead ends: 3867 [2021-06-05 07:16:09,925 INFO L226 Difference]: Without dead ends: 3800 [2021-06-05 07:16:09,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 656.6ms TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:16:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-06-05 07:16:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3574. [2021-06-05 07:16:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.348166806605094) internal successors, (11963), 3573 states have internal predecessors, (11963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11963 transitions. [2021-06-05 07:16:09,975 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11963 transitions. Word has length 39 [2021-06-05 07:16:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:09,975 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11963 transitions. [2021-06-05 07:16:09,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11963 transitions. [2021-06-05 07:16:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:09,980 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:09,980 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:09,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 07:16:09,980 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 487027796, now seen corresponding path program 26 times [2021-06-05 07:16:09,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:09,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986706807] [2021-06-05 07:16:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:10,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:10,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986706807] [2021-06-05 07:16:10,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986706807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:10,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:10,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:10,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460603425] [2021-06-05 07:16:10,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:10,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:10,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:10,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:10,189 INFO L87 Difference]: Start difference. First operand 3574 states and 11963 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:11,504 INFO L93 Difference]: Finished difference Result 3904 states and 12922 transitions. [2021-06-05 07:16:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:16:11,504 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:11,512 INFO L225 Difference]: With dead ends: 3904 [2021-06-05 07:16:11,512 INFO L226 Difference]: Without dead ends: 3843 [2021-06-05 07:16:11,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 871.5ms TimeCoverageRelationStatistics Valid=249, Invalid=2201, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:16:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2021-06-05 07:16:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3562. [2021-06-05 07:16:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-06-05 07:16:11,567 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-06-05 07:16:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:11,568 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-06-05 07:16:11,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-06-05 07:16:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:11,572 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:11,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:11,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 07:16:11,573 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:11,573 INFO L82 PathProgramCache]: Analyzing trace with hash -673136106, now seen corresponding path program 27 times [2021-06-05 07:16:11,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:11,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230221656] [2021-06-05 07:16:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:11,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:11,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230221656] [2021-06-05 07:16:11,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230221656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:11,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:11,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:11,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740272524] [2021-06-05 07:16:11,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:11,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:11,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:11,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:11,807 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:13,016 INFO L93 Difference]: Finished difference Result 3819 states and 12706 transitions. [2021-06-05 07:16:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:16:13,016 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:13,023 INFO L225 Difference]: With dead ends: 3819 [2021-06-05 07:16:13,023 INFO L226 Difference]: Without dead ends: 3752 [2021-06-05 07:16:13,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 751.0ms TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:16:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-06-05 07:16:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3570. [2021-06-05 07:16:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 3.347996637713645) internal successors, (11949), 3569 states have internal predecessors, (11949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 11949 transitions. [2021-06-05 07:16:13,078 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 11949 transitions. Word has length 39 [2021-06-05 07:16:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:13,078 INFO L482 AbstractCegarLoop]: Abstraction has 3570 states and 11949 transitions. [2021-06-05 07:16:13,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 11949 transitions. [2021-06-05 07:16:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:13,084 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:13,084 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:13,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 07:16:13,085 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:13,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash -803730954, now seen corresponding path program 28 times [2021-06-05 07:16:13,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:13,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937183767] [2021-06-05 07:16:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:13,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:13,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937183767] [2021-06-05 07:16:13,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937183767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:13,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:13,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:13,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572549003] [2021-06-05 07:16:13,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:13,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:13,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:13,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:13,319 INFO L87 Difference]: Start difference. First operand 3570 states and 11949 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:14,301 INFO L93 Difference]: Finished difference Result 3807 states and 12666 transitions. [2021-06-05 07:16:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:16:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:14,307 INFO L225 Difference]: With dead ends: 3807 [2021-06-05 07:16:14,308 INFO L226 Difference]: Without dead ends: 3744 [2021-06-05 07:16:14,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 669.8ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:16:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-06-05 07:16:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3562. [2021-06-05 07:16:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.349901713001966) internal successors, (11929), 3561 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11929 transitions. [2021-06-05 07:16:14,357 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11929 transitions. Word has length 39 [2021-06-05 07:16:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:14,357 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11929 transitions. [2021-06-05 07:16:14,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11929 transitions. [2021-06-05 07:16:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:14,363 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:14,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:14,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 07:16:14,363 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash -939409546, now seen corresponding path program 29 times [2021-06-05 07:16:14,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:14,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652556067] [2021-06-05 07:16:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:14,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:14,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652556067] [2021-06-05 07:16:14,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652556067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:14,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:14,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:14,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610416424] [2021-06-05 07:16:14,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:14,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:14,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:14,553 INFO L87 Difference]: Start difference. First operand 3562 states and 11929 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:15,828 INFO L93 Difference]: Finished difference Result 3914 states and 12924 transitions. [2021-06-05 07:16:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:16:15,828 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:15,834 INFO L225 Difference]: With dead ends: 3914 [2021-06-05 07:16:15,834 INFO L226 Difference]: Without dead ends: 3865 [2021-06-05 07:16:15,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 858.2ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:16:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-05 07:16:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3556. [2021-06-05 07:16:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.351336146272855) internal successors, (11914), 3555 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11914 transitions. [2021-06-05 07:16:15,906 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11914 transitions. Word has length 39 [2021-06-05 07:16:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:15,906 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11914 transitions. [2021-06-05 07:16:15,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11914 transitions. [2021-06-05 07:16:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:15,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:15,910 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:15,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 07:16:15,911 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:15,911 INFO L82 PathProgramCache]: Analyzing trace with hash -20925976, now seen corresponding path program 30 times [2021-06-05 07:16:15,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:15,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672573554] [2021-06-05 07:16:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:16,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:16,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672573554] [2021-06-05 07:16:16,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672573554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:16,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:16,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:16,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893628973] [2021-06-05 07:16:16,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:16,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:16,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:16,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:16,118 INFO L87 Difference]: Start difference. First operand 3556 states and 11914 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:17,162 INFO L93 Difference]: Finished difference Result 3841 states and 12736 transitions. [2021-06-05 07:16:17,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:16:17,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:17,168 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 07:16:17,168 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 07:16:17,169 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 706.9ms TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:16:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 07:16:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3556. [2021-06-05 07:16:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.350773558368495) internal successors, (11912), 3555 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11912 transitions. [2021-06-05 07:16:17,220 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11912 transitions. Word has length 39 [2021-06-05 07:16:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:17,220 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11912 transitions. [2021-06-05 07:16:17,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11912 transitions. [2021-06-05 07:16:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:17,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:17,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:17,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 07:16:17,226 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:17,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1151726246, now seen corresponding path program 31 times [2021-06-05 07:16:17,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:17,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610552041] [2021-06-05 07:16:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:17,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:17,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610552041] [2021-06-05 07:16:17,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610552041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:17,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:17,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:17,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064180423] [2021-06-05 07:16:17,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:17,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:17,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:17,432 INFO L87 Difference]: Start difference. First operand 3556 states and 11912 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:18,420 INFO L93 Difference]: Finished difference Result 3784 states and 12604 transitions. [2021-06-05 07:16:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:16:18,420 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:18,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:18,426 INFO L225 Difference]: With dead ends: 3784 [2021-06-05 07:16:18,427 INFO L226 Difference]: Without dead ends: 3728 [2021-06-05 07:16:18,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 664.4ms TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:16:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-05 07:16:18,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3546. [2021-06-05 07:16:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 3.3543018335684063) internal successors, (11891), 3545 states have internal predecessors, (11891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 11891 transitions. [2021-06-05 07:16:18,487 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 11891 transitions. Word has length 39 [2021-06-05 07:16:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:18,487 INFO L482 AbstractCegarLoop]: Abstraction has 3546 states and 11891 transitions. [2021-06-05 07:16:18,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 11891 transitions. [2021-06-05 07:16:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:18,492 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:18,492 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:18,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 07:16:18,492 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash -901192728, now seen corresponding path program 32 times [2021-06-05 07:16:18,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:18,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726748219] [2021-06-05 07:16:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:18,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:18,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726748219] [2021-06-05 07:16:18,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726748219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:18,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:18,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:18,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229850520] [2021-06-05 07:16:18,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:18,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:18,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:18,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:18,698 INFO L87 Difference]: Start difference. First operand 3546 states and 11891 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:20,152 INFO L93 Difference]: Finished difference Result 3995 states and 13156 transitions. [2021-06-05 07:16:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:16:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:20,158 INFO L225 Difference]: With dead ends: 3995 [2021-06-05 07:16:20,159 INFO L226 Difference]: Without dead ends: 3858 [2021-06-05 07:16:20,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 953.6ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:16:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-06-05 07:16:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3550. [2021-06-05 07:16:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-06-05 07:16:20,213 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-06-05 07:16:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:20,213 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-06-05 07:16:20,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-06-05 07:16:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:20,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:20,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:20,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 07:16:20,218 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1898883668, now seen corresponding path program 33 times [2021-06-05 07:16:20,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:20,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287984855] [2021-06-05 07:16:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:20,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:20,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287984855] [2021-06-05 07:16:20,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287984855] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:20,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:20,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:20,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863917962] [2021-06-05 07:16:20,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:20,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:20,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:20,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:20,413 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:21,815 INFO L93 Difference]: Finished difference Result 4033 states and 13226 transitions. [2021-06-05 07:16:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:16:21,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:21,821 INFO L225 Difference]: With dead ends: 4033 [2021-06-05 07:16:21,821 INFO L226 Difference]: Without dead ends: 3969 [2021-06-05 07:16:21,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 918.2ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:16:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-06-05 07:16:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3550. [2021-06-05 07:16:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-06-05 07:16:21,873 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-06-05 07:16:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:21,873 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-06-05 07:16:21,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-06-05 07:16:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:21,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:21,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:21,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 07:16:21,878 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1477600058, now seen corresponding path program 34 times [2021-06-05 07:16:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:21,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538856445] [2021-06-05 07:16:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:22,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:22,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538856445] [2021-06-05 07:16:22,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538856445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:22,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:22,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:22,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990763142] [2021-06-05 07:16:22,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:22,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:22,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:22,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:22,103 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:23,232 INFO L93 Difference]: Finished difference Result 3938 states and 12974 transitions. [2021-06-05 07:16:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:16:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:23,239 INFO L225 Difference]: With dead ends: 3938 [2021-06-05 07:16:23,239 INFO L226 Difference]: Without dead ends: 3883 [2021-06-05 07:16:23,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 717.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:16:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-06-05 07:16:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3552. [2021-06-05 07:16:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3551 states have (on average 3.3522951281329205) internal successors, (11904), 3551 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 11904 transitions. [2021-06-05 07:16:23,304 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 11904 transitions. Word has length 39 [2021-06-05 07:16:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:23,304 INFO L482 AbstractCegarLoop]: Abstraction has 3552 states and 11904 transitions. [2021-06-05 07:16:23,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 11904 transitions. [2021-06-05 07:16:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:23,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:23,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:23,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 07:16:23,311 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash -304947836, now seen corresponding path program 35 times [2021-06-05 07:16:23,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:23,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592689991] [2021-06-05 07:16:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:23,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:23,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592689991] [2021-06-05 07:16:23,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592689991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:23,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:23,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:23,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366251379] [2021-06-05 07:16:23,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:23,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:23,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:23,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:23,543 INFO L87 Difference]: Start difference. First operand 3552 states and 11904 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:24,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:24,611 INFO L93 Difference]: Finished difference Result 3908 states and 12913 transitions. [2021-06-05 07:16:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:16:24,625 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:24,633 INFO L225 Difference]: With dead ends: 3908 [2021-06-05 07:16:24,633 INFO L226 Difference]: Without dead ends: 3848 [2021-06-05 07:16:24,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 743.8ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:16:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-06-05 07:16:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3550. [2021-06-05 07:16:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-06-05 07:16:24,703 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-06-05 07:16:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:24,703 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-06-05 07:16:24,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-06-05 07:16:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:24,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:24,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:24,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 07:16:24,708 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:24,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1910452918, now seen corresponding path program 36 times [2021-06-05 07:16:24,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:24,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950908977] [2021-06-05 07:16:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:24,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:24,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950908977] [2021-06-05 07:16:24,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950908977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:24,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:24,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:16:24,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525263382] [2021-06-05 07:16:24,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:16:24,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:24,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:16:24,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:16:24,905 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:25,788 INFO L93 Difference]: Finished difference Result 3819 states and 12700 transitions. [2021-06-05 07:16:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:16:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:25,795 INFO L225 Difference]: With dead ends: 3819 [2021-06-05 07:16:25,795 INFO L226 Difference]: Without dead ends: 3743 [2021-06-05 07:16:25,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 587.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:16:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-06-05 07:16:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3558. [2021-06-05 07:16:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3557 states have (on average 3.3497329210008435) internal successors, (11915), 3557 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 11915 transitions. [2021-06-05 07:16:25,842 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 11915 transitions. Word has length 39 [2021-06-05 07:16:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:25,842 INFO L482 AbstractCegarLoop]: Abstraction has 3558 states and 11915 transitions. [2021-06-05 07:16:25,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 11915 transitions. [2021-06-05 07:16:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:25,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:25,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:25,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 07:16:25,846 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 892399306, now seen corresponding path program 37 times [2021-06-05 07:16:25,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:25,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352241880] [2021-06-05 07:16:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:26,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:26,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352241880] [2021-06-05 07:16:26,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352241880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:26,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:26,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:26,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079780324] [2021-06-05 07:16:26,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:26,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:26,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:26,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:26,059 INFO L87 Difference]: Start difference. First operand 3558 states and 11915 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:27,077 INFO L93 Difference]: Finished difference Result 3801 states and 12646 transitions. [2021-06-05 07:16:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:16:27,077 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:27,083 INFO L225 Difference]: With dead ends: 3801 [2021-06-05 07:16:27,083 INFO L226 Difference]: Without dead ends: 3723 [2021-06-05 07:16:27,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 680.3ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:16:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-06-05 07:16:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3538. [2021-06-05 07:16:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.3551031947978514) internal successors, (11867), 3537 states have internal predecessors, (11867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-06-05 07:16:27,154 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-06-05 07:16:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:27,154 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-06-05 07:16:27,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-06-05 07:16:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:27,159 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:27,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:27,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 07:16:27,159 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1082064394, now seen corresponding path program 38 times [2021-06-05 07:16:27,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:27,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816309331] [2021-06-05 07:16:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:27,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:27,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816309331] [2021-06-05 07:16:27,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816309331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:27,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:27,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:27,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019103934] [2021-06-05 07:16:27,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:27,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:27,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:27,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:27,358 INFO L87 Difference]: Start difference. First operand 3538 states and 11867 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:28,556 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-06-05 07:16:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:16:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:28,563 INFO L225 Difference]: With dead ends: 3974 [2021-06-05 07:16:28,563 INFO L226 Difference]: Without dead ends: 3868 [2021-06-05 07:16:28,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 788.1ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:16:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-06-05 07:16:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-06-05 07:16:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-06-05 07:16:28,611 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-06-05 07:16:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:28,611 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-06-05 07:16:28,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-06-05 07:16:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:28,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:28,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:28,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 07:16:28,615 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:28,615 INFO L82 PathProgramCache]: Analyzing trace with hash -412826506, now seen corresponding path program 39 times [2021-06-05 07:16:28,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:28,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749421315] [2021-06-05 07:16:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:28,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:28,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749421315] [2021-06-05 07:16:28,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749421315] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:28,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:28,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:28,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432972004] [2021-06-05 07:16:28,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:28,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:28,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:28,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:28,808 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:30,065 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-06-05 07:16:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:16:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:30,071 INFO L225 Difference]: With dead ends: 4043 [2021-06-05 07:16:30,071 INFO L226 Difference]: Without dead ends: 3979 [2021-06-05 07:16:30,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 850.6ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:16:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-06-05 07:16:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-06-05 07:16:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-06-05 07:16:30,127 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-06-05 07:16:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:30,128 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-06-05 07:16:30,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-06-05 07:16:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:30,133 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:30,133 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:30,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 07:16:30,133 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:30,134 INFO L82 PathProgramCache]: Analyzing trace with hash 505657064, now seen corresponding path program 40 times [2021-06-05 07:16:30,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:30,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551495223] [2021-06-05 07:16:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:30,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:30,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551495223] [2021-06-05 07:16:30,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551495223] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:30,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:30,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:30,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513355060] [2021-06-05 07:16:30,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:30,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:30,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:30,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:30,349 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:31,268 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-06-05 07:16:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:16:31,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:31,275 INFO L225 Difference]: With dead ends: 3940 [2021-06-05 07:16:31,275 INFO L226 Difference]: Without dead ends: 3897 [2021-06-05 07:16:31,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 606.7ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:16:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-06-05 07:16:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-06-05 07:16:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.352627142455746) internal successors, (11932), 3559 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-06-05 07:16:31,323 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-06-05 07:16:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:31,323 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-06-05 07:16:31,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-06-05 07:16:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:31,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:31,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:31,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 07:16:31,329 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 525805798, now seen corresponding path program 41 times [2021-06-05 07:16:31,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:31,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843668428] [2021-06-05 07:16:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:31,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:31,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843668428] [2021-06-05 07:16:31,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843668428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:31,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:31,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:31,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046642448] [2021-06-05 07:16:31,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:31,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:31,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:31,527 INFO L87 Difference]: Start difference. First operand 3560 states and 11932 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:32,554 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-06-05 07:16:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:16:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:32,561 INFO L225 Difference]: With dead ends: 3897 [2021-06-05 07:16:32,561 INFO L226 Difference]: Without dead ends: 3854 [2021-06-05 07:16:32,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 677.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:16:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-06-05 07:16:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-06-05 07:16:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.353586497890295) internal successors, (11922), 3555 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-06-05 07:16:32,609 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-06-05 07:16:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:32,610 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-06-05 07:16:32,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-06-05 07:16:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:32,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:32,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:32,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 07:16:32,614 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1678309286, now seen corresponding path program 42 times [2021-06-05 07:16:32,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:32,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616547031] [2021-06-05 07:16:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:32,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:32,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616547031] [2021-06-05 07:16:32,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616547031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:32,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:32,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:32,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548527130] [2021-06-05 07:16:32,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:32,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:32,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:32,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:32,846 INFO L87 Difference]: Start difference. First operand 3556 states and 11922 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:33,856 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-06-05 07:16:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:16:33,856 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:33,863 INFO L225 Difference]: With dead ends: 3918 [2021-06-05 07:16:33,863 INFO L226 Difference]: Without dead ends: 3858 [2021-06-05 07:16:33,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 680.7ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:16:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-06-05 07:16:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-06-05 07:16:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.354066985645933) internal successors, (11917), 3553 states have internal predecessors, (11917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-06-05 07:16:33,914 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-06-05 07:16:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:33,915 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-06-05 07:16:33,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-06-05 07:16:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:33,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:33,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:33,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 07:16:33,919 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash -401257256, now seen corresponding path program 43 times [2021-06-05 07:16:33,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:33,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86008687] [2021-06-05 07:16:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:34,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:34,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86008687] [2021-06-05 07:16:34,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86008687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:34,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:34,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:16:34,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923005793] [2021-06-05 07:16:34,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:16:34,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:34,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:16:34,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:16:34,090 INFO L87 Difference]: Start difference. First operand 3554 states and 11917 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:34,898 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-06-05 07:16:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:16:34,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:34,904 INFO L225 Difference]: With dead ends: 3886 [2021-06-05 07:16:34,905 INFO L226 Difference]: Without dead ends: 3810 [2021-06-05 07:16:34,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 511.6ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:16:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-06-05 07:16:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-06-05 07:16:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-06-05 07:16:34,953 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-06-05 07:16:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:34,954 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-06-05 07:16:34,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:34,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-06-05 07:16:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:34,958 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:34,958 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:34,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 07:16:34,958 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1419310868, now seen corresponding path program 44 times [2021-06-05 07:16:34,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:34,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221129273] [2021-06-05 07:16:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:35,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:35,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221129273] [2021-06-05 07:16:35,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221129273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:35,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:35,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:35,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193038936] [2021-06-05 07:16:35,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:35,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:35,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:35,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:35,167 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:36,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:36,064 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-06-05 07:16:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:16:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:36,071 INFO L225 Difference]: With dead ends: 3868 [2021-06-05 07:16:36,071 INFO L226 Difference]: Without dead ends: 3798 [2021-06-05 07:16:36,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 583.9ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:16:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-06-05 07:16:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-06-05 07:16:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.354466046773739) internal successors, (11905), 3549 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-06-05 07:16:36,118 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-06-05 07:16:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:36,118 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-06-05 07:16:36,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-06-05 07:16:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:36,122 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:36,122 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:36,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 07:16:36,122 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:36,123 INFO L82 PathProgramCache]: Analyzing trace with hash -573127188, now seen corresponding path program 45 times [2021-06-05 07:16:36,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:36,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358178888] [2021-06-05 07:16:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:36,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:36,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358178888] [2021-06-05 07:16:36,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358178888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:36,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:36,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:36,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795134887] [2021-06-05 07:16:36,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:36,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:36,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:36,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:36,323 INFO L87 Difference]: Start difference. First operand 3550 states and 11905 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:37,973 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-06-05 07:16:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:16:37,973 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:37,983 INFO L225 Difference]: With dead ends: 5576 [2021-06-05 07:16:37,983 INFO L226 Difference]: Without dead ends: 5533 [2021-06-05 07:16:37,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 974.5ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:16:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-06-05 07:16:38,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-06-05 07:16:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3575 states have (on average 3.3532867132867135) internal successors, (11988), 3575 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-06-05 07:16:38,043 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-06-05 07:16:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:38,043 INFO L482 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-06-05 07:16:38,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-06-05 07:16:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:38,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:38,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:38,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 07:16:38,048 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1941241806, now seen corresponding path program 46 times [2021-06-05 07:16:38,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:38,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008488261] [2021-06-05 07:16:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:38,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:38,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008488261] [2021-06-05 07:16:38,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008488261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:38,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:38,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:38,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108714038] [2021-06-05 07:16:38,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:38,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:38,253 INFO L87 Difference]: Start difference. First operand 3576 states and 11988 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:40,202 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-06-05 07:16:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:16:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:40,212 INFO L225 Difference]: With dead ends: 6437 [2021-06-05 07:16:40,213 INFO L226 Difference]: Without dead ends: 6385 [2021-06-05 07:16:40,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1137.5ms TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:16:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-06-05 07:16:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-06-05 07:16:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-06-05 07:16:40,275 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-06-05 07:16:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:40,275 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-06-05 07:16:40,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-06-05 07:16:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:40,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:40,279 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:40,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 07:16:40,279 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash 345356382, now seen corresponding path program 47 times [2021-06-05 07:16:40,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:40,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628696237] [2021-06-05 07:16:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:40,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:40,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628696237] [2021-06-05 07:16:40,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628696237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:40,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:40,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:40,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768155996] [2021-06-05 07:16:40,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:40,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:40,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:40,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:40,503 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:42,031 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-06-05 07:16:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:16:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:42,039 INFO L225 Difference]: With dead ends: 5393 [2021-06-05 07:16:42,040 INFO L226 Difference]: Without dead ends: 5338 [2021-06-05 07:16:42,040 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 818.9ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:16:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-06-05 07:16:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-06-05 07:16:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3546495392348508) internal successors, (12013), 3581 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-06-05 07:16:42,097 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-06-05 07:16:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:42,097 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-06-05 07:16:42,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-06-05 07:16:42,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:42,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:42,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:42,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 07:16:42,102 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:42,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:42,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1518008604, now seen corresponding path program 48 times [2021-06-05 07:16:42,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:42,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32741939] [2021-06-05 07:16:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:42,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:42,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32741939] [2021-06-05 07:16:42,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32741939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:42,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:42,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:42,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983425646] [2021-06-05 07:16:42,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:42,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:42,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:42,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:42,288 INFO L87 Difference]: Start difference. First operand 3582 states and 12013 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:43,934 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-06-05 07:16:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:16:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:43,945 INFO L225 Difference]: With dead ends: 6254 [2021-06-05 07:16:43,945 INFO L226 Difference]: Without dead ends: 6194 [2021-06-05 07:16:43,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 917.9ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:16:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-06-05 07:16:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-06-05 07:16:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.355127130483375) internal successors, (12008), 3579 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-06-05 07:16:44,006 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-06-05 07:16:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:44,006 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-06-05 07:16:44,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-06-05 07:16:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:44,010 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:44,010 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:44,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 07:16:44,010 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash -359394998, now seen corresponding path program 49 times [2021-06-05 07:16:44,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:44,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574188333] [2021-06-05 07:16:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:44,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:44,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574188333] [2021-06-05 07:16:44,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574188333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:44,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:44,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:44,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869710127] [2021-06-05 07:16:44,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:44,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:44,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:44,189 INFO L87 Difference]: Start difference. First operand 3580 states and 12008 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:45,359 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-06-05 07:16:45,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:16:45,359 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:45,368 INFO L225 Difference]: With dead ends: 5284 [2021-06-05 07:16:45,368 INFO L226 Difference]: Without dead ends: 5193 [2021-06-05 07:16:45,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 615.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:16:45,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-06-05 07:16:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-06-05 07:16:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.353450684548757) internal successors, (12002), 3579 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-06-05 07:16:45,424 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-06-05 07:16:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:45,424 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-06-05 07:16:45,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-06-05 07:16:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:45,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:45,428 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:45,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 07:16:45,428 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1861877204, now seen corresponding path program 50 times [2021-06-05 07:16:45,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:45,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027919356] [2021-06-05 07:16:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:45,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:45,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027919356] [2021-06-05 07:16:45,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027919356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:45,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:45,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:45,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678843624] [2021-06-05 07:16:45,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:45,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:45,620 INFO L87 Difference]: Start difference. First operand 3580 states and 12002 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:47,087 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-06-05 07:16:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:16:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:47,097 INFO L225 Difference]: With dead ends: 6116 [2021-06-05 07:16:47,097 INFO L226 Difference]: Without dead ends: 6016 [2021-06-05 07:16:47,098 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 792.7ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:16:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-06-05 07:16:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-06-05 07:16:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.352085082563672) internal successors, (11977), 3573 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-06-05 07:16:47,158 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-06-05 07:16:47,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:47,159 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-06-05 07:16:47,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:47,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-06-05 07:16:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:47,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:47,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:47,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 07:16:47,163 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2098502200, now seen corresponding path program 51 times [2021-06-05 07:16:47,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:47,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502448060] [2021-06-05 07:16:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:47,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:47,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502448060] [2021-06-05 07:16:47,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502448060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:47,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:47,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:16:47,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277637158] [2021-06-05 07:16:47,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:16:47,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:47,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:16:47,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:16:47,394 INFO L87 Difference]: Start difference. First operand 3574 states and 11977 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:48,265 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-06-05 07:16:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:16:48,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:48,272 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 07:16:48,273 INFO L226 Difference]: Without dead ends: 3765 [2021-06-05 07:16:48,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 539.5ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:16:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-06-05 07:16:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-06-05 07:16:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3467406380027738) internal successors, (12065), 3605 states have internal predecessors, (12065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-06-05 07:16:48,325 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-06-05 07:16:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:48,325 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-06-05 07:16:48,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-06-05 07:16:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:48,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:48,330 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:48,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 07:16:48,331 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:48,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1178411484, now seen corresponding path program 52 times [2021-06-05 07:16:48,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:48,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243168021] [2021-06-05 07:16:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:48,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:48,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243168021] [2021-06-05 07:16:48,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243168021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:48,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:48,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:48,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36360169] [2021-06-05 07:16:48,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:48,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:48,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:48,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:48,528 INFO L87 Difference]: Start difference. First operand 3606 states and 12065 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:49,370 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-06-05 07:16:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:16:49,370 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:49,377 INFO L225 Difference]: With dead ends: 3823 [2021-06-05 07:16:49,377 INFO L226 Difference]: Without dead ends: 3757 [2021-06-05 07:16:49,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 552.1ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:16:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-06-05 07:16:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-06-05 07:16:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.347511815401724) internal successors, (12041), 3597 states have internal predecessors, (12041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-06-05 07:16:49,424 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-06-05 07:16:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:49,424 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-06-05 07:16:49,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-06-05 07:16:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:49,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:49,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:49,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 07:16:49,429 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:49,429 INFO L82 PathProgramCache]: Analyzing trace with hash 896145830, now seen corresponding path program 53 times [2021-06-05 07:16:49,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:49,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150961125] [2021-06-05 07:16:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:49,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:49,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150961125] [2021-06-05 07:16:49,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150961125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:49,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:49,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:16:49,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178718746] [2021-06-05 07:16:49,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:16:49,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:49,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:16:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:16:49,619 INFO L87 Difference]: Start difference. First operand 3598 states and 12041 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:50,466 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-06-05 07:16:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:16:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:50,472 INFO L225 Difference]: With dead ends: 3832 [2021-06-05 07:16:50,472 INFO L226 Difference]: Without dead ends: 3670 [2021-06-05 07:16:50,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 553.1ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:16:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-05 07:16:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-06-05 07:16:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 3.3587418532162086) internal successors, (11853), 3529 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-06-05 07:16:50,532 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-06-05 07:16:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:50,532 INFO L482 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-06-05 07:16:50,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-06-05 07:16:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:50,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:50,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:50,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 07:16:50,536 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1440335206, now seen corresponding path program 54 times [2021-06-05 07:16:50,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:50,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501628333] [2021-06-05 07:16:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:50,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:50,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501628333] [2021-06-05 07:16:50,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501628333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:50,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:50,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:16:50,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160169385] [2021-06-05 07:16:50,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:16:50,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:16:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:16:50,746 INFO L87 Difference]: Start difference. First operand 3530 states and 11853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:51,847 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-06-05 07:16:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:16:51,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:51,854 INFO L225 Difference]: With dead ends: 3963 [2021-06-05 07:16:51,854 INFO L226 Difference]: Without dead ends: 3896 [2021-06-05 07:16:51,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 728.0ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:16:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-05 07:16:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-06-05 07:16:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 3.3545582047685834) internal successors, (11959), 3565 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-06-05 07:16:51,903 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-06-05 07:16:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:51,903 INFO L482 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-06-05 07:16:51,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-06-05 07:16:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:51,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:51,908 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:51,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 07:16:51,908 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:51,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1135016120, now seen corresponding path program 55 times [2021-06-05 07:16:51,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:51,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048188180] [2021-06-05 07:16:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:52,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:52,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048188180] [2021-06-05 07:16:52,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048188180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:52,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:52,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:16:52,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47071528] [2021-06-05 07:16:52,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:16:52,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:52,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:16:52,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:16:52,165 INFO L87 Difference]: Start difference. First operand 3566 states and 11959 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:53,629 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-06-05 07:16:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:16:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:53,636 INFO L225 Difference]: With dead ends: 4048 [2021-06-05 07:16:53,636 INFO L226 Difference]: Without dead ends: 4005 [2021-06-05 07:16:53,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1016.4ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:16:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-06-05 07:16:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-06-05 07:16:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 3.352562307476897) internal successors, (11972), 3571 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-06-05 07:16:53,695 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-06-05 07:16:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:53,695 INFO L482 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-06-05 07:16:53,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-06-05 07:16:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:53,701 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:53,701 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:53,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 07:16:53,701 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash -645582182, now seen corresponding path program 56 times [2021-06-05 07:16:53,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:53,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614703904] [2021-06-05 07:16:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:53,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:53,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614703904] [2021-06-05 07:16:53,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614703904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:53,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:53,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:16:53,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088057944] [2021-06-05 07:16:53,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:16:53,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:16:53,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:16:53,907 INFO L87 Difference]: Start difference. First operand 3572 states and 11972 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:55,296 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-06-05 07:16:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:16:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:55,303 INFO L225 Difference]: With dead ends: 4003 [2021-06-05 07:16:55,303 INFO L226 Difference]: Without dead ends: 3939 [2021-06-05 07:16:55,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 919.3ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:16:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-06-05 07:16:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-06-05 07:16:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3574444131719674) internal successors, (11929), 3553 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-06-05 07:16:55,354 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-06-05 07:16:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:55,354 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-06-05 07:16:55,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-06-05 07:16:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:55,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:55,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:55,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 07:16:55,359 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:55,359 INFO L82 PathProgramCache]: Analyzing trace with hash -25147782, now seen corresponding path program 57 times [2021-06-05 07:16:55,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:55,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662899692] [2021-06-05 07:16:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:55,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:55,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662899692] [2021-06-05 07:16:55,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662899692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:55,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:55,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:16:55,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142902] [2021-06-05 07:16:55,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:16:55,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:55,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:16:55,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:16:55,561 INFO L87 Difference]: Start difference. First operand 3554 states and 11929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:56,688 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-06-05 07:16:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:16:56,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:56,695 INFO L225 Difference]: With dead ends: 3963 [2021-06-05 07:16:56,695 INFO L226 Difference]: Without dead ends: 3896 [2021-06-05 07:16:56,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 710.2ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:16:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-05 07:16:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-06-05 07:16:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-06-05 07:16:56,747 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-06-05 07:16:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:56,748 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-06-05 07:16:56,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-06-05 07:16:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:56,752 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:56,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:56,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 07:16:56,753 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash -155742630, now seen corresponding path program 58 times [2021-06-05 07:16:56,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:56,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606578589] [2021-06-05 07:16:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:56,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:56,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606578589] [2021-06-05 07:16:56,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606578589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:56,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:56,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:16:56,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435292840] [2021-06-05 07:16:56,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:16:56,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:56,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:16:56,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:16:56,996 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:58,130 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-06-05 07:16:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:16:58,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:58,137 INFO L225 Difference]: With dead ends: 3951 [2021-06-05 07:16:58,137 INFO L226 Difference]: Without dead ends: 3888 [2021-06-05 07:16:58,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 755.7ms TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:16:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-05 07:16:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-06-05 07:16:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-06-05 07:16:58,187 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-06-05 07:16:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:16:58,188 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-06-05 07:16:58,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-06-05 07:16:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:16:58,191 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:16:58,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:16:58,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 07:16:58,192 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:16:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:16:58,192 INFO L82 PathProgramCache]: Analyzing trace with hash -291421222, now seen corresponding path program 59 times [2021-06-05 07:16:58,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:16:58,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905812162] [2021-06-05 07:16:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:16:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:16:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:16:58,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:16:58,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905812162] [2021-06-05 07:16:58,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905812162] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:16:58,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:16:58,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:16:58,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804222696] [2021-06-05 07:16:58,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:16:58,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:16:58,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:16:58,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:16:58,428 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:16:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:16:59,989 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-06-05 07:16:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:16:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:16:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:16:59,996 INFO L225 Difference]: With dead ends: 4114 [2021-06-05 07:16:59,996 INFO L226 Difference]: Without dead ends: 4071 [2021-06-05 07:16:59,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1049.7ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:17:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-06-05 07:17:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-06-05 07:17:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-06-05 07:17:00,044 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-06-05 07:17:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:00,044 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-06-05 07:17:00,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:00,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-06-05 07:17:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:00,049 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:00,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:00,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 07:17:00,049 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:00,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:00,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2072019524, now seen corresponding path program 60 times [2021-06-05 07:17:00,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:00,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7545288] [2021-06-05 07:17:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:00,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:00,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7545288] [2021-06-05 07:17:00,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7545288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:00,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:00,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:00,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947255211] [2021-06-05 07:17:00,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:00,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:00,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:00,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:00,247 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:01,689 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-06-05 07:17:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:17:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:01,695 INFO L225 Difference]: With dead ends: 4102 [2021-06-05 07:17:01,695 INFO L226 Difference]: Without dead ends: 4050 [2021-06-05 07:17:01,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 956.6ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:17:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-06-05 07:17:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-06-05 07:17:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-06-05 07:17:01,741 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-06-05 07:17:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:01,742 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-06-05 07:17:01,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-06-05 07:17:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:01,745 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:01,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:01,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 07:17:01,746 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:01,746 INFO L82 PathProgramCache]: Analyzing trace with hash 627062348, now seen corresponding path program 61 times [2021-06-05 07:17:01,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:01,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52034471] [2021-06-05 07:17:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:01,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:01,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52034471] [2021-06-05 07:17:01,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52034471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:01,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:01,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:01,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961831052] [2021-06-05 07:17:01,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:01,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:01,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:01,979 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:03,157 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-06-05 07:17:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:17:03,157 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:03,164 INFO L225 Difference]: With dead ends: 4079 [2021-06-05 07:17:03,164 INFO L226 Difference]: Without dead ends: 4024 [2021-06-05 07:17:03,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 761.3ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:17:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-05 07:17:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-06-05 07:17:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.3552742616033755) internal successors, (11928), 3555 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-06-05 07:17:03,213 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-06-05 07:17:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:03,213 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-06-05 07:17:03,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-06-05 07:17:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:03,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:03,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:03,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 07:17:03,217 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:03,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:03,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1799714570, now seen corresponding path program 62 times [2021-06-05 07:17:03,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:03,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674942278] [2021-06-05 07:17:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:03,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:03,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674942278] [2021-06-05 07:17:03,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674942278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:03,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:03,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:03,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356845409] [2021-06-05 07:17:03,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:03,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:03,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:03,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:03,419 INFO L87 Difference]: Start difference. First operand 3556 states and 11928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:04,510 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-06-05 07:17:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:17:04,511 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:04,519 INFO L225 Difference]: With dead ends: 4014 [2021-06-05 07:17:04,519 INFO L226 Difference]: Without dead ends: 3968 [2021-06-05 07:17:04,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 703.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:17:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-06-05 07:17:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-06-05 07:17:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-06-05 07:17:04,576 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-06-05 07:17:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:04,576 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-06-05 07:17:04,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-06-05 07:17:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:04,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:04,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:04,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 07:17:04,606 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1552248408, now seen corresponding path program 63 times [2021-06-05 07:17:04,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:04,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833008435] [2021-06-05 07:17:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:04,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:04,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833008435] [2021-06-05 07:17:04,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833008435] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:04,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:04,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:04,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44370947] [2021-06-05 07:17:04,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:04,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:04,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:04,806 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:06,083 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-06-05 07:17:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:17:06,083 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:06,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:06,090 INFO L225 Difference]: With dead ends: 3980 [2021-06-05 07:17:06,091 INFO L226 Difference]: Without dead ends: 3931 [2021-06-05 07:17:06,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 857.0ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:17:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-06-05 07:17:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-06-05 07:17:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.3572837418991264) internal successors, (11915), 3549 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-06-05 07:17:06,144 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-06-05 07:17:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:06,144 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-06-05 07:17:06,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-06-05 07:17:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:06,148 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:06,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:06,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 07:17:06,149 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1203843366, now seen corresponding path program 64 times [2021-06-05 07:17:06,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:06,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958371507] [2021-06-05 07:17:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:06,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:06,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958371507] [2021-06-05 07:17:06,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958371507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:06,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:06,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:06,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068908018] [2021-06-05 07:17:06,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:06,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:06,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:06,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:06,347 INFO L87 Difference]: Start difference. First operand 3550 states and 11915 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:07,468 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-06-05 07:17:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:17:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:07,475 INFO L225 Difference]: With dead ends: 4021 [2021-06-05 07:17:07,475 INFO L226 Difference]: Without dead ends: 3954 [2021-06-05 07:17:07,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 662.2ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:17:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-06-05 07:17:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-06-05 07:17:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.3499582056283086) internal successors, (12023), 3589 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-06-05 07:17:07,548 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-06-05 07:17:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:07,549 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-06-05 07:17:07,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-06-05 07:17:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:07,554 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:07,554 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:07,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 07:17:07,554 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1334438214, now seen corresponding path program 65 times [2021-06-05 07:17:07,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:07,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087152908] [2021-06-05 07:17:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:07,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:07,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087152908] [2021-06-05 07:17:07,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087152908] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:07,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:07,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:07,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631672066] [2021-06-05 07:17:07,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:07,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:07,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:07,749 INFO L87 Difference]: Start difference. First operand 3590 states and 12023 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:08,868 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-06-05 07:17:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:17:08,868 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:08,874 INFO L225 Difference]: With dead ends: 4009 [2021-06-05 07:17:08,874 INFO L226 Difference]: Without dead ends: 3946 [2021-06-05 07:17:08,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 668.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:17:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-06-05 07:17:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-06-05 07:17:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3507400167550965) internal successors, (11999), 3581 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-06-05 07:17:08,920 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-06-05 07:17:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:08,920 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-06-05 07:17:08,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-06-05 07:17:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:08,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:08,925 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:08,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 07:17:08,925 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:08,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1864338662, now seen corresponding path program 66 times [2021-06-05 07:17:08,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:08,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011901575] [2021-06-05 07:17:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:09,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:09,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011901575] [2021-06-05 07:17:09,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011901575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:09,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:09,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:09,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485246010] [2021-06-05 07:17:09,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:09,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:09,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:09,120 INFO L87 Difference]: Start difference. First operand 3582 states and 11999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:10,208 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-06-05 07:17:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:17:10,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:10,215 INFO L225 Difference]: With dead ends: 4021 [2021-06-05 07:17:10,215 INFO L226 Difference]: Without dead ends: 3898 [2021-06-05 07:17:10,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 634.8ms TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:17:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-05 07:17:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-06-05 07:17:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-06-05 07:17:10,262 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-06-05 07:17:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:10,262 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-06-05 07:17:10,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:10,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-06-05 07:17:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:10,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:10,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:10,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 07:17:10,266 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:10,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1712217464, now seen corresponding path program 67 times [2021-06-05 07:17:10,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:10,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866535625] [2021-06-05 07:17:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:10,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:10,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866535625] [2021-06-05 07:17:10,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866535625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:10,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:10,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:10,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094933875] [2021-06-05 07:17:10,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:10,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:10,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:10,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:10,525 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:12,476 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-06-05 07:17:12,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:17:12,476 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:12,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:12,485 INFO L225 Difference]: With dead ends: 5827 [2021-06-05 07:17:12,485 INFO L226 Difference]: Without dead ends: 5741 [2021-06-05 07:17:12,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1141.3ms TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:17:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-06-05 07:17:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-06-05 07:17:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-06-05 07:17:12,540 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-06-05 07:17:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:12,540 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-06-05 07:17:12,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-06-05 07:17:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:12,548 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:12,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:12,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 07:17:12,549 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash -68380838, now seen corresponding path program 68 times [2021-06-05 07:17:12,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:12,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864700299] [2021-06-05 07:17:12,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:12,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:12,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864700299] [2021-06-05 07:17:12,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864700299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:12,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:12,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:12,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899819393] [2021-06-05 07:17:12,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:12,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:12,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:12,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:12,753 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:14,999 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-06-05 07:17:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 07:17:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:15,011 INFO L225 Difference]: With dead ends: 6643 [2021-06-05 07:17:15,011 INFO L226 Difference]: Without dead ends: 6539 [2021-06-05 07:17:15,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 1271.7ms TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 07:17:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-06-05 07:17:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-06-05 07:17:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-06-05 07:17:15,070 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-06-05 07:17:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:15,071 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-06-05 07:17:15,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-06-05 07:17:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:15,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:15,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:15,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 07:17:15,075 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1664266262, now seen corresponding path program 69 times [2021-06-05 07:17:15,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:15,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277329000] [2021-06-05 07:17:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:15,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:15,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277329000] [2021-06-05 07:17:15,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277329000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:15,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:15,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:15,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324945651] [2021-06-05 07:17:15,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:15,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:15,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:15,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:15,292 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:16,884 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-06-05 07:17:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:17:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:16,893 INFO L225 Difference]: With dead ends: 5563 [2021-06-05 07:17:16,893 INFO L226 Difference]: Without dead ends: 5508 [2021-06-05 07:17:16,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 878.1ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:17:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-05 07:17:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-06-05 07:17:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3481379310344828) internal successors, (12137), 3625 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-06-05 07:17:16,949 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-06-05 07:17:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:16,949 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-06-05 07:17:16,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-06-05 07:17:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:16,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:16,953 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:16,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 07:17:16,953 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:16,954 INFO L82 PathProgramCache]: Analyzing trace with hash -491614040, now seen corresponding path program 70 times [2021-06-05 07:17:16,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:16,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207706161] [2021-06-05 07:17:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:17,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:17,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207706161] [2021-06-05 07:17:17,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207706161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:17,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:17,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:17,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079165750] [2021-06-05 07:17:17,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:17,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:17,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:17,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:17,171 INFO L87 Difference]: Start difference. First operand 3626 states and 12137 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:19,109 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-06-05 07:17:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:17:19,109 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:19,120 INFO L225 Difference]: With dead ends: 6424 [2021-06-05 07:17:19,120 INFO L226 Difference]: Without dead ends: 6364 [2021-06-05 07:17:19,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1048.0ms TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:17:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-06-05 07:17:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-06-05 07:17:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.348606127518631) internal successors, (12132), 3623 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-06-05 07:17:19,185 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-06-05 07:17:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:19,185 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-06-05 07:17:19,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-06-05 07:17:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:19,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:19,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:19,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 07:17:19,190 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1925949654, now seen corresponding path program 71 times [2021-06-05 07:17:19,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:19,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904595719] [2021-06-05 07:17:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:19,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:19,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904595719] [2021-06-05 07:17:19,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904595719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:19,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:19,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:19,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916295243] [2021-06-05 07:17:19,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:19,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:19,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:19,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:19,436 INFO L87 Difference]: Start difference. First operand 3624 states and 12132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:20,884 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-06-05 07:17:20,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:17:20,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:20,894 INFO L225 Difference]: With dead ends: 5514 [2021-06-05 07:17:20,895 INFO L226 Difference]: Without dead ends: 5423 [2021-06-05 07:17:20,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 808.7ms TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:17:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-06-05 07:17:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-06-05 07:17:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.346950041402153) internal successors, (12126), 3623 states have internal predecessors, (12126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-06-05 07:17:20,957 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-06-05 07:17:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:20,957 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-06-05 07:17:20,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-06-05 07:17:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:20,964 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:20,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:20,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 07:17:20,964 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:20,964 INFO L82 PathProgramCache]: Analyzing trace with hash 423467448, now seen corresponding path program 72 times [2021-06-05 07:17:20,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:20,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331856454] [2021-06-05 07:17:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:21,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:21,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331856454] [2021-06-05 07:17:21,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331856454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:21,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:21,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:21,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364892431] [2021-06-05 07:17:21,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:21,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:21,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:21,182 INFO L87 Difference]: Start difference. First operand 3624 states and 12126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:22,896 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-06-05 07:17:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:17:22,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:22,907 INFO L225 Difference]: With dead ends: 6327 [2021-06-05 07:17:22,907 INFO L226 Difference]: Without dead ends: 6211 [2021-06-05 07:17:22,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 910.0ms TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:17:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-06-05 07:17:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-06-05 07:17:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 3.3531380753138076) internal successors, (12021), 3585 states have internal predecessors, (12021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-06-05 07:17:22,973 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-06-05 07:17:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:22,973 INFO L482 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-06-05 07:17:22,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-06-05 07:17:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:22,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:22,978 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:22,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 07:17:22,978 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1052700712, now seen corresponding path program 73 times [2021-06-05 07:17:22,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:22,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487117539] [2021-06-05 07:17:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:23,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:23,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487117539] [2021-06-05 07:17:23,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487117539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:23,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:23,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:23,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674759805] [2021-06-05 07:17:23,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:23,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:23,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:23,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:23,186 INFO L87 Difference]: Start difference. First operand 3586 states and 12021 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:24,075 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-06-05 07:17:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:17:24,076 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:24,082 INFO L225 Difference]: With dead ends: 3853 [2021-06-05 07:17:24,082 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 07:17:24,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 588.9ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:17:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 07:17:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-06-05 07:17:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3440682631434075) internal successors, (12149), 3633 states have internal predecessors, (12149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-06-05 07:17:24,132 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-06-05 07:17:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:24,132 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-06-05 07:17:24,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-06-05 07:17:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:24,137 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:24,137 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:24,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 07:17:24,137 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash 880557494, now seen corresponding path program 74 times [2021-06-05 07:17:24,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:24,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363156732] [2021-06-05 07:17:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:24,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:24,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363156732] [2021-06-05 07:17:24,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363156732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:24,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:24,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:24,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905252711] [2021-06-05 07:17:24,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:24,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:24,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:24,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:24,351 INFO L87 Difference]: Start difference. First operand 3634 states and 12149 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:25,272 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-06-05 07:17:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:17:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:25,278 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 07:17:25,278 INFO L226 Difference]: Without dead ends: 3778 [2021-06-05 07:17:25,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 588.8ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:17:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-06-05 07:17:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-06-05 07:17:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3448275862068964) internal successors, (12125), 3625 states have internal predecessors, (12125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-06-05 07:17:25,330 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-06-05 07:17:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:25,330 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-06-05 07:17:25,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-06-05 07:17:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:25,335 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:25,335 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:25,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 07:17:25,335 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:25,335 INFO L82 PathProgramCache]: Analyzing trace with hash -922276662, now seen corresponding path program 75 times [2021-06-05 07:17:25,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:25,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61322795] [2021-06-05 07:17:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:25,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:25,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61322795] [2021-06-05 07:17:25,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61322795] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:25,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:25,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:25,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450683471] [2021-06-05 07:17:25,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:25,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:25,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:25,584 INFO L87 Difference]: Start difference. First operand 3626 states and 12125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:26,493 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-06-05 07:17:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:17:26,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:26,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:26,499 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 07:17:26,500 INFO L226 Difference]: Without dead ends: 3698 [2021-06-05 07:17:26,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 628.4ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:17:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-05 07:17:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-06-05 07:17:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.355443604813882) internal successors, (11989), 3573 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-06-05 07:17:26,551 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-06-05 07:17:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:26,551 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-06-05 07:17:26,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-06-05 07:17:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:26,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:26,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:26,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 07:17:26,556 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:26,556 INFO L82 PathProgramCache]: Analyzing trace with hash -235569416, now seen corresponding path program 76 times [2021-06-05 07:17:26,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:26,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162879014] [2021-06-05 07:17:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:26,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:26,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162879014] [2021-06-05 07:17:26,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162879014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:26,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:26,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:26,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309475425] [2021-06-05 07:17:26,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:26,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:26,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:26,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:26,750 INFO L87 Difference]: Start difference. First operand 3574 states and 11989 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:27,821 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-06-05 07:17:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:17:27,822 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:27,828 INFO L225 Difference]: With dead ends: 3979 [2021-06-05 07:17:27,828 INFO L226 Difference]: Without dead ends: 3912 [2021-06-05 07:17:27,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 693.4ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:17:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-06-05 07:17:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-06-05 07:17:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.3512841756420877) internal successors, (12135), 3621 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-06-05 07:17:27,911 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-06-05 07:17:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:27,912 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-06-05 07:17:27,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-06-05 07:17:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:27,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:27,916 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:27,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 07:17:27,916 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:27,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:27,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1955185386, now seen corresponding path program 77 times [2021-06-05 07:17:27,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:27,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799397111] [2021-06-05 07:17:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:28,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:28,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799397111] [2021-06-05 07:17:28,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799397111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:28,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:28,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:28,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577551744] [2021-06-05 07:17:28,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:28,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:28,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:28,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:28,111 INFO L87 Difference]: Start difference. First operand 3622 states and 12135 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:29,492 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-06-05 07:17:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:17:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:29,498 INFO L225 Difference]: With dead ends: 4064 [2021-06-05 07:17:29,498 INFO L226 Difference]: Without dead ends: 4021 [2021-06-05 07:17:29,498 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 910.5ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:17:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-06-05 07:17:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-06-05 07:17:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-06-05 07:17:29,544 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-06-05 07:17:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:29,545 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-06-05 07:17:29,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-06-05 07:17:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:29,548 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:29,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:29,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 07:17:29,549 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:29,549 INFO L82 PathProgramCache]: Analyzing trace with hash 559183608, now seen corresponding path program 78 times [2021-06-05 07:17:29,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:29,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144007430] [2021-06-05 07:17:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:29,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:29,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144007430] [2021-06-05 07:17:29,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144007430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:29,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:29,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:29,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234137139] [2021-06-05 07:17:29,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:29,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:29,742 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:31,105 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-06-05 07:17:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:17:31,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:31,112 INFO L225 Difference]: With dead ends: 4019 [2021-06-05 07:17:31,112 INFO L226 Difference]: Without dead ends: 3955 [2021-06-05 07:17:31,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 906.7ms TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:17:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-06-05 07:17:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-06-05 07:17:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3541147132169575) internal successors, (12105), 3609 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-06-05 07:17:31,163 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-06-05 07:17:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:31,163 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-06-05 07:17:31,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:31,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-06-05 07:17:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:31,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:31,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:31,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 07:17:31,167 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:31,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1179618008, now seen corresponding path program 79 times [2021-06-05 07:17:31,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:31,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812491692] [2021-06-05 07:17:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:31,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:31,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812491692] [2021-06-05 07:17:31,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812491692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:31,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:31,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:31,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25765592] [2021-06-05 07:17:31,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:31,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:31,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:31,363 INFO L87 Difference]: Start difference. First operand 3610 states and 12105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:32,425 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-06-05 07:17:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:17:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:32,432 INFO L225 Difference]: With dead ends: 3979 [2021-06-05 07:17:32,432 INFO L226 Difference]: Without dead ends: 3912 [2021-06-05 07:17:32,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 676.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:17:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-06-05 07:17:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-06-05 07:17:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-06-05 07:17:32,486 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-06-05 07:17:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:32,486 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-06-05 07:17:32,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-06-05 07:17:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:32,491 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:32,491 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:32,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 07:17:32,491 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1049023160, now seen corresponding path program 80 times [2021-06-05 07:17:32,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:32,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239121341] [2021-06-05 07:17:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:32,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:32,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239121341] [2021-06-05 07:17:32,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239121341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:32,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:32,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:32,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245915295] [2021-06-05 07:17:32,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:32,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:32,697 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:33,805 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-06-05 07:17:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:17:33,805 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:33,811 INFO L225 Difference]: With dead ends: 3967 [2021-06-05 07:17:33,811 INFO L226 Difference]: Without dead ends: 3904 [2021-06-05 07:17:33,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 724.2ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:17:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-05 07:17:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-06-05 07:17:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-06-05 07:17:33,855 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-06-05 07:17:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:33,855 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-06-05 07:17:33,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-06-05 07:17:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:33,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:33,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:33,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 07:17:33,859 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:33,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:33,859 INFO L82 PathProgramCache]: Analyzing trace with hash 913344568, now seen corresponding path program 81 times [2021-06-05 07:17:33,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:33,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622604612] [2021-06-05 07:17:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:34,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:34,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622604612] [2021-06-05 07:17:34,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622604612] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:34,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:34,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:34,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417125238] [2021-06-05 07:17:34,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:34,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:34,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:34,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:34,054 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:35,480 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-06-05 07:17:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:17:35,480 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:35,487 INFO L225 Difference]: With dead ends: 4130 [2021-06-05 07:17:35,487 INFO L226 Difference]: Without dead ends: 4087 [2021-06-05 07:17:35,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 936.0ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:17:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-06-05 07:17:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-06-05 07:17:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-06-05 07:17:35,541 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-06-05 07:17:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:35,541 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-06-05 07:17:35,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-06-05 07:17:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:35,545 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:35,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:35,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 07:17:35,546 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:35,546 INFO L82 PathProgramCache]: Analyzing trace with hash -867253734, now seen corresponding path program 82 times [2021-06-05 07:17:35,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:35,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305908889] [2021-06-05 07:17:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:35,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:35,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305908889] [2021-06-05 07:17:35,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305908889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:35,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:35,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:35,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060785033] [2021-06-05 07:17:35,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:35,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:35,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:35,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:35,747 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:37,153 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-06-05 07:17:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:17:37,153 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:37,160 INFO L225 Difference]: With dead ends: 4118 [2021-06-05 07:17:37,160 INFO L226 Difference]: Without dead ends: 4066 [2021-06-05 07:17:37,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 944.6ms TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:17:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-06-05 07:17:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-06-05 07:17:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-06-05 07:17:37,227 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-06-05 07:17:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:37,227 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-06-05 07:17:37,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-06-05 07:17:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:37,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:37,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:37,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 07:17:37,234 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:37,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:37,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1831828138, now seen corresponding path program 83 times [2021-06-05 07:17:37,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:37,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999567597] [2021-06-05 07:17:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:37,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:37,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999567597] [2021-06-05 07:17:37,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999567597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:37,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:37,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:37,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771226656] [2021-06-05 07:17:37,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:37,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:37,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:37,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:37,486 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:38,681 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-06-05 07:17:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:17:38,681 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:38,688 INFO L225 Difference]: With dead ends: 4095 [2021-06-05 07:17:38,688 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 07:17:38,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 786.0ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:17:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 07:17:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-06-05 07:17:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3519800609249515) internal successors, (12104), 3611 states have internal predecessors, (12104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-06-05 07:17:38,742 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-06-05 07:17:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:38,742 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-06-05 07:17:38,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-06-05 07:17:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:38,747 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:38,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:38,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 07:17:38,747 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1290486936, now seen corresponding path program 84 times [2021-06-05 07:17:38,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:38,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254781249] [2021-06-05 07:17:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:38,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:38,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254781249] [2021-06-05 07:17:38,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254781249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:38,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:38,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:38,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242940739] [2021-06-05 07:17:38,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:38,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:38,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:38,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:38,939 INFO L87 Difference]: Start difference. First operand 3612 states and 12104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:39,993 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-06-05 07:17:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:17:39,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:40,000 INFO L225 Difference]: With dead ends: 4030 [2021-06-05 07:17:40,000 INFO L226 Difference]: Without dead ends: 3984 [2021-06-05 07:17:40,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 668.7ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:17:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-05 07:17:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-06-05 07:17:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.350484094052559) internal successors, (12112), 3615 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-06-05 07:17:40,044 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-06-05 07:17:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:40,044 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-06-05 07:17:40,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-06-05 07:17:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:40,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:40,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:40,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 07:17:40,049 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:40,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1537953098, now seen corresponding path program 85 times [2021-06-05 07:17:40,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:40,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143107597] [2021-06-05 07:17:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:40,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:40,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143107597] [2021-06-05 07:17:40,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143107597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:40,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:40,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:40,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455068544] [2021-06-05 07:17:40,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:40,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:40,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:40,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:40,278 INFO L87 Difference]: Start difference. First operand 3616 states and 12112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:41,354 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-06-05 07:17:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:17:41,359 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:41,365 INFO L225 Difference]: With dead ends: 3990 [2021-06-05 07:17:41,365 INFO L226 Difference]: Without dead ends: 3941 [2021-06-05 07:17:41,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 723.8ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:17:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-06-05 07:17:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-06-05 07:17:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3539528432732317) internal successors, (12091), 3605 states have internal predecessors, (12091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-06-05 07:17:41,413 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-06-05 07:17:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:41,413 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-06-05 07:17:41,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:41,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-06-05 07:17:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:41,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:41,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:41,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 07:17:41,417 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash 922424, now seen corresponding path program 86 times [2021-06-05 07:17:41,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:41,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906724028] [2021-06-05 07:17:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:41,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:41,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906724028] [2021-06-05 07:17:41,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906724028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:41,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:41,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:41,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479319406] [2021-06-05 07:17:41,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:41,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:41,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:41,609 INFO L87 Difference]: Start difference. First operand 3606 states and 12091 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:42,630 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-06-05 07:17:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:17:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:42,637 INFO L225 Difference]: With dead ends: 4037 [2021-06-05 07:17:42,637 INFO L226 Difference]: Without dead ends: 3970 [2021-06-05 07:17:42,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 594.2ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:17:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-06-05 07:17:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-06-05 07:17:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3467764060356653) internal successors, (12199), 3645 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-06-05 07:17:42,688 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-06-05 07:17:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:42,688 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-06-05 07:17:42,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-06-05 07:17:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:42,695 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:42,695 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:42,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 07:17:42,695 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:42,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:42,695 INFO L82 PathProgramCache]: Analyzing trace with hash -129672424, now seen corresponding path program 87 times [2021-06-05 07:17:42,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:42,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282078348] [2021-06-05 07:17:42,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:42,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:42,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282078348] [2021-06-05 07:17:42,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282078348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:42,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:42,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:42,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530737334] [2021-06-05 07:17:42,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:42,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:42,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:42,889 INFO L87 Difference]: Start difference. First operand 3646 states and 12199 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:43,904 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-06-05 07:17:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:17:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:43,910 INFO L225 Difference]: With dead ends: 4025 [2021-06-05 07:17:43,911 INFO L226 Difference]: Without dead ends: 3962 [2021-06-05 07:17:43,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 599.0ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:17:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-06-05 07:17:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-06-05 07:17:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3475391806433876) internal successors, (12175), 3637 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-06-05 07:17:43,962 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-06-05 07:17:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:43,962 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-06-05 07:17:43,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-06-05 07:17:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:43,966 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:43,966 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:43,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 07:17:43,966 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:43,967 INFO L82 PathProgramCache]: Analyzing trace with hash -659572872, now seen corresponding path program 88 times [2021-06-05 07:17:43,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:43,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903755919] [2021-06-05 07:17:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:44,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:44,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903755919] [2021-06-05 07:17:44,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903755919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:44,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:44,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:44,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934103437] [2021-06-05 07:17:44,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:44,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:44,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:44,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:44,158 INFO L87 Difference]: Start difference. First operand 3638 states and 12175 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:45,192 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-06-05 07:17:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:17:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:45,199 INFO L225 Difference]: With dead ends: 4037 [2021-06-05 07:17:45,199 INFO L226 Difference]: Without dead ends: 3914 [2021-06-05 07:17:45,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 587.9ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:17:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-06-05 07:17:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-06-05 07:17:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-06-05 07:17:45,245 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-06-05 07:17:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:45,245 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-06-05 07:17:45,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-06-05 07:17:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:45,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:45,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:45,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 07:17:45,250 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:45,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1377984042, now seen corresponding path program 89 times [2021-06-05 07:17:45,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:45,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580147907] [2021-06-05 07:17:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:45,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:45,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580147907] [2021-06-05 07:17:45,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580147907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:45,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:45,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:45,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114798781] [2021-06-05 07:17:45,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:45,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:45,468 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:47,129 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-06-05 07:17:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:17:47,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:47,139 INFO L225 Difference]: With dead ends: 5612 [2021-06-05 07:17:47,139 INFO L226 Difference]: Without dead ends: 5569 [2021-06-05 07:17:47,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 951.3ms TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:17:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-06-05 07:17:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-06-05 07:17:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3478861563967945) internal successors, (12116), 3619 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-06-05 07:17:47,203 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-06-05 07:17:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:47,203 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-06-05 07:17:47,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-06-05 07:17:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:47,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:47,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:47,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 07:17:47,208 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:47,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1136384952, now seen corresponding path program 90 times [2021-06-05 07:17:47,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:47,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902858924] [2021-06-05 07:17:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:47,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:47,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902858924] [2021-06-05 07:17:47,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902858924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:47,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:47,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:47,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015998684] [2021-06-05 07:17:47,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:47,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:47,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:47,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:47,413 INFO L87 Difference]: Start difference. First operand 3620 states and 12116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:49,393 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-06-05 07:17:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 07:17:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:49,405 INFO L225 Difference]: With dead ends: 6473 [2021-06-05 07:17:49,405 INFO L226 Difference]: Without dead ends: 6421 [2021-06-05 07:17:49,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1081.6ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:17:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-06-05 07:17:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-06-05 07:17:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-06-05 07:17:49,473 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-06-05 07:17:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:49,473 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-06-05 07:17:49,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-06-05 07:17:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:49,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:49,478 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:49,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 07:17:49,478 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash -459500472, now seen corresponding path program 91 times [2021-06-05 07:17:49,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:49,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196137974] [2021-06-05 07:17:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:49,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:49,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196137974] [2021-06-05 07:17:49,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196137974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:49,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:49,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:49,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136746505] [2021-06-05 07:17:49,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:49,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:49,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:49,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:49,668 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:51,018 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-06-05 07:17:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:17:51,019 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:51,028 INFO L225 Difference]: With dead ends: 5417 [2021-06-05 07:17:51,028 INFO L226 Difference]: Without dead ends: 5362 [2021-06-05 07:17:51,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 726.1ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:17:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-06-05 07:17:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-06-05 07:17:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 3.3487406587323556) internal successors, (12099), 3613 states have internal predecessors, (12099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-06-05 07:17:51,093 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-06-05 07:17:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:51,094 INFO L482 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-06-05 07:17:51,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-06-05 07:17:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:51,099 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:51,099 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:51,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 07:17:51,099 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 713151750, now seen corresponding path program 92 times [2021-06-05 07:17:51,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:51,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328006589] [2021-06-05 07:17:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:51,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:51,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328006589] [2021-06-05 07:17:51,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328006589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:51,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:51,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:51,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746067558] [2021-06-05 07:17:51,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:51,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:51,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:51,288 INFO L87 Difference]: Start difference. First operand 3614 states and 12099 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:52,893 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-06-05 07:17:52,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:17:52,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:52,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:52,904 INFO L225 Difference]: With dead ends: 6278 [2021-06-05 07:17:52,904 INFO L226 Difference]: Without dead ends: 6218 [2021-06-05 07:17:52,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 831.9ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:17:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-06-05 07:17:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-06-05 07:17:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3492107449459985) internal successors, (12094), 3611 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-06-05 07:17:52,974 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-06-05 07:17:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:52,974 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-06-05 07:17:52,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-06-05 07:17:52,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:52,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:52,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:52,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 07:17:52,979 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:52,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1164251852, now seen corresponding path program 93 times [2021-06-05 07:17:52,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:52,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267250122] [2021-06-05 07:17:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:53,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:53,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267250122] [2021-06-05 07:17:53,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267250122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:53,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:53,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:53,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006345164] [2021-06-05 07:17:53,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:53,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:53,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:53,182 INFO L87 Difference]: Start difference. First operand 3612 states and 12094 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:54,483 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-06-05 07:17:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:17:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:54,497 INFO L225 Difference]: With dead ends: 5378 [2021-06-05 07:17:54,497 INFO L226 Difference]: Without dead ends: 5287 [2021-06-05 07:17:54,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 686.5ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:17:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-06-05 07:17:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-06-05 07:17:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3475491553586263) internal successors, (12088), 3611 states have internal predecessors, (12088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-06-05 07:17:54,564 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-06-05 07:17:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:54,565 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-06-05 07:17:54,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-06-05 07:17:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:54,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:54,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:54,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 07:17:54,570 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:54,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1628233238, now seen corresponding path program 94 times [2021-06-05 07:17:54,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:54,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957576056] [2021-06-05 07:17:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:54,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:54,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957576056] [2021-06-05 07:17:54,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957576056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:54,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:54,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:54,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447809794] [2021-06-05 07:17:54,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:54,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:54,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:54,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:54,764 INFO L87 Difference]: Start difference. First operand 3612 states and 12088 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:56,308 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-06-05 07:17:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:17:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:56,318 INFO L225 Difference]: With dead ends: 6191 [2021-06-05 07:17:56,319 INFO L226 Difference]: Without dead ends: 6075 [2021-06-05 07:17:56,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 791.7ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:17:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-06-05 07:17:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-06-05 07:17:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.353859013652828) internal successors, (12037), 3589 states have internal predecessors, (12037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-06-05 07:17:56,383 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-06-05 07:17:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:56,383 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-06-05 07:17:56,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-06-05 07:17:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:56,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:56,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:56,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 07:17:56,388 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:56,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2037500794, now seen corresponding path program 95 times [2021-06-05 07:17:56,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:56,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983867823] [2021-06-05 07:17:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:56,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:56,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983867823] [2021-06-05 07:17:56,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983867823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:56,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:56,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:56,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900160461] [2021-06-05 07:17:56,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:56,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:56,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:56,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:56,604 INFO L87 Difference]: Start difference. First operand 3590 states and 12037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:57,440 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-06-05 07:17:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:17:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:57,447 INFO L225 Difference]: With dead ends: 3901 [2021-06-05 07:17:57,447 INFO L226 Difference]: Without dead ends: 3834 [2021-06-05 07:17:57,447 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 554.8ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:17:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-06-05 07:17:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-06-05 07:17:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.342935528120713) internal successors, (12185), 3645 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-06-05 07:17:57,497 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-06-05 07:17:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:57,497 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-06-05 07:17:57,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-06-05 07:17:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:57,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:57,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:57,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 07:17:57,502 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2085323284, now seen corresponding path program 96 times [2021-06-05 07:17:57,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:57,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275638701] [2021-06-05 07:17:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:57,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:57,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275638701] [2021-06-05 07:17:57,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275638701] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:57,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:57,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:57,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530502154] [2021-06-05 07:17:57,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:57,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:57,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:57,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:57,695 INFO L87 Difference]: Start difference. First operand 3646 states and 12185 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:58,551 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-06-05 07:17:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:17:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:58,558 INFO L225 Difference]: With dead ends: 3889 [2021-06-05 07:17:58,558 INFO L226 Difference]: Without dead ends: 3826 [2021-06-05 07:17:58,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 565.9ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:17:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-06-05 07:17:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-06-05 07:17:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.343689854275502) internal successors, (12161), 3637 states have internal predecessors, (12161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-06-05 07:17:58,610 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-06-05 07:17:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:58,610 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-06-05 07:17:58,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-06-05 07:17:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:58,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:58,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:58,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 07:17:58,615 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 282489128, now seen corresponding path program 97 times [2021-06-05 07:17:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:58,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034824982] [2021-06-05 07:17:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:58,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:58,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034824982] [2021-06-05 07:17:58,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034824982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:58,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:58,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:58,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978964119] [2021-06-05 07:17:58,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:58,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:58,804 INFO L87 Difference]: Start difference. First operand 3638 states and 12161 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:17:59,655 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-06-05 07:17:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:17:59,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:17:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:17:59,662 INFO L225 Difference]: With dead ends: 3889 [2021-06-05 07:17:59,662 INFO L226 Difference]: Without dead ends: 3754 [2021-06-05 07:17:59,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 561.7ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:17:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-06-05 07:17:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-06-05 07:17:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3523517951572503) internal successors, (12045), 3593 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-06-05 07:17:59,710 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-06-05 07:17:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:17:59,710 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-06-05 07:17:59,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:17:59,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-06-05 07:17:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:17:59,714 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:17:59,714 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:17:59,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 07:17:59,714 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:17:59,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:17:59,715 INFO L82 PathProgramCache]: Analyzing trace with hash 861908364, now seen corresponding path program 98 times [2021-06-05 07:17:59,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:17:59,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504783725] [2021-06-05 07:17:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:17:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:17:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:17:59,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:17:59,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504783725] [2021-06-05 07:17:59,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504783725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:17:59,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:17:59,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:17:59,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002880065] [2021-06-05 07:17:59,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:17:59,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:17:59,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:17:59,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:17:59,914 INFO L87 Difference]: Start difference. First operand 3594 states and 12045 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:00,720 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-06-05 07:18:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:18:00,720 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:00,726 INFO L225 Difference]: With dead ends: 3825 [2021-06-05 07:18:00,727 INFO L226 Difference]: Without dead ends: 3758 [2021-06-05 07:18:00,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 530.6ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:18:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-06-05 07:18:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-06-05 07:18:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.341463414634146) internal successors, (12193), 3649 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-06-05 07:18:00,775 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-06-05 07:18:00,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:00,775 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-06-05 07:18:00,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-06-05 07:18:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:00,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:00,779 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:00,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 07:18:00,779 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:00,779 INFO L82 PathProgramCache]: Analyzing trace with hash 689765146, now seen corresponding path program 99 times [2021-06-05 07:18:00,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:00,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545189715] [2021-06-05 07:18:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:00,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:00,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545189715] [2021-06-05 07:18:00,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545189715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:00,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:00,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:18:00,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927622547] [2021-06-05 07:18:00,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:18:00,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:00,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:18:00,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:18:00,995 INFO L87 Difference]: Start difference. First operand 3650 states and 12193 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:01,813 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-06-05 07:18:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:18:01,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:01,819 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 07:18:01,819 INFO L226 Difference]: Without dead ends: 3750 [2021-06-05 07:18:01,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 539.9ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:18:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-06-05 07:18:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-06-05 07:18:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3422136775611095) internal successors, (12169), 3641 states have internal predecessors, (12169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-06-05 07:18:01,869 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-06-05 07:18:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:01,869 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-06-05 07:18:01,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-06-05 07:18:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:01,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:01,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:01,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 07:18:01,874 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:01,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1113069010, now seen corresponding path program 100 times [2021-06-05 07:18:01,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:01,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756404833] [2021-06-05 07:18:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:02,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:02,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756404833] [2021-06-05 07:18:02,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756404833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:02,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:02,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:18:02,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490095911] [2021-06-05 07:18:02,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:18:02,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:02,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:18:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:18:02,099 INFO L87 Difference]: Start difference. First operand 3642 states and 12169 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:02,905 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-06-05 07:18:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:18:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:02,911 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 07:18:02,911 INFO L226 Difference]: Without dead ends: 3662 [2021-06-05 07:18:02,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 527.9ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:18:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-06-05 07:18:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-06-05 07:18:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3557665456576373) internal successors, (12017), 3581 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-06-05 07:18:02,959 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-06-05 07:18:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:02,959 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-06-05 07:18:02,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-06-05 07:18:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:02,964 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:02,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:02,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 07:18:02,964 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:02,964 INFO L82 PathProgramCache]: Analyzing trace with hash 318375130, now seen corresponding path program 101 times [2021-06-05 07:18:02,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:02,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319409995] [2021-06-05 07:18:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:03,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:03,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319409995] [2021-06-05 07:18:03,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319409995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:03,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:03,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:03,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201856729] [2021-06-05 07:18:03,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:03,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:03,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:03,139 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:04,427 INFO L93 Difference]: Finished difference Result 4325 states and 14372 transitions. [2021-06-05 07:18:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:18:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:04,434 INFO L225 Difference]: With dead ends: 4325 [2021-06-05 07:18:04,435 INFO L226 Difference]: Without dead ends: 4258 [2021-06-05 07:18:04,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 764.1ms TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:18:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2021-06-05 07:18:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3658. [2021-06-05 07:18:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3500136724090783) internal successors, (12251), 3657 states have internal predecessors, (12251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12251 transitions. [2021-06-05 07:18:04,484 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12251 transitions. Word has length 39 [2021-06-05 07:18:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:04,484 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12251 transitions. [2021-06-05 07:18:04,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12251 transitions. [2021-06-05 07:18:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:04,489 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:04,489 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:04,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 07:18:04,489 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:04,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1401240840, now seen corresponding path program 102 times [2021-06-05 07:18:04,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:04,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434148364] [2021-06-05 07:18:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:04,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:04,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434148364] [2021-06-05 07:18:04,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434148364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:04,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:04,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:04,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661376732] [2021-06-05 07:18:04,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:04,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:04,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:04,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:04,686 INFO L87 Difference]: Start difference. First operand 3658 states and 12251 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:06,327 INFO L93 Difference]: Finished difference Result 4462 states and 14729 transitions. [2021-06-05 07:18:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:18:06,328 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:06,335 INFO L225 Difference]: With dead ends: 4462 [2021-06-05 07:18:06,335 INFO L226 Difference]: Without dead ends: 4419 [2021-06-05 07:18:06,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1020.2ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:18:06,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-06-05 07:18:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3664. [2021-06-05 07:18:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3480753480753482) internal successors, (12264), 3663 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12264 transitions. [2021-06-05 07:18:06,389 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12264 transitions. Word has length 39 [2021-06-05 07:18:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:06,389 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12264 transitions. [2021-06-05 07:18:06,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12264 transitions. [2021-06-05 07:18:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:06,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:06,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:06,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 07:18:06,393 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:06,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1113128154, now seen corresponding path program 103 times [2021-06-05 07:18:06,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:06,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778444935] [2021-06-05 07:18:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:06,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:06,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778444935] [2021-06-05 07:18:06,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778444935] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:06,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:06,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:06,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877197126] [2021-06-05 07:18:06,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:06,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:06,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:06,570 INFO L87 Difference]: Start difference. First operand 3664 states and 12264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:08,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:08,186 INFO L93 Difference]: Finished difference Result 4393 states and 14549 transitions. [2021-06-05 07:18:08,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:18:08,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:08,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:08,194 INFO L225 Difference]: With dead ends: 4393 [2021-06-05 07:18:08,194 INFO L226 Difference]: Without dead ends: 4329 [2021-06-05 07:18:08,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 986.7ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:18:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2021-06-05 07:18:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 3646. [2021-06-05 07:18:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.35281207133059) internal successors, (12221), 3645 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12221 transitions. [2021-06-05 07:18:08,251 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12221 transitions. Word has length 39 [2021-06-05 07:18:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:08,251 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12221 transitions. [2021-06-05 07:18:08,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12221 transitions. [2021-06-05 07:18:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:08,255 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:08,255 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:08,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 07:18:08,256 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:08,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1733562554, now seen corresponding path program 104 times [2021-06-05 07:18:08,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:08,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751293386] [2021-06-05 07:18:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:08,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:08,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751293386] [2021-06-05 07:18:08,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751293386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:08,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:08,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:08,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648923014] [2021-06-05 07:18:08,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:08,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:08,428 INFO L87 Difference]: Start difference. First operand 3646 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:09,523 INFO L93 Difference]: Finished difference Result 4273 states and 14194 transitions. [2021-06-05 07:18:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:18:09,523 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:09,530 INFO L225 Difference]: With dead ends: 4273 [2021-06-05 07:18:09,530 INFO L226 Difference]: Without dead ends: 4206 [2021-06-05 07:18:09,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 640.9ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:18:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-06-05 07:18:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3654. [2021-06-05 07:18:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-06-05 07:18:09,581 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-06-05 07:18:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:09,581 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-06-05 07:18:09,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-06-05 07:18:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:09,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:09,586 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:09,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 07:18:09,586 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:09,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1602967706, now seen corresponding path program 105 times [2021-06-05 07:18:09,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:09,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378034362] [2021-06-05 07:18:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:09,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:09,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378034362] [2021-06-05 07:18:09,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378034362] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:09,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:09,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:09,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062868967] [2021-06-05 07:18:09,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:09,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:09,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:09,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:09,767 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:10,925 INFO L93 Difference]: Finished difference Result 4261 states and 14154 transitions. [2021-06-05 07:18:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:18:10,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:10,932 INFO L225 Difference]: With dead ends: 4261 [2021-06-05 07:18:10,932 INFO L226 Difference]: Without dead ends: 4198 [2021-06-05 07:18:10,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 689.4ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:18:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-06-05 07:18:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3646. [2021-06-05 07:18:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-06-05 07:18:10,983 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-06-05 07:18:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:10,983 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-06-05 07:18:10,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-06-05 07:18:10,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:10,987 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:10,988 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:10,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 07:18:10,988 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:10,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1467289114, now seen corresponding path program 106 times [2021-06-05 07:18:10,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:10,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25354780] [2021-06-05 07:18:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:11,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:11,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25354780] [2021-06-05 07:18:11,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25354780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:11,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:11,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:11,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160408626] [2021-06-05 07:18:11,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:11,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:11,163 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:12,642 INFO L93 Difference]: Finished difference Result 4416 states and 14517 transitions. [2021-06-05 07:18:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:18:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:12,649 INFO L225 Difference]: With dead ends: 4416 [2021-06-05 07:18:12,649 INFO L226 Difference]: Without dead ends: 4373 [2021-06-05 07:18:12,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 946.3ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:18:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-06-05 07:18:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3654. [2021-06-05 07:18:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-06-05 07:18:12,704 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-06-05 07:18:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:12,704 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-06-05 07:18:12,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-06-05 07:18:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:12,709 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:12,709 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:12,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 07:18:12,709 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:12,710 INFO L82 PathProgramCache]: Analyzing trace with hash -313309188, now seen corresponding path program 107 times [2021-06-05 07:18:12,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:12,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384595880] [2021-06-05 07:18:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:12,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:12,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384595880] [2021-06-05 07:18:12,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384595880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:12,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:12,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:12,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099220543] [2021-06-05 07:18:12,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:12,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:12,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:12,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:12,881 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:14,311 INFO L93 Difference]: Finished difference Result 4404 states and 14479 transitions. [2021-06-05 07:18:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:18:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:14,319 INFO L225 Difference]: With dead ends: 4404 [2021-06-05 07:18:14,319 INFO L226 Difference]: Without dead ends: 4352 [2021-06-05 07:18:14,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 922.0ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:18:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-06-05 07:18:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 3646. [2021-06-05 07:18:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-06-05 07:18:14,379 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-06-05 07:18:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:14,379 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-06-05 07:18:14,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-06-05 07:18:14,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:14,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:14,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:14,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 07:18:14,385 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1909194612, now seen corresponding path program 108 times [2021-06-05 07:18:14,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:14,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228132352] [2021-06-05 07:18:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:14,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:14,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228132352] [2021-06-05 07:18:14,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228132352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:14,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:14,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:14,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448856005] [2021-06-05 07:18:14,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:14,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:14,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:14,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:14,561 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:15,705 INFO L93 Difference]: Finished difference Result 4381 states and 14402 transitions. [2021-06-05 07:18:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:18:15,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:15,712 INFO L225 Difference]: With dead ends: 4381 [2021-06-05 07:18:15,712 INFO L226 Difference]: Without dead ends: 4326 [2021-06-05 07:18:15,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 705.5ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:18:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-06-05 07:18:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3648. [2021-06-05 07:18:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.3506992048258843) internal successors, (12220), 3647 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12220 transitions. [2021-06-05 07:18:15,766 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12220 transitions. Word has length 39 [2021-06-05 07:18:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:15,766 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12220 transitions. [2021-06-05 07:18:15,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12220 transitions. [2021-06-05 07:18:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:15,770 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:15,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:15,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 07:18:15,770 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash -736542390, now seen corresponding path program 109 times [2021-06-05 07:18:15,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:15,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345033689] [2021-06-05 07:18:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:15,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:15,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345033689] [2021-06-05 07:18:15,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345033689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:15,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:15,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:15,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422359338] [2021-06-05 07:18:15,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:15,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:15,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:15,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:15,976 INFO L87 Difference]: Start difference. First operand 3648 states and 12220 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:17,051 INFO L93 Difference]: Finished difference Result 4316 states and 14250 transitions. [2021-06-05 07:18:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:18:17,051 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:17,058 INFO L225 Difference]: With dead ends: 4316 [2021-06-05 07:18:17,058 INFO L226 Difference]: Without dead ends: 4270 [2021-06-05 07:18:17,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 682.5ms TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:18:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-05 07:18:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3652. [2021-06-05 07:18:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3492193919474116) internal successors, (12228), 3651 states have internal predecessors, (12228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12228 transitions. [2021-06-05 07:18:17,110 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12228 transitions. Word has length 39 [2021-06-05 07:18:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:17,110 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12228 transitions. [2021-06-05 07:18:17,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12228 transitions. [2021-06-05 07:18:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:17,114 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:17,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:17,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 07:18:17,115 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:17,115 INFO L82 PathProgramCache]: Analyzing trace with hash -984008552, now seen corresponding path program 110 times [2021-06-05 07:18:17,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:17,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293266344] [2021-06-05 07:18:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:17,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:17,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293266344] [2021-06-05 07:18:17,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293266344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:17,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:17,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:17,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407649132] [2021-06-05 07:18:17,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:17,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:17,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:17,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:17,286 INFO L87 Difference]: Start difference. First operand 3652 states and 12228 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:18,706 INFO L93 Difference]: Finished difference Result 4387 states and 14459 transitions. [2021-06-05 07:18:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:18:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:18,713 INFO L225 Difference]: With dead ends: 4387 [2021-06-05 07:18:18,713 INFO L226 Difference]: Without dead ends: 4323 [2021-06-05 07:18:18,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 917.6ms TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:18:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-06-05 07:18:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3678. [2021-06-05 07:18:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 3.349197715528964) internal successors, (12315), 3677 states have internal predecessors, (12315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12315 transitions. [2021-06-05 07:18:18,766 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12315 transitions. Word has length 39 [2021-06-05 07:18:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:18,766 INFO L482 AbstractCegarLoop]: Abstraction has 3678 states and 12315 transitions. [2021-06-05 07:18:18,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12315 transitions. [2021-06-05 07:18:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:18,770 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:18,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:18,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 07:18:18,770 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:18,771 INFO L82 PathProgramCache]: Analyzing trace with hash 554866970, now seen corresponding path program 111 times [2021-06-05 07:18:18,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:18,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165633562] [2021-06-05 07:18:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:18,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:18,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165633562] [2021-06-05 07:18:18,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165633562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:18,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:18,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:18,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871626778] [2021-06-05 07:18:18,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:18,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:18,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:18,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:18,946 INFO L87 Difference]: Start difference. First operand 3678 states and 12315 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:20,004 INFO L93 Difference]: Finished difference Result 4269 states and 14200 transitions. [2021-06-05 07:18:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:18:20,007 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:20,013 INFO L225 Difference]: With dead ends: 4269 [2021-06-05 07:18:20,014 INFO L226 Difference]: Without dead ends: 4202 [2021-06-05 07:18:20,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 598.4ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:18:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-06-05 07:18:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3718. [2021-06-05 07:18:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 3717 states have (on average 3.3422114608555287) internal successors, (12423), 3717 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 12423 transitions. [2021-06-05 07:18:20,065 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 12423 transitions. Word has length 39 [2021-06-05 07:18:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:20,065 INFO L482 AbstractCegarLoop]: Abstraction has 3718 states and 12423 transitions. [2021-06-05 07:18:20,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 12423 transitions. [2021-06-05 07:18:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:20,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:20,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:20,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 07:18:20,070 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 424272122, now seen corresponding path program 112 times [2021-06-05 07:18:20,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:20,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600418158] [2021-06-05 07:18:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:20,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:20,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600418158] [2021-06-05 07:18:20,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600418158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:20,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:20,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:20,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128062458] [2021-06-05 07:18:20,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:20,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:20,244 INFO L87 Difference]: Start difference. First operand 3718 states and 12423 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:21,332 INFO L93 Difference]: Finished difference Result 4257 states and 14160 transitions. [2021-06-05 07:18:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:18:21,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:21,339 INFO L225 Difference]: With dead ends: 4257 [2021-06-05 07:18:21,340 INFO L226 Difference]: Without dead ends: 4194 [2021-06-05 07:18:21,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 615.6ms TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:18:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-06-05 07:18:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 3710. [2021-06-05 07:18:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3429495820976003) internal successors, (12399), 3709 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12399 transitions. [2021-06-05 07:18:21,392 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12399 transitions. Word has length 39 [2021-06-05 07:18:21,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:21,392 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12399 transitions. [2021-06-05 07:18:21,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12399 transitions. [2021-06-05 07:18:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:21,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:21,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:21,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 07:18:21,396 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash -105628326, now seen corresponding path program 113 times [2021-06-05 07:18:21,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:21,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181130406] [2021-06-05 07:18:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:21,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:21,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181130406] [2021-06-05 07:18:21,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181130406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:21,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:21,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:21,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064460958] [2021-06-05 07:18:21,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:21,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:21,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:21,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:21,572 INFO L87 Difference]: Start difference. First operand 3710 states and 12399 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:22,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:22,679 INFO L93 Difference]: Finished difference Result 4269 states and 14184 transitions. [2021-06-05 07:18:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:18:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:22,686 INFO L225 Difference]: With dead ends: 4269 [2021-06-05 07:18:22,686 INFO L226 Difference]: Without dead ends: 4130 [2021-06-05 07:18:22,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 622.3ms TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:18:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-06-05 07:18:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3662. [2021-06-05 07:18:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.347446052990986) internal successors, (12255), 3661 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12255 transitions. [2021-06-05 07:18:22,742 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12255 transitions. Word has length 39 [2021-06-05 07:18:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:22,742 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12255 transitions. [2021-06-05 07:18:22,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12255 transitions. [2021-06-05 07:18:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:22,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:22,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:22,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 07:18:22,746 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:22,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1578866516, now seen corresponding path program 114 times [2021-06-05 07:18:22,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:22,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711454339] [2021-06-05 07:18:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:22,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:22,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711454339] [2021-06-05 07:18:22,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711454339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:22,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:22,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:18:22,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330667233] [2021-06-05 07:18:22,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:18:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:22,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:18:22,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:18:22,901 INFO L87 Difference]: Start difference. First operand 3662 states and 12255 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:23,963 INFO L93 Difference]: Finished difference Result 4173 states and 13890 transitions. [2021-06-05 07:18:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:18:23,964 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:23,971 INFO L225 Difference]: With dead ends: 4173 [2021-06-05 07:18:23,971 INFO L226 Difference]: Without dead ends: 4094 [2021-06-05 07:18:23,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 656.3ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:18:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-06-05 07:18:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3686. [2021-06-05 07:18:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.343012211668928) internal successors, (12319), 3685 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12319 transitions. [2021-06-05 07:18:24,032 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12319 transitions. Word has length 39 [2021-06-05 07:18:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:24,032 INFO L482 AbstractCegarLoop]: Abstraction has 3686 states and 12319 transitions. [2021-06-05 07:18:24,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12319 transitions. [2021-06-05 07:18:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:24,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:24,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:24,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 07:18:24,037 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:24,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1192929108, now seen corresponding path program 115 times [2021-06-05 07:18:24,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:24,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738054875] [2021-06-05 07:18:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:24,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:24,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738054875] [2021-06-05 07:18:24,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738054875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:24,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:24,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:18:24,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746565451] [2021-06-05 07:18:24,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:18:24,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:24,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:18:24,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:18:24,193 INFO L87 Difference]: Start difference. First operand 3686 states and 12319 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:25,632 INFO L93 Difference]: Finished difference Result 4225 states and 14028 transitions. [2021-06-05 07:18:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:18:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:25,639 INFO L225 Difference]: With dead ends: 4225 [2021-06-05 07:18:25,639 INFO L226 Difference]: Without dead ends: 4095 [2021-06-05 07:18:25,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 885.2ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:18:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2021-06-05 07:18:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3662. [2021-06-05 07:18:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.345260857689156) internal successors, (12247), 3661 states have internal predecessors, (12247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12247 transitions. [2021-06-05 07:18:25,691 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12247 transitions. Word has length 39 [2021-06-05 07:18:25,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:25,691 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12247 transitions. [2021-06-05 07:18:25,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12247 transitions. [2021-06-05 07:18:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:25,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:25,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:25,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 07:18:25,696 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:25,696 INFO L82 PathProgramCache]: Analyzing trace with hash 645022744, now seen corresponding path program 116 times [2021-06-05 07:18:25,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:25,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153738617] [2021-06-05 07:18:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:25,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:25,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153738617] [2021-06-05 07:18:25,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153738617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:25,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:25,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:25,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451789201] [2021-06-05 07:18:25,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:25,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:25,871 INFO L87 Difference]: Start difference. First operand 3662 states and 12247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:27,149 INFO L93 Difference]: Finished difference Result 4187 states and 13913 transitions. [2021-06-05 07:18:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:18:27,150 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:27,157 INFO L225 Difference]: With dead ends: 4187 [2021-06-05 07:18:27,157 INFO L226 Difference]: Without dead ends: 4120 [2021-06-05 07:18:27,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 813.2ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:18:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-06-05 07:18:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3662. [2021-06-05 07:18:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-06-05 07:18:27,219 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-06-05 07:18:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:27,219 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-06-05 07:18:27,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-06-05 07:18:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:27,224 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:27,224 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:27,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 07:18:27,224 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:27,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1074593226, now seen corresponding path program 117 times [2021-06-05 07:18:27,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:27,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627397178] [2021-06-05 07:18:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:27,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:27,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627397178] [2021-06-05 07:18:27,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627397178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:27,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:27,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:27,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474103236] [2021-06-05 07:18:27,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:27,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:27,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:27,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:27,408 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:29,095 INFO L93 Difference]: Finished difference Result 4276 states and 14159 transitions. [2021-06-05 07:18:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:18:29,096 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:29,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:29,102 INFO L225 Difference]: With dead ends: 4276 [2021-06-05 07:18:29,102 INFO L226 Difference]: Without dead ends: 4215 [2021-06-05 07:18:29,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1117.2ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 07:18:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-06-05 07:18:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3650. [2021-06-05 07:18:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.344751986845711) internal successors, (12205), 3649 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12205 transitions. [2021-06-05 07:18:29,154 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12205 transitions. Word has length 39 [2021-06-05 07:18:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:29,154 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12205 transitions. [2021-06-05 07:18:29,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12205 transitions. [2021-06-05 07:18:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:29,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:29,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:29,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 07:18:29,159 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2060210168, now seen corresponding path program 118 times [2021-06-05 07:18:29,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:29,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026032538] [2021-06-05 07:18:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:29,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:29,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026032538] [2021-06-05 07:18:29,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026032538] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:29,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:29,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:29,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885972584] [2021-06-05 07:18:29,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:29,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:29,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:29,334 INFO L87 Difference]: Start difference. First operand 3650 states and 12205 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:30,400 INFO L93 Difference]: Finished difference Result 4073 states and 13548 transitions. [2021-06-05 07:18:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:18:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:30,426 INFO L225 Difference]: With dead ends: 4073 [2021-06-05 07:18:30,426 INFO L226 Difference]: Without dead ends: 4006 [2021-06-05 07:18:30,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 675.5ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:18:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2021-06-05 07:18:30,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 3658. [2021-06-05 07:18:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3418102269619907) internal successors, (12221), 3657 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12221 transitions. [2021-06-05 07:18:30,473 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12221 transitions. Word has length 39 [2021-06-05 07:18:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:30,473 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12221 transitions. [2021-06-05 07:18:30,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12221 transitions. [2021-06-05 07:18:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:30,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:30,478 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:30,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 07:18:30,478 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:30,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1929615320, now seen corresponding path program 119 times [2021-06-05 07:18:30,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:30,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662606076] [2021-06-05 07:18:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:30,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:30,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662606076] [2021-06-05 07:18:30,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662606076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:30,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:30,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:30,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002705654] [2021-06-05 07:18:30,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:30,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:30,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:30,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:30,649 INFO L87 Difference]: Start difference. First operand 3658 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:31,728 INFO L93 Difference]: Finished difference Result 4061 states and 13508 transitions. [2021-06-05 07:18:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:18:31,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:31,735 INFO L225 Difference]: With dead ends: 4061 [2021-06-05 07:18:31,735 INFO L226 Difference]: Without dead ends: 3998 [2021-06-05 07:18:31,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 688.5ms TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:18:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-05 07:18:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3650. [2021-06-05 07:18:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3436557961085227) internal successors, (12201), 3649 states have internal predecessors, (12201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12201 transitions. [2021-06-05 07:18:31,792 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12201 transitions. Word has length 39 [2021-06-05 07:18:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:31,792 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12201 transitions. [2021-06-05 07:18:31,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12201 transitions. [2021-06-05 07:18:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:31,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:31,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:31,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 07:18:31,797 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1793936728, now seen corresponding path program 120 times [2021-06-05 07:18:31,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:31,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516326044] [2021-06-05 07:18:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:31,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:31,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516326044] [2021-06-05 07:18:31,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516326044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:31,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:31,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:31,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965158089] [2021-06-05 07:18:31,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:31,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:31,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:31,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:31,966 INFO L87 Difference]: Start difference. First operand 3650 states and 12201 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:33,417 INFO L93 Difference]: Finished difference Result 4168 states and 13766 transitions. [2021-06-05 07:18:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:18:33,417 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:33,424 INFO L225 Difference]: With dead ends: 4168 [2021-06-05 07:18:33,424 INFO L226 Difference]: Without dead ends: 4119 [2021-06-05 07:18:33,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 966.8ms TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:18:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-06-05 07:18:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3644. [2021-06-05 07:18:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3450452923414766) internal successors, (12186), 3643 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12186 transitions. [2021-06-05 07:18:33,478 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12186 transitions. Word has length 39 [2021-06-05 07:18:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:33,479 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12186 transitions. [2021-06-05 07:18:33,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12186 transitions. [2021-06-05 07:18:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:33,483 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:33,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:33,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 07:18:33,484 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1582546998, now seen corresponding path program 121 times [2021-06-05 07:18:33,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:33,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727347726] [2021-06-05 07:18:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:33,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:33,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727347726] [2021-06-05 07:18:33,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727347726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:33,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:33,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:33,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895380254] [2021-06-05 07:18:33,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:33,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:33,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:33,661 INFO L87 Difference]: Start difference. First operand 3644 states and 12186 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:34,784 INFO L93 Difference]: Finished difference Result 4095 states and 13578 transitions. [2021-06-05 07:18:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:18:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:34,791 INFO L225 Difference]: With dead ends: 4095 [2021-06-05 07:18:34,792 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 07:18:34,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 722.8ms TimeCoverageRelationStatistics Valid=231, Invalid=2025, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:18:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 07:18:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3644. [2021-06-05 07:18:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.34449629426297) internal successors, (12184), 3643 states have internal predecessors, (12184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12184 transitions. [2021-06-05 07:18:34,851 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12184 transitions. Word has length 39 [2021-06-05 07:18:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:34,851 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12184 transitions. [2021-06-05 07:18:34,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12184 transitions. [2021-06-05 07:18:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:34,856 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:34,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:34,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 07:18:34,856 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash -409894776, now seen corresponding path program 122 times [2021-06-05 07:18:34,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:34,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230243612] [2021-06-05 07:18:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:35,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:35,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230243612] [2021-06-05 07:18:35,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230243612] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:35,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:35,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:35,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572366153] [2021-06-05 07:18:35,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:35,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:35,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:35,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:35,037 INFO L87 Difference]: Start difference. First operand 3644 states and 12184 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:36,122 INFO L93 Difference]: Finished difference Result 4038 states and 13446 transitions. [2021-06-05 07:18:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:18:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:36,130 INFO L225 Difference]: With dead ends: 4038 [2021-06-05 07:18:36,130 INFO L226 Difference]: Without dead ends: 3982 [2021-06-05 07:18:36,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 695.3ms TimeCoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:18:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-06-05 07:18:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-06-05 07:18:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3479218276906137) internal successors, (12163), 3633 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12163 transitions. [2021-06-05 07:18:36,185 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12163 transitions. Word has length 39 [2021-06-05 07:18:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:36,186 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12163 transitions. [2021-06-05 07:18:36,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12163 transitions. [2021-06-05 07:18:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:36,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:36,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:36,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 07:18:36,191 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:36,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1832153546, now seen corresponding path program 123 times [2021-06-05 07:18:36,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:36,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19578826] [2021-06-05 07:18:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:36,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:36,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19578826] [2021-06-05 07:18:36,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19578826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:36,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:36,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:36,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694909729] [2021-06-05 07:18:36,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:36,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:36,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:36,367 INFO L87 Difference]: Start difference. First operand 3634 states and 12163 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:37,988 INFO L93 Difference]: Finished difference Result 4309 states and 14202 transitions. [2021-06-05 07:18:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:18:37,988 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:37,995 INFO L225 Difference]: With dead ends: 4309 [2021-06-05 07:18:37,995 INFO L226 Difference]: Without dead ends: 4172 [2021-06-05 07:18:37,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1026.3ms TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:18:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-06-05 07:18:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-06-05 07:18:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-06-05 07:18:38,046 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-06-05 07:18:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:38,047 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-06-05 07:18:38,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-06-05 07:18:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:38,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:38,051 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:38,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 07:18:38,051 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash 337262646, now seen corresponding path program 124 times [2021-06-05 07:18:38,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:38,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261539661] [2021-06-05 07:18:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:38,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:38,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261539661] [2021-06-05 07:18:38,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261539661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:38,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:38,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:38,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181641210] [2021-06-05 07:18:38,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:38,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:38,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:38,221 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:39,695 INFO L93 Difference]: Finished difference Result 4287 states and 14068 transitions. [2021-06-05 07:18:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:18:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:39,702 INFO L225 Difference]: With dead ends: 4287 [2021-06-05 07:18:39,702 INFO L226 Difference]: Without dead ends: 4223 [2021-06-05 07:18:39,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 975.9ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:18:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-06-05 07:18:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-06-05 07:18:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-06-05 07:18:39,754 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-06-05 07:18:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:39,754 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-06-05 07:18:39,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-06-05 07:18:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:39,759 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:39,759 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:39,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 07:18:39,759 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:39,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1255746216, now seen corresponding path program 125 times [2021-06-05 07:18:39,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:39,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636938881] [2021-06-05 07:18:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:39,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:39,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636938881] [2021-06-05 07:18:39,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636938881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:39,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:39,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:39,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122293302] [2021-06-05 07:18:39,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:39,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:39,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:39,934 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:41,064 INFO L93 Difference]: Finished difference Result 4192 states and 13816 transitions. [2021-06-05 07:18:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:18:41,064 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:41,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:41,071 INFO L225 Difference]: With dead ends: 4192 [2021-06-05 07:18:41,071 INFO L226 Difference]: Without dead ends: 4137 [2021-06-05 07:18:41,072 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 710.3ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:18:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-06-05 07:18:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-06-05 07:18:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3459741687276723) internal successors, (12176), 3639 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12176 transitions. [2021-06-05 07:18:41,129 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12176 transitions. Word has length 39 [2021-06-05 07:18:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:41,129 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12176 transitions. [2021-06-05 07:18:41,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12176 transitions. [2021-06-05 07:18:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:41,134 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:41,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:41,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 07:18:41,134 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1866568858, now seen corresponding path program 126 times [2021-06-05 07:18:41,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:41,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299784584] [2021-06-05 07:18:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:41,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:41,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299784584] [2021-06-05 07:18:41,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299784584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:41,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:41,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:41,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994276341] [2021-06-05 07:18:41,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:41,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:41,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:41,310 INFO L87 Difference]: Start difference. First operand 3640 states and 12176 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:42,465 INFO L93 Difference]: Finished difference Result 4162 states and 13755 transitions. [2021-06-05 07:18:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:18:42,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:42,473 INFO L225 Difference]: With dead ends: 4162 [2021-06-05 07:18:42,473 INFO L226 Difference]: Without dead ends: 4102 [2021-06-05 07:18:42,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 726.9ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:18:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-05 07:18:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-06-05 07:18:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-06-05 07:18:42,533 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-06-05 07:18:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:42,533 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-06-05 07:18:42,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-06-05 07:18:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:42,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:42,538 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:42,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 07:18:42,539 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash 348831896, now seen corresponding path program 127 times [2021-06-05 07:18:42,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:42,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521294090] [2021-06-05 07:18:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:42,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:42,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521294090] [2021-06-05 07:18:42,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521294090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:42,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:42,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:18:42,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947180781] [2021-06-05 07:18:42,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:18:42,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:42,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:18:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:18:42,699 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:43,692 INFO L93 Difference]: Finished difference Result 4073 states and 13542 transitions. [2021-06-05 07:18:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:18:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:43,699 INFO L225 Difference]: With dead ends: 4073 [2021-06-05 07:18:43,699 INFO L226 Difference]: Without dead ends: 3997 [2021-06-05 07:18:43,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 631.1ms TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:18:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-06-05 07:18:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-06-05 07:18:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3434842249657066) internal successors, (12187), 3645 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12187 transitions. [2021-06-05 07:18:43,748 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12187 transitions. Word has length 39 [2021-06-05 07:18:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:43,749 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12187 transitions. [2021-06-05 07:18:43,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12187 transitions. [2021-06-05 07:18:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:43,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:43,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:43,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 07:18:43,753 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash -669221716, now seen corresponding path program 128 times [2021-06-05 07:18:43,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:43,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539429347] [2021-06-05 07:18:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:43,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:43,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539429347] [2021-06-05 07:18:43,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539429347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:43,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:43,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:43,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213954630] [2021-06-05 07:18:43,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:43,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:43,927 INFO L87 Difference]: Start difference. First operand 3646 states and 12187 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:45,021 INFO L93 Difference]: Finished difference Result 4055 states and 13488 transitions. [2021-06-05 07:18:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:18:45,021 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:45,028 INFO L225 Difference]: With dead ends: 4055 [2021-06-05 07:18:45,028 INFO L226 Difference]: Without dead ends: 3977 [2021-06-05 07:18:45,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 707.5ms TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:18:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-05 07:18:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-06-05 07:18:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.348689655172414) internal successors, (12139), 3625 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-06-05 07:18:45,082 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-06-05 07:18:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:45,082 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-06-05 07:18:45,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-06-05 07:18:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:45,087 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:45,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:45,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 07:18:45,087 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash -479556628, now seen corresponding path program 129 times [2021-06-05 07:18:45,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:45,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655161173] [2021-06-05 07:18:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:45,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:45,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655161173] [2021-06-05 07:18:45,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655161173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:45,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:45,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:45,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504595692] [2021-06-05 07:18:45,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:45,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:45,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:45,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:45,259 INFO L87 Difference]: Start difference. First operand 3626 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:46,830 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-06-05 07:18:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:18:46,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:46,837 INFO L225 Difference]: With dead ends: 4276 [2021-06-05 07:18:46,837 INFO L226 Difference]: Without dead ends: 4170 [2021-06-05 07:18:46,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 963.6ms TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:18:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-06-05 07:18:46,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-06-05 07:18:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-06-05 07:18:46,892 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-06-05 07:18:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:46,893 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-06-05 07:18:46,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-06-05 07:18:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:46,897 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:46,897 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:46,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 07:18:46,897 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:46,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:46,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1974447528, now seen corresponding path program 130 times [2021-06-05 07:18:46,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:46,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466898815] [2021-06-05 07:18:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:47,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:47,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466898815] [2021-06-05 07:18:47,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466898815] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:47,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:47,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:47,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195027614] [2021-06-05 07:18:47,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:47,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:47,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:47,079 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:48,515 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-06-05 07:18:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:18:48,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:48,522 INFO L225 Difference]: With dead ends: 4285 [2021-06-05 07:18:48,522 INFO L226 Difference]: Without dead ends: 4221 [2021-06-05 07:18:48,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 953.2ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:18:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-06-05 07:18:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-06-05 07:18:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-06-05 07:18:48,569 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-06-05 07:18:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:48,569 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-06-05 07:18:48,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-06-05 07:18:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:48,573 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:48,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:48,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 07:18:48,574 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:48,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:48,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1055963958, now seen corresponding path program 131 times [2021-06-05 07:18:48,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:48,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556636061] [2021-06-05 07:18:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:48,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:48,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556636061] [2021-06-05 07:18:48,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556636061] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:48,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:48,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:48,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444288136] [2021-06-05 07:18:48,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:48,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:48,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:48,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:48,744 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:49,783 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-06-05 07:18:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:18:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:49,790 INFO L225 Difference]: With dead ends: 4182 [2021-06-05 07:18:49,790 INFO L226 Difference]: Without dead ends: 4139 [2021-06-05 07:18:49,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 643.2ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:18:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-06-05 07:18:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-06-05 07:18:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.344666849465314) internal successors, (12198), 3647 states have internal predecessors, (12198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-06-05 07:18:49,847 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-06-05 07:18:49,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:49,847 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-06-05 07:18:49,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-06-05 07:18:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:49,852 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:49,852 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:49,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 07:18:49,852 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:49,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1035815224, now seen corresponding path program 132 times [2021-06-05 07:18:49,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:49,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079133827] [2021-06-05 07:18:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:50,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:50,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079133827] [2021-06-05 07:18:50,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079133827] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:50,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:50,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:50,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002609916] [2021-06-05 07:18:50,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:50,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:50,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:50,068 INFO L87 Difference]: Start difference. First operand 3648 states and 12198 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:51,289 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-06-05 07:18:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:18:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:51,296 INFO L225 Difference]: With dead ends: 4151 [2021-06-05 07:18:51,296 INFO L226 Difference]: Without dead ends: 4108 [2021-06-05 07:18:51,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 823.3ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:18:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-05 07:18:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-06-05 07:18:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3455942904199834) internal successors, (12188), 3643 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-06-05 07:18:51,354 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-06-05 07:18:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:51,354 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-06-05 07:18:51,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-06-05 07:18:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:51,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:51,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:51,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 07:18:51,359 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:51,360 INFO L82 PathProgramCache]: Analyzing trace with hash 116688264, now seen corresponding path program 133 times [2021-06-05 07:18:51,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:51,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248505372] [2021-06-05 07:18:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:51,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:51,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248505372] [2021-06-05 07:18:51,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248505372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:51,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:51,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:51,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908277042] [2021-06-05 07:18:51,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:51,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:51,573 INFO L87 Difference]: Start difference. First operand 3644 states and 12188 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:52,656 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-06-05 07:18:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:18:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:52,663 INFO L225 Difference]: With dead ends: 4160 [2021-06-05 07:18:52,663 INFO L226 Difference]: Without dead ends: 4100 [2021-06-05 07:18:52,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 723.2ms TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:18:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-06-05 07:18:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-06-05 07:18:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3460587750617963) internal successors, (12183), 3641 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-06-05 07:18:52,715 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-06-05 07:18:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:52,715 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-06-05 07:18:52,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-06-05 07:18:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:52,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:52,720 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:52,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 07:18:52,720 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1962878278, now seen corresponding path program 134 times [2021-06-05 07:18:52,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:52,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410855274] [2021-06-05 07:18:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:52,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:52,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410855274] [2021-06-05 07:18:52,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410855274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:52,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:52,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:18:52,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383650178] [2021-06-05 07:18:52,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:18:52,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:52,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:18:52,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:18:52,881 INFO L87 Difference]: Start difference. First operand 3642 states and 12183 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:53,813 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-06-05 07:18:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:18:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:53,821 INFO L225 Difference]: With dead ends: 4128 [2021-06-05 07:18:53,821 INFO L226 Difference]: Without dead ends: 4052 [2021-06-05 07:18:53,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 569.4ms TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:18:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-06-05 07:18:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-06-05 07:18:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3431077007399286) internal successors, (12199), 3649 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-06-05 07:18:53,879 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-06-05 07:18:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:53,879 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-06-05 07:18:53,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-06-05 07:18:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:53,884 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:53,885 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:53,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 07:18:53,885 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:53,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1314035406, now seen corresponding path program 135 times [2021-06-05 07:18:53,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:53,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603709502] [2021-06-05 07:18:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:54,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:54,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603709502] [2021-06-05 07:18:54,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603709502] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:54,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:54,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:54,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116531407] [2021-06-05 07:18:54,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:54,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:54,057 INFO L87 Difference]: Start difference. First operand 3650 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:55,070 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-06-05 07:18:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:18:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:55,078 INFO L225 Difference]: With dead ends: 4110 [2021-06-05 07:18:55,078 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 07:18:55,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 635.6ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:18:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 07:18:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-06-05 07:18:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-06-05 07:18:55,135 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-06-05 07:18:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:55,135 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-06-05 07:18:55,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-06-05 07:18:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:55,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:55,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:55,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 07:18:55,140 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash 634844074, now seen corresponding path program 136 times [2021-06-05 07:18:55,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:55,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324694674] [2021-06-05 07:18:55,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:55,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:55,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324694674] [2021-06-05 07:18:55,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324694674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:55,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:55,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:18:55,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156521553] [2021-06-05 07:18:55,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:18:55,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:55,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:18:55,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:18:55,323 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:56,209 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-06-05 07:18:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:18:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:56,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:56,216 INFO L225 Difference]: With dead ends: 4059 [2021-06-05 07:18:56,217 INFO L226 Difference]: Without dead ends: 3983 [2021-06-05 07:18:56,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 567.2ms TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:18:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-06-05 07:18:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-06-05 07:18:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.341237394385391) internal successors, (12259), 3669 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-06-05 07:18:56,281 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-06-05 07:18:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:56,281 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-06-05 07:18:56,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-06-05 07:18:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:56,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:56,286 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:56,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 07:18:56,286 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash -383209538, now seen corresponding path program 137 times [2021-06-05 07:18:56,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:56,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276955605] [2021-06-05 07:18:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:56,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:56,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276955605] [2021-06-05 07:18:56,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276955605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:56,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:56,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:56,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009687633] [2021-06-05 07:18:56,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:56,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:56,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:56,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:56,467 INFO L87 Difference]: Start difference. First operand 3670 states and 12259 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:57,422 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-06-05 07:18:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:18:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:57,429 INFO L225 Difference]: With dead ends: 4041 [2021-06-05 07:18:57,429 INFO L226 Difference]: Without dead ends: 3975 [2021-06-05 07:18:57,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 611.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:18:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-06-05 07:18:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-06-05 07:18:57,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-06-05 07:18:57,486 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-06-05 07:18:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:57,486 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-06-05 07:18:57,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-06-05 07:18:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:57,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:57,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:57,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 07:18:57,491 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash -665475192, now seen corresponding path program 138 times [2021-06-05 07:18:57,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:57,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64307103] [2021-06-05 07:18:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:57,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:57,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64307103] [2021-06-05 07:18:57,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64307103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:57,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:57,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:18:57,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264990268] [2021-06-05 07:18:57,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:18:57,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:18:57,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:18:57,677 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:18:58,658 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-06-05 07:18:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:18:58,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:18:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:18:58,664 INFO L225 Difference]: With dead ends: 4050 [2021-06-05 07:18:58,665 INFO L226 Difference]: Without dead ends: 3888 [2021-06-05 07:18:58,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 614.2ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:18:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-05 07:18:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-06-05 07:18:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3529084330642918) internal successors, (12047), 3593 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-06-05 07:18:58,734 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-06-05 07:18:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:18:58,734 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-06-05 07:18:58,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:18:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-06-05 07:18:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:18:58,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:18:58,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:18:58,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 07:18:58,739 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:18:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:18:58,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1293011068, now seen corresponding path program 139 times [2021-06-05 07:18:58,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:18:58,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762346083] [2021-06-05 07:18:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:18:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:18:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:18:58,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:18:58,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762346083] [2021-06-05 07:18:58,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762346083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:18:58,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:18:58,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:18:58,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171465504] [2021-06-05 07:18:58,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:18:58,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:18:58,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:18:58,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:18:58,933 INFO L87 Difference]: Start difference. First operand 3594 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:00,344 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-06-05 07:19:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:19:00,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:00,351 INFO L225 Difference]: With dead ends: 4277 [2021-06-05 07:19:00,351 INFO L226 Difference]: Without dead ends: 4210 [2021-06-05 07:19:00,352 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 872.9ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:19:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-06-05 07:19:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-06-05 07:19:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-06-05 07:19:00,409 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-06-05 07:19:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:00,409 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-06-05 07:19:00,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-06-05 07:19:00,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:00,413 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:00,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:00,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 07:19:00,413 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:00,414 INFO L82 PathProgramCache]: Analyzing trace with hash -426604902, now seen corresponding path program 140 times [2021-06-05 07:19:00,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:00,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447577833] [2021-06-05 07:19:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:00,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:00,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447577833] [2021-06-05 07:19:00,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447577833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:00,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:00,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:00,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940074250] [2021-06-05 07:19:00,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:00,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:00,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:00,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:00,632 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:02,398 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-06-05 07:19:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:19:02,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:02,405 INFO L225 Difference]: With dead ends: 4414 [2021-06-05 07:19:02,405 INFO L226 Difference]: Without dead ends: 4371 [2021-06-05 07:19:02,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1129.6ms TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:19:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-06-05 07:19:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-06-05 07:19:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.345091605140826) internal successors, (12233), 3657 states have internal predecessors, (12233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-06-05 07:19:02,458 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-06-05 07:19:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:02,458 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-06-05 07:19:02,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-06-05 07:19:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:02,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:02,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:02,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 07:19:02,462 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:02,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2087764092, now seen corresponding path program 141 times [2021-06-05 07:19:02,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:02,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815498371] [2021-06-05 07:19:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:02,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:02,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815498371] [2021-06-05 07:19:02,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815498371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:02,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:02,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:02,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571372937] [2021-06-05 07:19:02,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:02,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:02,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:02,658 INFO L87 Difference]: Start difference. First operand 3658 states and 12233 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:04,373 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-06-05 07:19:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:19:04,373 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:04,382 INFO L225 Difference]: With dead ends: 4345 [2021-06-05 07:19:04,382 INFO L226 Difference]: Without dead ends: 4281 [2021-06-05 07:19:04,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1088.6ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:19:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-06-05 07:19:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-06-05 07:19:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3498213794998626) internal successors, (12190), 3639 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-06-05 07:19:04,469 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-06-05 07:19:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:04,469 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-06-05 07:19:04,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-06-05 07:19:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:04,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:04,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:04,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 07:19:04,474 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:04,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:04,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1586768804, now seen corresponding path program 142 times [2021-06-05 07:19:04,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:04,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784897084] [2021-06-05 07:19:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:04,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:04,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784897084] [2021-06-05 07:19:04,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784897084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:04,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:04,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:04,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513718044] [2021-06-05 07:19:04,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:04,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:04,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:04,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:04,679 INFO L87 Difference]: Start difference. First operand 3640 states and 12190 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:05,940 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-06-05 07:19:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:19:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:05,947 INFO L225 Difference]: With dead ends: 4245 [2021-06-05 07:19:05,947 INFO L226 Difference]: Without dead ends: 4178 [2021-06-05 07:19:05,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 778.9ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:19:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-06-05 07:19:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-06-05 07:19:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-06-05 07:19:05,999 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-06-05 07:19:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:05,999 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-06-05 07:19:05,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-06-05 07:19:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:06,003 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:06,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:06,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 07:19:06,003 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:06,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:06,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1717363652, now seen corresponding path program 143 times [2021-06-05 07:19:06,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:06,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502321879] [2021-06-05 07:19:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:06,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:06,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502321879] [2021-06-05 07:19:06,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502321879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:06,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:06,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:06,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47696469] [2021-06-05 07:19:06,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:06,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:06,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:06,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:06,194 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:07,476 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-06-05 07:19:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:19:07,476 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:07,483 INFO L225 Difference]: With dead ends: 4233 [2021-06-05 07:19:07,483 INFO L226 Difference]: Without dead ends: 4170 [2021-06-05 07:19:07,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 810.8ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:19:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-06-05 07:19:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-06-05 07:19:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-06-05 07:19:07,532 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-06-05 07:19:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:07,532 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-06-05 07:19:07,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-06-05 07:19:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:07,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:07,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:07,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 07:19:07,537 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:07,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1853042244, now seen corresponding path program 144 times [2021-06-05 07:19:07,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:07,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053478084] [2021-06-05 07:19:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:07,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:07,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053478084] [2021-06-05 07:19:07,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053478084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:07,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:07,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:07,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168757027] [2021-06-05 07:19:07,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:07,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:07,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:07,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:07,726 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:09,338 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-06-05 07:19:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 07:19:09,338 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:09,345 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:19:09,345 INFO L226 Difference]: Without dead ends: 4353 [2021-06-05 07:19:09,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1053.7ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:19:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-06-05 07:19:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-06-05 07:19:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-06-05 07:19:09,397 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-06-05 07:19:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:09,397 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-06-05 07:19:09,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-06-05 07:19:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:09,401 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:09,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:09,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 07:19:09,402 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash 661326750, now seen corresponding path program 145 times [2021-06-05 07:19:09,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:09,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16822563] [2021-06-05 07:19:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:09,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:09,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16822563] [2021-06-05 07:19:09,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16822563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:09,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:09,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:09,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298145131] [2021-06-05 07:19:09,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:09,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:09,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:09,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:09,591 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:11,208 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-06-05 07:19:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:19:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:11,215 INFO L225 Difference]: With dead ends: 4384 [2021-06-05 07:19:11,215 INFO L226 Difference]: Without dead ends: 4332 [2021-06-05 07:19:11,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1062.6ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:19:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-06-05 07:19:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-06-05 07:19:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-06-05 07:19:11,263 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-06-05 07:19:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:11,263 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-06-05 07:19:11,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-06-05 07:19:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:11,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:11,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:11,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 07:19:11,267 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash -934558674, now seen corresponding path program 146 times [2021-06-05 07:19:11,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:11,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244063175] [2021-06-05 07:19:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:11,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:11,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244063175] [2021-06-05 07:19:11,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244063175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:11,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:11,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:11,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329815124] [2021-06-05 07:19:11,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:11,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:11,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:11,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:11,456 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:12,764 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-06-05 07:19:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:19:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:12,771 INFO L225 Difference]: With dead ends: 4361 [2021-06-05 07:19:12,771 INFO L226 Difference]: Without dead ends: 4306 [2021-06-05 07:19:12,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 829.4ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:19:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-06-05 07:19:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-06-05 07:19:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.347706673990662) internal successors, (12189), 3641 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-06-05 07:19:12,822 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-06-05 07:19:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:12,822 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-06-05 07:19:12,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-06-05 07:19:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:12,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:12,827 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:12,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 07:19:12,827 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:12,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:12,827 INFO L82 PathProgramCache]: Analyzing trace with hash 238093548, now seen corresponding path program 147 times [2021-06-05 07:19:12,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:12,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767856972] [2021-06-05 07:19:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:13,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:13,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767856972] [2021-06-05 07:19:13,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767856972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:13,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:13,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:13,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097995740] [2021-06-05 07:19:13,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:13,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:13,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:13,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:13,040 INFO L87 Difference]: Start difference. First operand 3642 states and 12189 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:14,243 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-06-05 07:19:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:19:14,243 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:14,250 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:19:14,251 INFO L226 Difference]: Without dead ends: 4250 [2021-06-05 07:19:14,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 776.8ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:19:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-06-05 07:19:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-06-05 07:19:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3462277091906723) internal successors, (12197), 3645 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-06-05 07:19:14,310 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-06-05 07:19:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:14,310 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-06-05 07:19:14,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-06-05 07:19:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:14,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:14,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:14,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 07:19:14,315 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash -9372614, now seen corresponding path program 148 times [2021-06-05 07:19:14,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:14,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015346550] [2021-06-05 07:19:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:14,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:14,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015346550] [2021-06-05 07:19:14,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015346550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:14,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:14,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:14,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210997218] [2021-06-05 07:19:14,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:14,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:14,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:14,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:14,513 INFO L87 Difference]: Start difference. First operand 3646 states and 12197 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:15,781 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-06-05 07:19:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:19:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:15,789 INFO L225 Difference]: With dead ends: 4256 [2021-06-05 07:19:15,789 INFO L226 Difference]: Without dead ends: 4207 [2021-06-05 07:19:15,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 819.7ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:19:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-06-05 07:19:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-06-05 07:19:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 3.3485557083906463) internal successors, (12172), 3635 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-06-05 07:19:15,869 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-06-05 07:19:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:15,869 INFO L482 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-06-05 07:19:15,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-06-05 07:19:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:15,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:15,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:15,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 07:19:15,874 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1529502908, now seen corresponding path program 149 times [2021-06-05 07:19:15,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:15,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520540113] [2021-06-05 07:19:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:16,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:16,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520540113] [2021-06-05 07:19:16,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520540113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:16,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:16,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:16,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018058455] [2021-06-05 07:19:16,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:16,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:16,067 INFO L87 Difference]: Start difference. First operand 3636 states and 12172 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:17,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:17,247 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-06-05 07:19:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:19:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:17,254 INFO L225 Difference]: With dead ends: 4279 [2021-06-05 07:19:17,255 INFO L226 Difference]: Without dead ends: 4212 [2021-06-05 07:19:17,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 688.7ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:19:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-06-05 07:19:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-06-05 07:19:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3414965986394556) internal successors, (12280), 3675 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-06-05 07:19:17,307 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-06-05 07:19:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:17,307 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-06-05 07:19:17,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-06-05 07:19:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:17,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:17,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:17,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 07:19:17,311 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:17,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1398908060, now seen corresponding path program 150 times [2021-06-05 07:19:17,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:17,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627645421] [2021-06-05 07:19:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:17,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:17,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627645421] [2021-06-05 07:19:17,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627645421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:17,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:17,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:17,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700534745] [2021-06-05 07:19:17,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:17,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:17,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:17,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:17,500 INFO L87 Difference]: Start difference. First operand 3676 states and 12280 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:18,742 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-06-05 07:19:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:19:18,742 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:18,749 INFO L225 Difference]: With dead ends: 4267 [2021-06-05 07:19:18,749 INFO L226 Difference]: Without dead ends: 4204 [2021-06-05 07:19:18,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 702.1ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:19:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-06-05 07:19:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-06-05 07:19:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.342241614398691) internal successors, (12256), 3667 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-06-05 07:19:18,800 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-06-05 07:19:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:18,800 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-06-05 07:19:18,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-06-05 07:19:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:18,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:18,805 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:18,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 07:19:18,805 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:18,805 INFO L82 PathProgramCache]: Analyzing trace with hash 869007612, now seen corresponding path program 151 times [2021-06-05 07:19:18,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:18,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934113265] [2021-06-05 07:19:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:18,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:18,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934113265] [2021-06-05 07:19:18,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934113265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:18,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:18,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:18,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957783580] [2021-06-05 07:19:18,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:18,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:18,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:18,995 INFO L87 Difference]: Start difference. First operand 3668 states and 12256 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:20,177 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-06-05 07:19:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:19:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:20,184 INFO L225 Difference]: With dead ends: 4279 [2021-06-05 07:19:20,184 INFO L226 Difference]: Without dead ends: 4140 [2021-06-05 07:19:20,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 682.4ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:19:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-06-05 07:19:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-06-05 07:19:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.34716459197787) internal successors, (12100), 3615 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-06-05 07:19:20,234 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-06-05 07:19:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:20,234 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-06-05 07:19:20,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-06-05 07:19:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:20,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:20,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:20,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 07:19:20,238 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:20,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:20,238 INFO L82 PathProgramCache]: Analyzing trace with hash -508920310, now seen corresponding path program 152 times [2021-06-05 07:19:20,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:20,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480086971] [2021-06-05 07:19:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:20,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:20,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480086971] [2021-06-05 07:19:20,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480086971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:20,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:20,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:20,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586927226] [2021-06-05 07:19:20,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:20,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:20,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:20,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:20,439 INFO L87 Difference]: Start difference. First operand 3616 states and 12100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:21,464 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-06-05 07:19:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:19:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:21,489 INFO L225 Difference]: With dead ends: 4091 [2021-06-05 07:19:21,489 INFO L226 Difference]: Without dead ends: 4024 [2021-06-05 07:19:21,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 657.2ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:19:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-05 07:19:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-06-05 07:19:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3367875647668392) internal successors, (12236), 3667 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-06-05 07:19:21,535 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-06-05 07:19:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:21,535 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-06-05 07:19:21,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-06-05 07:19:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:21,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:21,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:21,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 07:19:21,539 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:21,540 INFO L82 PathProgramCache]: Analyzing trace with hash -681063528, now seen corresponding path program 153 times [2021-06-05 07:19:21,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:21,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609567658] [2021-06-05 07:19:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:21,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:21,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609567658] [2021-06-05 07:19:21,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609567658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:21,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:21,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:21,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478122950] [2021-06-05 07:19:21,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:21,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:21,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:21,726 INFO L87 Difference]: Start difference. First operand 3668 states and 12236 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:22,780 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-06-05 07:19:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:19:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:22,787 INFO L225 Difference]: With dead ends: 4079 [2021-06-05 07:19:22,787 INFO L226 Difference]: Without dead ends: 4016 [2021-06-05 07:19:22,787 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 667.4ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:19:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-06-05 07:19:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-06-05 07:19:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.337523913637606) internal successors, (12212), 3659 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-06-05 07:19:22,844 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-06-05 07:19:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:22,844 INFO L482 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-06-05 07:19:22,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-06-05 07:19:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:22,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:22,849 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:22,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 07:19:22,849 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:22,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1811069612, now seen corresponding path program 154 times [2021-06-05 07:19:22,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:22,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746420611] [2021-06-05 07:19:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:23,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:23,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746420611] [2021-06-05 07:19:23,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746420611] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:23,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:23,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:19:23,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149016415] [2021-06-05 07:19:23,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:19:23,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:19:23,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:19:23,041 INFO L87 Difference]: Start difference. First operand 3660 states and 12212 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:24,094 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-06-05 07:19:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:19:24,094 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:24,101 INFO L225 Difference]: With dead ends: 4079 [2021-06-05 07:19:24,101 INFO L226 Difference]: Without dead ends: 3936 [2021-06-05 07:19:24,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 666.3ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:19:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-06-05 07:19:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-06-05 07:19:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3607 states have (on average 3.349043526476296) internal successors, (12080), 3607 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-06-05 07:19:24,184 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-06-05 07:19:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:24,184 INFO L482 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-06-05 07:19:24,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-06-05 07:19:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:24,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:24,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:24,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 07:19:24,189 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash 439883512, now seen corresponding path program 155 times [2021-06-05 07:19:24,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:24,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437934683] [2021-06-05 07:19:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:24,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:24,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437934683] [2021-06-05 07:19:24,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437934683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:24,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:24,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:24,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419960230] [2021-06-05 07:19:24,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:24,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:24,378 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:25,663 INFO L93 Difference]: Finished difference Result 4203 states and 13971 transitions. [2021-06-05 07:19:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:19:25,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:25,670 INFO L225 Difference]: With dead ends: 4203 [2021-06-05 07:19:25,670 INFO L226 Difference]: Without dead ends: 4136 [2021-06-05 07:19:25,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 786.7ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:19:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-06-05 07:19:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3696. [2021-06-05 07:19:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 3.349120433017591) internal successors, (12375), 3695 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 12375 transitions. [2021-06-05 07:19:25,731 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 12375 transitions. Word has length 39 [2021-06-05 07:19:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:25,731 INFO L482 AbstractCegarLoop]: Abstraction has 3696 states and 12375 transitions. [2021-06-05 07:19:25,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 12375 transitions. [2021-06-05 07:19:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:25,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:25,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:25,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 07:19:25,736 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1279732458, now seen corresponding path program 156 times [2021-06-05 07:19:25,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:25,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746960714] [2021-06-05 07:19:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:25,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:25,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746960714] [2021-06-05 07:19:25,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746960714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:25,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:25,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:25,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403264851] [2021-06-05 07:19:25,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:25,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:25,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:25,909 INFO L87 Difference]: Start difference. First operand 3696 states and 12375 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:27,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:27,604 INFO L93 Difference]: Finished difference Result 4340 states and 14328 transitions. [2021-06-05 07:19:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:19:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:27,612 INFO L225 Difference]: With dead ends: 4340 [2021-06-05 07:19:27,612 INFO L226 Difference]: Without dead ends: 4297 [2021-06-05 07:19:27,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1082.1ms TimeCoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:19:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2021-06-05 07:19:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3702. [2021-06-05 07:19:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.347203458524723) internal successors, (12388), 3701 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12388 transitions. [2021-06-05 07:19:27,674 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12388 transitions. Word has length 39 [2021-06-05 07:19:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:27,674 INFO L482 AbstractCegarLoop]: Abstraction has 3702 states and 12388 transitions. [2021-06-05 07:19:27,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12388 transitions. [2021-06-05 07:19:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:27,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:27,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:27,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 07:19:27,679 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1234636536, now seen corresponding path program 157 times [2021-06-05 07:19:27,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:27,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501178470] [2021-06-05 07:19:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:27,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:27,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501178470] [2021-06-05 07:19:27,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501178470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:27,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:27,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:27,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292810523] [2021-06-05 07:19:27,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:27,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:27,850 INFO L87 Difference]: Start difference. First operand 3702 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:29,477 INFO L93 Difference]: Finished difference Result 4271 states and 14148 transitions. [2021-06-05 07:19:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:19:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:29,484 INFO L225 Difference]: With dead ends: 4271 [2021-06-05 07:19:29,484 INFO L226 Difference]: Without dead ends: 4207 [2021-06-05 07:19:29,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1033.3ms TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:19:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-06-05 07:19:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3684. [2021-06-05 07:19:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3518870486016836) internal successors, (12345), 3683 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12345 transitions. [2021-06-05 07:19:29,537 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12345 transitions. Word has length 39 [2021-06-05 07:19:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:29,537 INFO L482 AbstractCegarLoop]: Abstraction has 3684 states and 12345 transitions. [2021-06-05 07:19:29,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12345 transitions. [2021-06-05 07:19:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:29,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:29,542 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:29,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 07:19:29,542 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1855070936, now seen corresponding path program 158 times [2021-06-05 07:19:29,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:29,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474315601] [2021-06-05 07:19:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:29,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:29,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474315601] [2021-06-05 07:19:29,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474315601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:29,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:29,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:29,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104864667] [2021-06-05 07:19:29,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:29,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:29,715 INFO L87 Difference]: Start difference. First operand 3684 states and 12345 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:30,827 INFO L93 Difference]: Finished difference Result 4183 states and 13899 transitions. [2021-06-05 07:19:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:19:30,828 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:30,834 INFO L225 Difference]: With dead ends: 4183 [2021-06-05 07:19:30,834 INFO L226 Difference]: Without dead ends: 4116 [2021-06-05 07:19:30,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 682.2ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:19:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-06-05 07:19:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3712. [2021-06-05 07:19:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-06-05 07:19:30,889 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-06-05 07:19:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:30,889 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-06-05 07:19:30,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-06-05 07:19:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:30,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:30,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:30,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 07:19:30,893 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1724476088, now seen corresponding path program 159 times [2021-06-05 07:19:30,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:30,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952070555] [2021-06-05 07:19:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:31,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:31,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952070555] [2021-06-05 07:19:31,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952070555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:31,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:31,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:31,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682378839] [2021-06-05 07:19:31,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:31,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:31,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:31,071 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:32,191 INFO L93 Difference]: Finished difference Result 4171 states and 13859 transitions. [2021-06-05 07:19:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:19:32,192 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:32,199 INFO L225 Difference]: With dead ends: 4171 [2021-06-05 07:19:32,199 INFO L226 Difference]: Without dead ends: 4108 [2021-06-05 07:19:32,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 698.0ms TimeCoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:19:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-05 07:19:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3704. [2021-06-05 07:19:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-06-05 07:19:32,258 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-06-05 07:19:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:32,258 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-06-05 07:19:32,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-06-05 07:19:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:32,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:32,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:32,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 07:19:32,263 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1588797496, now seen corresponding path program 160 times [2021-06-05 07:19:32,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:32,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712029681] [2021-06-05 07:19:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:32,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:32,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712029681] [2021-06-05 07:19:32,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712029681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:32,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:32,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:32,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847907448] [2021-06-05 07:19:32,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:32,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:32,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:32,438 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:33,963 INFO L93 Difference]: Finished difference Result 4334 states and 14248 transitions. [2021-06-05 07:19:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:19:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:33,970 INFO L225 Difference]: With dead ends: 4334 [2021-06-05 07:19:33,970 INFO L226 Difference]: Without dead ends: 4291 [2021-06-05 07:19:33,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1009.1ms TimeCoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:19:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-06-05 07:19:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3712. [2021-06-05 07:19:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-06-05 07:19:34,030 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-06-05 07:19:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:34,030 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-06-05 07:19:34,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-06-05 07:19:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:34,036 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:34,036 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:34,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 07:19:34,036 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash -191800806, now seen corresponding path program 161 times [2021-06-05 07:19:34,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:34,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536448697] [2021-06-05 07:19:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:34,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:34,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536448697] [2021-06-05 07:19:34,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536448697] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:34,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:34,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:34,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816691140] [2021-06-05 07:19:34,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:34,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:34,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:34,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:34,207 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:35,722 INFO L93 Difference]: Finished difference Result 4322 states and 14210 transitions. [2021-06-05 07:19:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:19:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:35,729 INFO L225 Difference]: With dead ends: 4322 [2021-06-05 07:19:35,729 INFO L226 Difference]: Without dead ends: 4270 [2021-06-05 07:19:35,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 998.1ms TimeCoverageRelationStatistics Valid=315, Invalid=2991, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:19:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-05 07:19:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3704. [2021-06-05 07:19:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-06-05 07:19:35,783 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-06-05 07:19:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:35,783 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-06-05 07:19:35,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:35,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-06-05 07:19:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:35,788 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:35,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:35,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 07:19:35,788 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1787686230, now seen corresponding path program 162 times [2021-06-05 07:19:35,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:35,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830003716] [2021-06-05 07:19:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:35,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:35,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830003716] [2021-06-05 07:19:35,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830003716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:35,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:35,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:35,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244812700] [2021-06-05 07:19:35,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:35,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:35,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:35,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:35,956 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:37,167 INFO L93 Difference]: Finished difference Result 4299 states and 14133 transitions. [2021-06-05 07:19:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:19:37,168 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:37,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:37,174 INFO L225 Difference]: With dead ends: 4299 [2021-06-05 07:19:37,174 INFO L226 Difference]: Without dead ends: 4244 [2021-06-05 07:19:37,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 767.9ms TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:19:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-06-05 07:19:37,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3706. [2021-06-05 07:19:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3489878542510123) internal successors, (12408), 3705 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12408 transitions. [2021-06-05 07:19:37,227 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12408 transitions. Word has length 39 [2021-06-05 07:19:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:37,227 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12408 transitions. [2021-06-05 07:19:37,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12408 transitions. [2021-06-05 07:19:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:37,231 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:37,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:37,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 07:19:37,232 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:37,232 INFO L82 PathProgramCache]: Analyzing trace with hash -615034008, now seen corresponding path program 163 times [2021-06-05 07:19:37,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:37,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497750416] [2021-06-05 07:19:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:37,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:37,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497750416] [2021-06-05 07:19:37,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497750416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:37,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:37,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:37,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928719149] [2021-06-05 07:19:37,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:37,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:37,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:37,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:37,405 INFO L87 Difference]: Start difference. First operand 3706 states and 12408 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:38,568 INFO L93 Difference]: Finished difference Result 4234 states and 13981 transitions. [2021-06-05 07:19:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:19:38,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:38,575 INFO L225 Difference]: With dead ends: 4234 [2021-06-05 07:19:38,575 INFO L226 Difference]: Without dead ends: 4188 [2021-06-05 07:19:38,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 707.5ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:19:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-06-05 07:19:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3710. [2021-06-05 07:19:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3475330277702886) internal successors, (12416), 3709 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12416 transitions. [2021-06-05 07:19:38,630 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12416 transitions. Word has length 39 [2021-06-05 07:19:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:38,630 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12416 transitions. [2021-06-05 07:19:38,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12416 transitions. [2021-06-05 07:19:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:38,635 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:38,635 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:38,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 07:19:38,635 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:38,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:38,636 INFO L82 PathProgramCache]: Analyzing trace with hash -862500170, now seen corresponding path program 164 times [2021-06-05 07:19:38,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:38,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505206153] [2021-06-05 07:19:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:38,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:38,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505206153] [2021-06-05 07:19:38,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505206153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:38,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:38,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:38,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467407461] [2021-06-05 07:19:38,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:38,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:38,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:38,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:38,842 INFO L87 Difference]: Start difference. First operand 3710 states and 12416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:40,270 INFO L93 Difference]: Finished difference Result 4341 states and 14308 transitions. [2021-06-05 07:19:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:19:40,270 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:40,277 INFO L225 Difference]: With dead ends: 4341 [2021-06-05 07:19:40,277 INFO L226 Difference]: Without dead ends: 4277 [2021-06-05 07:19:40,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 966.8ms TimeCoverageRelationStatistics Valid=293, Invalid=2677, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:19:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-06-05 07:19:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3760. [2021-06-05 07:19:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3759 states have (on average 3.346368715083799) internal successors, (12579), 3759 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 12579 transitions. [2021-06-05 07:19:40,329 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 12579 transitions. Word has length 39 [2021-06-05 07:19:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:40,329 INFO L482 AbstractCegarLoop]: Abstraction has 3760 states and 12579 transitions. [2021-06-05 07:19:40,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 12579 transitions. [2021-06-05 07:19:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:40,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:40,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:40,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 07:19:40,334 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:40,334 INFO L82 PathProgramCache]: Analyzing trace with hash 676375352, now seen corresponding path program 165 times [2021-06-05 07:19:40,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:40,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442238439] [2021-06-05 07:19:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:40,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:40,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442238439] [2021-06-05 07:19:40,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442238439] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:40,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:40,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:40,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350917217] [2021-06-05 07:19:40,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:40,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:40,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:40,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:40,505 INFO L87 Difference]: Start difference. First operand 3760 states and 12579 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:41,561 INFO L93 Difference]: Finished difference Result 4215 states and 14023 transitions. [2021-06-05 07:19:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:19:41,561 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:41,568 INFO L225 Difference]: With dead ends: 4215 [2021-06-05 07:19:41,568 INFO L226 Difference]: Without dead ends: 4148 [2021-06-05 07:19:41,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 611.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:19:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-06-05 07:19:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3800. [2021-06-05 07:19:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3799 states have (on average 3.339563042906028) internal successors, (12687), 3799 states have internal predecessors, (12687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 12687 transitions. [2021-06-05 07:19:41,623 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 12687 transitions. Word has length 39 [2021-06-05 07:19:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:41,623 INFO L482 AbstractCegarLoop]: Abstraction has 3800 states and 12687 transitions. [2021-06-05 07:19:41,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 12687 transitions. [2021-06-05 07:19:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:41,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:41,627 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:41,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 07:19:41,628 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash 545780504, now seen corresponding path program 166 times [2021-06-05 07:19:41,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:41,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054574400] [2021-06-05 07:19:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:41,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:41,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054574400] [2021-06-05 07:19:41,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054574400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:41,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:41,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:41,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713366863] [2021-06-05 07:19:41,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:41,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:41,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:41,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:41,797 INFO L87 Difference]: Start difference. First operand 3800 states and 12687 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:42,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:42,872 INFO L93 Difference]: Finished difference Result 4203 states and 13983 transitions. [2021-06-05 07:19:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:19:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:42,879 INFO L225 Difference]: With dead ends: 4203 [2021-06-05 07:19:42,879 INFO L226 Difference]: Without dead ends: 4140 [2021-06-05 07:19:42,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 618.2ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:19:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-06-05 07:19:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3792. [2021-06-05 07:19:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3791 states have (on average 3.340279609601688) internal successors, (12663), 3791 states have internal predecessors, (12663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 12663 transitions. [2021-06-05 07:19:42,934 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 12663 transitions. Word has length 39 [2021-06-05 07:19:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:42,934 INFO L482 AbstractCegarLoop]: Abstraction has 3792 states and 12663 transitions. [2021-06-05 07:19:42,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 12663 transitions. [2021-06-05 07:19:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:42,939 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:42,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:42,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 07:19:42,939 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 15880056, now seen corresponding path program 167 times [2021-06-05 07:19:42,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:42,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294764042] [2021-06-05 07:19:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:43,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:43,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294764042] [2021-06-05 07:19:43,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294764042] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:43,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:43,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:43,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084854771] [2021-06-05 07:19:43,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:43,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:43,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:43,139 INFO L87 Difference]: Start difference. First operand 3792 states and 12663 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:44,261 INFO L93 Difference]: Finished difference Result 4227 states and 14043 transitions. [2021-06-05 07:19:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:19:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:44,268 INFO L225 Difference]: With dead ends: 4227 [2021-06-05 07:19:44,268 INFO L226 Difference]: Without dead ends: 4104 [2021-06-05 07:19:44,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 672.9ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:19:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2021-06-05 07:19:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3744. [2021-06-05 07:19:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 3.347314987977558) internal successors, (12529), 3743 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 12529 transitions. [2021-06-05 07:19:44,318 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 12529 transitions. Word has length 39 [2021-06-05 07:19:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:44,318 INFO L482 AbstractCegarLoop]: Abstraction has 3744 states and 12529 transitions. [2021-06-05 07:19:44,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 12529 transitions. [2021-06-05 07:19:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:44,323 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:44,323 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:44,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 07:19:44,323 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:44,323 INFO L82 PathProgramCache]: Analyzing trace with hash -702531114, now seen corresponding path program 168 times [2021-06-05 07:19:44,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:44,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066863325] [2021-06-05 07:19:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:44,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:44,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066863325] [2021-06-05 07:19:44,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066863325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:44,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:44,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:44,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918555454] [2021-06-05 07:19:44,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:44,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:44,489 INFO L87 Difference]: Start difference. First operand 3744 states and 12529 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:46,480 INFO L93 Difference]: Finished difference Result 6362 states and 21428 transitions. [2021-06-05 07:19:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 07:19:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:46,492 INFO L225 Difference]: With dead ends: 6362 [2021-06-05 07:19:46,492 INFO L226 Difference]: Without dead ends: 6319 [2021-06-05 07:19:46,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1185.2ms TimeCoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:19:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2021-06-05 07:19:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 3972. [2021-06-05 07:19:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 3.3598589775875096) internal successors, (13342), 3971 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 13342 transitions. [2021-06-05 07:19:46,569 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 13342 transitions. Word has length 39 [2021-06-05 07:19:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:46,569 INFO L482 AbstractCegarLoop]: Abstraction has 3972 states and 13342 transitions. [2021-06-05 07:19:46,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 13342 transitions. [2021-06-05 07:19:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:46,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:46,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:46,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 07:19:46,575 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:46,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1811837880, now seen corresponding path program 169 times [2021-06-05 07:19:46,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:46,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93875921] [2021-06-05 07:19:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:46,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:46,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93875921] [2021-06-05 07:19:46,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93875921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:46,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:46,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:46,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323582147] [2021-06-05 07:19:46,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:46,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:46,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:46,790 INFO L87 Difference]: Start difference. First operand 3972 states and 13342 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:49,135 INFO L93 Difference]: Finished difference Result 7267 states and 24502 transitions. [2021-06-05 07:19:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 07:19:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:49,148 INFO L225 Difference]: With dead ends: 7267 [2021-06-05 07:19:49,148 INFO L226 Difference]: Without dead ends: 7215 [2021-06-05 07:19:49,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1422.1ms TimeCoverageRelationStatistics Valid=448, Invalid=5102, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 07:19:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7215 states. [2021-06-05 07:19:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7215 to 3942. [2021-06-05 07:19:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3941 states have (on average 3.3613296117736615) internal successors, (13247), 3941 states have internal predecessors, (13247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 13247 transitions. [2021-06-05 07:19:49,221 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 13247 transitions. Word has length 39 [2021-06-05 07:19:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:49,221 INFO L482 AbstractCegarLoop]: Abstraction has 3942 states and 13247 transitions. [2021-06-05 07:19:49,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 13247 transitions. [2021-06-05 07:19:49,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:49,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:49,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:49,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 07:19:49,226 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash 215952456, now seen corresponding path program 170 times [2021-06-05 07:19:49,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:49,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947749018] [2021-06-05 07:19:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:49,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:49,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947749018] [2021-06-05 07:19:49,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947749018] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:49,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:49,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:49,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74201812] [2021-06-05 07:19:49,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:49,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:49,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:49,397 INFO L87 Difference]: Start difference. First operand 3942 states and 13247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:50,851 INFO L93 Difference]: Finished difference Result 6269 states and 21030 transitions. [2021-06-05 07:19:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:19:50,851 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:50,862 INFO L225 Difference]: With dead ends: 6269 [2021-06-05 07:19:50,862 INFO L226 Difference]: Without dead ends: 6214 [2021-06-05 07:19:50,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 777.7ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:19:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-06-05 07:19:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 4147. [2021-06-05 07:19:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 3.3779546550892428) internal successors, (14005), 4146 states have internal predecessors, (14005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 14005 transitions. [2021-06-05 07:19:50,931 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 14005 transitions. Word has length 39 [2021-06-05 07:19:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:50,931 INFO L482 AbstractCegarLoop]: Abstraction has 4147 states and 14005 transitions. [2021-06-05 07:19:50,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 14005 transitions. [2021-06-05 07:19:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:50,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:50,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:50,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 07:19:50,937 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1388604678, now seen corresponding path program 171 times [2021-06-05 07:19:50,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:50,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113387340] [2021-06-05 07:19:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:51,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:51,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113387340] [2021-06-05 07:19:51,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113387340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:51,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:51,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:51,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919748568] [2021-06-05 07:19:51,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:51,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:51,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:51,117 INFO L87 Difference]: Start difference. First operand 4147 states and 14005 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:52,864 INFO L93 Difference]: Finished difference Result 7174 states and 24108 transitions. [2021-06-05 07:19:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 07:19:52,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:52,876 INFO L225 Difference]: With dead ends: 7174 [2021-06-05 07:19:52,876 INFO L226 Difference]: Without dead ends: 7114 [2021-06-05 07:19:52,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 946.7ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:19:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2021-06-05 07:19:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4145. [2021-06-05 07:19:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.3783783783783785) internal successors, (14000), 4144 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14000 transitions. [2021-06-05 07:19:52,948 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14000 transitions. Word has length 39 [2021-06-05 07:19:52,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:52,948 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 14000 transitions. [2021-06-05 07:19:52,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14000 transitions. [2021-06-05 07:19:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:52,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:52,953 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:52,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 07:19:52,954 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash -488798924, now seen corresponding path program 172 times [2021-06-05 07:19:52,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:52,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873644606] [2021-06-05 07:19:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:53,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:53,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873644606] [2021-06-05 07:19:53,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873644606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:53,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:53,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:53,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237959197] [2021-06-05 07:19:53,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:53,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:53,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:53,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:53,147 INFO L87 Difference]: Start difference. First operand 4145 states and 14000 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:54,545 INFO L93 Difference]: Finished difference Result 6238 states and 20984 transitions. [2021-06-05 07:19:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:19:54,545 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:54,557 INFO L225 Difference]: With dead ends: 6238 [2021-06-05 07:19:54,557 INFO L226 Difference]: Without dead ends: 6147 [2021-06-05 07:19:54,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 766.6ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:19:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2021-06-05 07:19:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 4145. [2021-06-05 07:19:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.376930501930502) internal successors, (13994), 4144 states have internal predecessors, (13994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 13994 transitions. [2021-06-05 07:19:54,636 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 13994 transitions. Word has length 39 [2021-06-05 07:19:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:54,636 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 13994 transitions. [2021-06-05 07:19:54,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 13994 transitions. [2021-06-05 07:19:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:54,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:54,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:54,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 07:19:54,642 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:54,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:54,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1991281130, now seen corresponding path program 173 times [2021-06-05 07:19:54,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:54,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461764833] [2021-06-05 07:19:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:54,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:54,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461764833] [2021-06-05 07:19:54,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461764833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:54,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:54,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:19:54,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190177517] [2021-06-05 07:19:54,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:19:54,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:54,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:19:54,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:19:54,817 INFO L87 Difference]: Start difference. First operand 4145 states and 13994 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:56,600 INFO L93 Difference]: Finished difference Result 7326 states and 24599 transitions. [2021-06-05 07:19:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:19:56,600 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:56,613 INFO L225 Difference]: With dead ends: 7326 [2021-06-05 07:19:56,613 INFO L226 Difference]: Without dead ends: 7147 [2021-06-05 07:19:56,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 930.2ms TimeCoverageRelationStatistics Valid=290, Invalid=3016, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:19:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2021-06-05 07:19:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 4326. [2021-06-05 07:19:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3784971098265895) internal successors, (14612), 4325 states have internal predecessors, (14612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14612 transitions. [2021-06-05 07:19:56,700 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14612 transitions. Word has length 39 [2021-06-05 07:19:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:56,700 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14612 transitions. [2021-06-05 07:19:56,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14612 transitions. [2021-06-05 07:19:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:56,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:56,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:56,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 07:19:56,706 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:56,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1457358134, now seen corresponding path program 174 times [2021-06-05 07:19:56,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:56,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618477727] [2021-06-05 07:19:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:56,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:56,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618477727] [2021-06-05 07:19:56,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618477727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:56,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:56,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:19:56,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977907407] [2021-06-05 07:19:56,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:19:56,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:19:56,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:19:56,874 INFO L87 Difference]: Start difference. First operand 4326 states and 14612 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:57,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:57,938 INFO L93 Difference]: Finished difference Result 4703 states and 15805 transitions. [2021-06-05 07:19:57,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:19:57,938 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:57,946 INFO L225 Difference]: With dead ends: 4703 [2021-06-05 07:19:57,946 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 07:19:57,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 668.5ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:19:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 07:19:57,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4338. [2021-06-05 07:19:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3751441088309893) internal successors, (14638), 4337 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14638 transitions. [2021-06-05 07:19:58,009 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14638 transitions. Word has length 39 [2021-06-05 07:19:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:58,009 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 14638 transitions. [2021-06-05 07:19:58,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14638 transitions. [2021-06-05 07:19:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:58,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:58,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:58,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 07:19:58,014 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:58,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1117993192, now seen corresponding path program 175 times [2021-06-05 07:19:58,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:58,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609892742] [2021-06-05 07:19:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:58,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:58,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609892742] [2021-06-05 07:19:58,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609892742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:58,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:58,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:19:58,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387578618] [2021-06-05 07:19:58,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:19:58,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:58,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:19:58,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:19:58,167 INFO L87 Difference]: Start difference. First operand 4338 states and 14638 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:19:59,663 INFO L93 Difference]: Finished difference Result 4752 states and 15968 transitions. [2021-06-05 07:19:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:19:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:19:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:19:59,671 INFO L225 Difference]: With dead ends: 4752 [2021-06-05 07:19:59,671 INFO L226 Difference]: Without dead ends: 4691 [2021-06-05 07:19:59,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 975.8ms TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:19:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-06-05 07:19:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4326. [2021-06-05 07:19:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3757225433526012) internal successors, (14600), 4325 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14600 transitions. [2021-06-05 07:19:59,739 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14600 transitions. Word has length 39 [2021-06-05 07:19:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:19:59,739 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14600 transitions. [2021-06-05 07:19:59,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:19:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14600 transitions. [2021-06-05 07:19:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:19:59,745 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:19:59,745 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:19:59,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 07:19:59,745 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:19:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:19:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1071420726, now seen corresponding path program 176 times [2021-06-05 07:19:59,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:19:59,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513533371] [2021-06-05 07:19:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:19:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:19:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:19:59,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:19:59,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513533371] [2021-06-05 07:19:59,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513533371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:19:59,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:19:59,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:19:59,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418124922] [2021-06-05 07:19:59,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:19:59,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:19:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:19:59,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:19:59,905 INFO L87 Difference]: Start difference. First operand 4326 states and 14600 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:01,353 INFO L93 Difference]: Finished difference Result 4727 states and 15862 transitions. [2021-06-05 07:20:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:20:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:01,360 INFO L225 Difference]: With dead ends: 4727 [2021-06-05 07:20:01,360 INFO L226 Difference]: Without dead ends: 4597 [2021-06-05 07:20:01,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 904.6ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:20:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2021-06-05 07:20:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4302. [2021-06-05 07:20:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.377819111834457) internal successors, (14528), 4301 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14528 transitions. [2021-06-05 07:20:01,419 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14528 transitions. Word has length 39 [2021-06-05 07:20:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:01,419 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 14528 transitions. [2021-06-05 07:20:01,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14528 transitions. [2021-06-05 07:20:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:01,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:01,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:01,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 07:20:01,424 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash 766531126, now seen corresponding path program 177 times [2021-06-05 07:20:01,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:01,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578318728] [2021-06-05 07:20:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:01,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:01,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578318728] [2021-06-05 07:20:01,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578318728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:01,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:01,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:01,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797903879] [2021-06-05 07:20:01,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:01,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:01,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:01,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:01,605 INFO L87 Difference]: Start difference. First operand 4302 states and 14528 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:02,875 INFO L93 Difference]: Finished difference Result 4711 states and 15809 transitions. [2021-06-05 07:20:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:20:02,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:02,884 INFO L225 Difference]: With dead ends: 4711 [2021-06-05 07:20:02,884 INFO L226 Difference]: Without dead ends: 4644 [2021-06-05 07:20:02,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 815.1ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:20:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-06-05 07:20:02,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4302. [2021-06-05 07:20:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.375029063008603) internal successors, (14516), 4301 states have internal predecessors, (14516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14516 transitions. [2021-06-05 07:20:02,955 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14516 transitions. Word has length 39 [2021-06-05 07:20:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:02,955 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 14516 transitions. [2021-06-05 07:20:02,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:02,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14516 transitions. [2021-06-05 07:20:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:02,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:02,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:02,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 07:20:02,961 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash -953084844, now seen corresponding path program 178 times [2021-06-05 07:20:02,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:02,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562120387] [2021-06-05 07:20:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:03,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:03,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562120387] [2021-06-05 07:20:03,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562120387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:03,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:03,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:03,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035957821] [2021-06-05 07:20:03,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:03,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:03,134 INFO L87 Difference]: Start difference. First operand 4302 states and 14516 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:04,818 INFO L93 Difference]: Finished difference Result 4799 states and 16051 transitions. [2021-06-05 07:20:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:20:04,819 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:04,827 INFO L225 Difference]: With dead ends: 4799 [2021-06-05 07:20:04,827 INFO L226 Difference]: Without dead ends: 4738 [2021-06-05 07:20:04,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 1117.2ms TimeCoverageRelationStatistics Valid=345, Invalid=3437, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:20:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-06-05 07:20:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4290. [2021-06-05 07:20:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.377477267428305) internal successors, (14486), 4289 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14486 transitions. [2021-06-05 07:20:04,900 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14486 transitions. Word has length 39 [2021-06-05 07:20:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:04,900 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 14486 transitions. [2021-06-05 07:20:04,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14486 transitions. [2021-06-05 07:20:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:04,906 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:04,906 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:04,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 07:20:04,906 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:04,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2113248746, now seen corresponding path program 179 times [2021-06-05 07:20:04,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:04,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960489246] [2021-06-05 07:20:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:05,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:05,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960489246] [2021-06-05 07:20:05,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960489246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:05,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:05,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:05,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135256041] [2021-06-05 07:20:05,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:05,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:05,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:05,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:05,081 INFO L87 Difference]: Start difference. First operand 4290 states and 14486 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:06,117 INFO L93 Difference]: Finished difference Result 4597 states and 15444 transitions. [2021-06-05 07:20:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:20:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:06,124 INFO L225 Difference]: With dead ends: 4597 [2021-06-05 07:20:06,125 INFO L226 Difference]: Without dead ends: 4530 [2021-06-05 07:20:06,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 662.2ms TimeCoverageRelationStatistics Valid=205, Invalid=1775, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:20:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2021-06-05 07:20:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 4298. [2021-06-05 07:20:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.3749127298114963) internal successors, (14502), 4297 states have internal predecessors, (14502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 14502 transitions. [2021-06-05 07:20:06,185 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 14502 transitions. Word has length 39 [2021-06-05 07:20:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:06,185 INFO L482 AbstractCegarLoop]: Abstraction has 4298 states and 14502 transitions. [2021-06-05 07:20:06,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 14502 transitions. [2021-06-05 07:20:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:06,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:06,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:06,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 07:20:06,191 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:06,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2051123702, now seen corresponding path program 180 times [2021-06-05 07:20:06,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:06,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291244789] [2021-06-05 07:20:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:06,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:06,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291244789] [2021-06-05 07:20:06,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291244789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:06,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:06,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:06,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922942503] [2021-06-05 07:20:06,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:06,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:06,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:06,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:06,370 INFO L87 Difference]: Start difference. First operand 4298 states and 14502 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:07,520 INFO L93 Difference]: Finished difference Result 4585 states and 15404 transitions. [2021-06-05 07:20:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:20:07,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:07,528 INFO L225 Difference]: With dead ends: 4585 [2021-06-05 07:20:07,528 INFO L226 Difference]: Without dead ends: 4522 [2021-06-05 07:20:07,528 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 682.3ms TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:20:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2021-06-05 07:20:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4290. [2021-06-05 07:20:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.376544649102355) internal successors, (14482), 4289 states have internal predecessors, (14482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14482 transitions. [2021-06-05 07:20:07,593 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14482 transitions. Word has length 39 [2021-06-05 07:20:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:07,593 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 14482 transitions. [2021-06-05 07:20:07,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14482 transitions. [2021-06-05 07:20:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:07,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:07,599 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:07,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 07:20:07,599 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:07,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1915445110, now seen corresponding path program 181 times [2021-06-05 07:20:07,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:07,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745704125] [2021-06-05 07:20:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:07,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:07,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745704125] [2021-06-05 07:20:07,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745704125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:07,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:07,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:07,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231153288] [2021-06-05 07:20:07,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:07,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:07,808 INFO L87 Difference]: Start difference. First operand 4290 states and 14482 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:09,253 INFO L93 Difference]: Finished difference Result 4691 states and 15658 transitions. [2021-06-05 07:20:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:20:09,253 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:09,261 INFO L225 Difference]: With dead ends: 4691 [2021-06-05 07:20:09,262 INFO L226 Difference]: Without dead ends: 4642 [2021-06-05 07:20:09,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 998.2ms TimeCoverageRelationStatistics Valid=302, Invalid=2778, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:20:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2021-06-05 07:20:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4284. [2021-06-05 07:20:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.3777725893065607) internal successors, (14467), 4283 states have internal predecessors, (14467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14467 transitions. [2021-06-05 07:20:09,332 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14467 transitions. Word has length 39 [2021-06-05 07:20:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:09,332 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 14467 transitions. [2021-06-05 07:20:09,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14467 transitions. [2021-06-05 07:20:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:09,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:09,338 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:09,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 07:20:09,338 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1461038616, now seen corresponding path program 182 times [2021-06-05 07:20:09,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:09,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117510214] [2021-06-05 07:20:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:09,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:09,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117510214] [2021-06-05 07:20:09,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117510214] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:09,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:09,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:09,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140401671] [2021-06-05 07:20:09,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:09,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:09,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:09,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:09,515 INFO L87 Difference]: Start difference. First operand 4284 states and 14467 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:10,622 INFO L93 Difference]: Finished difference Result 4619 states and 15474 transitions. [2021-06-05 07:20:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:20:10,623 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:10,630 INFO L225 Difference]: With dead ends: 4619 [2021-06-05 07:20:10,630 INFO L226 Difference]: Without dead ends: 4564 [2021-06-05 07:20:10,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 704.8ms TimeCoverageRelationStatistics Valid=225, Invalid=1937, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:20:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-06-05 07:20:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4284. [2021-06-05 07:20:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.377305626897035) internal successors, (14465), 4283 states have internal predecessors, (14465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14465 transitions. [2021-06-05 07:20:10,684 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14465 transitions. Word has length 39 [2021-06-05 07:20:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:10,684 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 14465 transitions. [2021-06-05 07:20:10,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14465 transitions. [2021-06-05 07:20:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:10,689 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:10,689 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:10,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 07:20:10,689 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:10,689 INFO L82 PathProgramCache]: Analyzing trace with hash -288386394, now seen corresponding path program 183 times [2021-06-05 07:20:10,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:10,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061107568] [2021-06-05 07:20:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:10,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:10,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061107568] [2021-06-05 07:20:10,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061107568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:10,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:10,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:10,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834561299] [2021-06-05 07:20:10,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:10,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:10,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:10,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:10,880 INFO L87 Difference]: Start difference. First operand 4284 states and 14465 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:11,913 INFO L93 Difference]: Finished difference Result 4562 states and 15342 transitions. [2021-06-05 07:20:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:20:11,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:11,921 INFO L225 Difference]: With dead ends: 4562 [2021-06-05 07:20:11,921 INFO L226 Difference]: Without dead ends: 4506 [2021-06-05 07:20:11,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 678.5ms TimeCoverageRelationStatistics Valid=211, Invalid=1769, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:20:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-06-05 07:20:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4274. [2021-06-05 07:20:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 3.3802948747952257) internal successors, (14444), 4273 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 14444 transitions. [2021-06-05 07:20:11,986 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 14444 transitions. Word has length 39 [2021-06-05 07:20:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:11,986 INFO L482 AbstractCegarLoop]: Abstraction has 4274 states and 14444 transitions. [2021-06-05 07:20:11,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 14444 transitions. [2021-06-05 07:20:11,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:11,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:11,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:11,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 07:20:11,992 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:11,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1953661928, now seen corresponding path program 184 times [2021-06-05 07:20:11,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:11,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857088536] [2021-06-05 07:20:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:12,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:12,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857088536] [2021-06-05 07:20:12,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857088536] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:12,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:12,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:12,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581261262] [2021-06-05 07:20:12,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:12,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:12,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:12,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:12,164 INFO L87 Difference]: Start difference. First operand 4274 states and 14444 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:13,832 INFO L93 Difference]: Finished difference Result 4832 states and 16094 transitions. [2021-06-05 07:20:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:20:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:13,840 INFO L225 Difference]: With dead ends: 4832 [2021-06-05 07:20:13,840 INFO L226 Difference]: Without dead ends: 4695 [2021-06-05 07:20:13,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1064.7ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:20:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-06-05 07:20:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4278. [2021-06-05 07:20:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-06-05 07:20:13,899 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-06-05 07:20:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:13,899 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-06-05 07:20:13,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-06-05 07:20:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:13,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:13,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:13,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 07:20:13,905 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:13,905 INFO L82 PathProgramCache]: Analyzing trace with hash 458771028, now seen corresponding path program 185 times [2021-06-05 07:20:13,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:13,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673353598] [2021-06-05 07:20:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:14,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:14,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673353598] [2021-06-05 07:20:14,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673353598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:14,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:14,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:14,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689453336] [2021-06-05 07:20:14,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:14,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:14,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:14,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:14,080 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:15,552 INFO L93 Difference]: Finished difference Result 4810 states and 15960 transitions. [2021-06-05 07:20:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:20:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:15,559 INFO L225 Difference]: With dead ends: 4810 [2021-06-05 07:20:15,560 INFO L226 Difference]: Without dead ends: 4746 [2021-06-05 07:20:15,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 982.9ms TimeCoverageRelationStatistics Valid=293, Invalid=2787, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:20:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-06-05 07:20:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4278. [2021-06-05 07:20:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-06-05 07:20:15,619 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-06-05 07:20:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:15,619 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-06-05 07:20:15,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-06-05 07:20:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:15,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:15,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:15,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 07:20:15,624 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1377254598, now seen corresponding path program 186 times [2021-06-05 07:20:15,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:15,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911188000] [2021-06-05 07:20:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:15,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:15,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911188000] [2021-06-05 07:20:15,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911188000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:15,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:15,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:15,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667065453] [2021-06-05 07:20:15,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:15,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:15,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:15,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:15,798 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:16,914 INFO L93 Difference]: Finished difference Result 4716 states and 15712 transitions. [2021-06-05 07:20:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:20:16,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:16,922 INFO L225 Difference]: With dead ends: 4716 [2021-06-05 07:20:16,923 INFO L226 Difference]: Without dead ends: 4661 [2021-06-05 07:20:16,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 700.6ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:20:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-06-05 07:20:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4280. [2021-06-05 07:20:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 3.378593129235803) internal successors, (14457), 4279 states have internal predecessors, (14457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 14457 transitions. [2021-06-05 07:20:16,984 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 14457 transitions. Word has length 39 [2021-06-05 07:20:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:16,984 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 14457 transitions. [2021-06-05 07:20:16,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 14457 transitions. [2021-06-05 07:20:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:16,989 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:16,989 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:16,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 07:20:16,989 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:16,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1745060476, now seen corresponding path program 187 times [2021-06-05 07:20:16,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:16,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681652521] [2021-06-05 07:20:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:17,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:17,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681652521] [2021-06-05 07:20:17,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681652521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:17,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:17,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:17,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060766419] [2021-06-05 07:20:17,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:17,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:17,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:17,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:17,162 INFO L87 Difference]: Start difference. First operand 4280 states and 14457 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:18,304 INFO L93 Difference]: Finished difference Result 4686 states and 15651 transitions. [2021-06-05 07:20:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:20:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:18,312 INFO L225 Difference]: With dead ends: 4686 [2021-06-05 07:20:18,312 INFO L226 Difference]: Without dead ends: 4626 [2021-06-05 07:20:18,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 745.3ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:20:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2021-06-05 07:20:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4278. [2021-06-05 07:20:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.3790039747486555) internal successors, (14452), 4277 states have internal predecessors, (14452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14452 transitions. [2021-06-05 07:20:18,375 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14452 transitions. Word has length 39 [2021-06-05 07:20:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:18,375 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14452 transitions. [2021-06-05 07:20:18,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14452 transitions. [2021-06-05 07:20:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:18,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:18,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:18,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 07:20:18,381 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:18,381 INFO L82 PathProgramCache]: Analyzing trace with hash 470340278, now seen corresponding path program 188 times [2021-06-05 07:20:18,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:18,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926395394] [2021-06-05 07:20:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:18,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:18,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926395394] [2021-06-05 07:20:18,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926395394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:18,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:18,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:20:18,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414874134] [2021-06-05 07:20:18,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:20:18,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:18,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:20:18,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:20:18,538 INFO L87 Difference]: Start difference. First operand 4278 states and 14452 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:19,511 INFO L93 Difference]: Finished difference Result 4597 states and 15438 transitions. [2021-06-05 07:20:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:20:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:19,519 INFO L225 Difference]: With dead ends: 4597 [2021-06-05 07:20:19,519 INFO L226 Difference]: Without dead ends: 4521 [2021-06-05 07:20:19,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 617.1ms TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:20:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-06-05 07:20:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4286. [2021-06-05 07:20:19,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.3764294049008168) internal successors, (14468), 4285 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 14468 transitions. [2021-06-05 07:20:19,581 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 14468 transitions. Word has length 39 [2021-06-05 07:20:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:19,581 INFO L482 AbstractCegarLoop]: Abstraction has 4286 states and 14468 transitions. [2021-06-05 07:20:19,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 14468 transitions. [2021-06-05 07:20:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:19,587 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:19,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:19,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 07:20:19,587 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:19,587 INFO L82 PathProgramCache]: Analyzing trace with hash -547713334, now seen corresponding path program 189 times [2021-06-05 07:20:19,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:19,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695270656] [2021-06-05 07:20:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:19,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:19,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695270656] [2021-06-05 07:20:19,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695270656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:19,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:19,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:19,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190983293] [2021-06-05 07:20:19,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:19,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:19,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:19,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:19,758 INFO L87 Difference]: Start difference. First operand 4286 states and 14468 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:20,815 INFO L93 Difference]: Finished difference Result 4579 states and 15384 transitions. [2021-06-05 07:20:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:20:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:20,823 INFO L225 Difference]: With dead ends: 4579 [2021-06-05 07:20:20,824 INFO L226 Difference]: Without dead ends: 4501 [2021-06-05 07:20:20,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 675.7ms TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:20:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-06-05 07:20:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4266. [2021-06-05 07:20:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4265 states have (on average 3.381008206330598) internal successors, (14420), 4265 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 14420 transitions. [2021-06-05 07:20:20,948 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 14420 transitions. Word has length 39 [2021-06-05 07:20:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:20,948 INFO L482 AbstractCegarLoop]: Abstraction has 4266 states and 14420 transitions. [2021-06-05 07:20:20,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 14420 transitions. [2021-06-05 07:20:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:20,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:20,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:20,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 07:20:20,954 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash -358048246, now seen corresponding path program 190 times [2021-06-05 07:20:20,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:20,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979020805] [2021-06-05 07:20:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:21,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:21,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979020805] [2021-06-05 07:20:21,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979020805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:21,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:21,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:21,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800362564] [2021-06-05 07:20:21,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:21,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:21,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:21,154 INFO L87 Difference]: Start difference. First operand 4266 states and 14420 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:22,690 INFO L93 Difference]: Finished difference Result 4817 states and 16072 transitions. [2021-06-05 07:20:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:20:22,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:22,698 INFO L225 Difference]: With dead ends: 4817 [2021-06-05 07:20:22,698 INFO L226 Difference]: Without dead ends: 4711 [2021-06-05 07:20:22,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 973.3ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:20:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-05 07:20:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4288. [2021-06-05 07:20:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 3.3813855843247027) internal successors, (14496), 4287 states have internal predecessors, (14496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 14496 transitions. [2021-06-05 07:20:22,758 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 14496 transitions. Word has length 39 [2021-06-05 07:20:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:22,758 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 14496 transitions. [2021-06-05 07:20:22,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 14496 transitions. [2021-06-05 07:20:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:22,764 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:22,764 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:22,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 07:20:22,764 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1852939146, now seen corresponding path program 191 times [2021-06-05 07:20:22,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:22,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738232543] [2021-06-05 07:20:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:22,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:22,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738232543] [2021-06-05 07:20:22,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738232543] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:22,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:22,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:22,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903777928] [2021-06-05 07:20:22,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:22,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:22,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:22,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:22,933 INFO L87 Difference]: Start difference. First operand 4288 states and 14496 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:24,356 INFO L93 Difference]: Finished difference Result 4854 states and 16096 transitions. [2021-06-05 07:20:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:20:24,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:24,364 INFO L225 Difference]: With dead ends: 4854 [2021-06-05 07:20:24,364 INFO L226 Difference]: Without dead ends: 4790 [2021-06-05 07:20:24,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 947.3ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:20:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-06-05 07:20:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4304. [2021-06-05 07:20:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380897048570765) internal successors, (14548), 4303 states have internal predecessors, (14548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14548 transitions. [2021-06-05 07:20:24,429 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14548 transitions. Word has length 39 [2021-06-05 07:20:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:24,429 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14548 transitions. [2021-06-05 07:20:24,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14548 transitions. [2021-06-05 07:20:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:24,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:24,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:24,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 07:20:24,435 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:24,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:24,435 INFO L82 PathProgramCache]: Analyzing trace with hash -934455576, now seen corresponding path program 192 times [2021-06-05 07:20:24,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:24,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362118079] [2021-06-05 07:20:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:24,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:24,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362118079] [2021-06-05 07:20:24,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362118079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:24,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:24,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:24,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104707484] [2021-06-05 07:20:24,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:24,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:24,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:24,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:24,609 INFO L87 Difference]: Start difference. First operand 4304 states and 14548 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:25,666 INFO L93 Difference]: Finished difference Result 4752 states and 15828 transitions. [2021-06-05 07:20:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:20:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:25,675 INFO L225 Difference]: With dead ends: 4752 [2021-06-05 07:20:25,675 INFO L226 Difference]: Without dead ends: 4709 [2021-06-05 07:20:25,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 663.1ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:20:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2021-06-05 07:20:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4310. [2021-06-05 07:20:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 3.379206312369459) internal successors, (14561), 4309 states have internal predecessors, (14561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 14561 transitions. [2021-06-05 07:20:25,745 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 14561 transitions. Word has length 39 [2021-06-05 07:20:25,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:25,745 INFO L482 AbstractCegarLoop]: Abstraction has 4310 states and 14561 transitions. [2021-06-05 07:20:25,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 14561 transitions. [2021-06-05 07:20:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:25,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:25,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:25,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 07:20:25,752 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash -914306842, now seen corresponding path program 193 times [2021-06-05 07:20:25,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:25,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336588132] [2021-06-05 07:20:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:25,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:25,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336588132] [2021-06-05 07:20:25,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336588132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:25,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:25,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:25,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847930568] [2021-06-05 07:20:25,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:25,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:25,929 INFO L87 Difference]: Start difference. First operand 4310 states and 14561 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:27,115 INFO L93 Difference]: Finished difference Result 4723 states and 15772 transitions. [2021-06-05 07:20:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:20:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:27,122 INFO L225 Difference]: With dead ends: 4723 [2021-06-05 07:20:27,123 INFO L226 Difference]: Without dead ends: 4680 [2021-06-05 07:20:27,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 790.5ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:20:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2021-06-05 07:20:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4306. [2021-06-05 07:20:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 3.3800232288037164) internal successors, (14551), 4305 states have internal predecessors, (14551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 14551 transitions. [2021-06-05 07:20:27,178 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 14551 transitions. Word has length 39 [2021-06-05 07:20:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:27,178 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 14551 transitions. [2021-06-05 07:20:27,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 14551 transitions. [2021-06-05 07:20:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:27,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:27,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:27,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 07:20:27,183 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash 238196646, now seen corresponding path program 194 times [2021-06-05 07:20:27,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:27,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899702900] [2021-06-05 07:20:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:27,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:27,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899702900] [2021-06-05 07:20:27,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899702900] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:27,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:27,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:27,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873994003] [2021-06-05 07:20:27,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:27,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:27,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:27,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:27,353 INFO L87 Difference]: Start difference. First operand 4306 states and 14551 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:28,452 INFO L93 Difference]: Finished difference Result 4730 states and 15787 transitions. [2021-06-05 07:20:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:20:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:28,463 INFO L225 Difference]: With dead ends: 4730 [2021-06-05 07:20:28,463 INFO L226 Difference]: Without dead ends: 4670 [2021-06-05 07:20:28,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 698.7ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:20:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-06-05 07:20:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4304. [2021-06-05 07:20:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380432256565187) internal successors, (14546), 4303 states have internal predecessors, (14546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14546 transitions. [2021-06-05 07:20:28,548 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14546 transitions. Word has length 39 [2021-06-05 07:20:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:28,548 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14546 transitions. [2021-06-05 07:20:28,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14546 transitions. [2021-06-05 07:20:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:28,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:28,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:28,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 07:20:28,555 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1841369896, now seen corresponding path program 195 times [2021-06-05 07:20:28,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:28,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021638773] [2021-06-05 07:20:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:28,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:28,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021638773] [2021-06-05 07:20:28,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021638773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:28,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:28,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:20:28,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760321957] [2021-06-05 07:20:28,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:20:28,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:28,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:20:28,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:20:28,713 INFO L87 Difference]: Start difference. First operand 4304 states and 14546 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:29,643 INFO L93 Difference]: Finished difference Result 4698 states and 15727 transitions. [2021-06-05 07:20:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:20:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:29,651 INFO L225 Difference]: With dead ends: 4698 [2021-06-05 07:20:29,651 INFO L226 Difference]: Without dead ends: 4622 [2021-06-05 07:20:29,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 590.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:20:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-06-05 07:20:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4312. [2021-06-05 07:20:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4311 states have (on average 3.3778705636743216) internal successors, (14562), 4311 states have internal predecessors, (14562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 14562 transitions. [2021-06-05 07:20:29,716 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 14562 transitions. Word has length 39 [2021-06-05 07:20:29,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:29,716 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 14562 transitions. [2021-06-05 07:20:29,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 14562 transitions. [2021-06-05 07:20:29,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:29,722 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:29,722 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:29,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 07:20:29,722 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:29,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1435543788, now seen corresponding path program 196 times [2021-06-05 07:20:29,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:29,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658175320] [2021-06-05 07:20:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:29,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:29,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658175320] [2021-06-05 07:20:29,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658175320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:29,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:29,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:29,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494864618] [2021-06-05 07:20:29,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:29,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:29,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:29,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:29,895 INFO L87 Difference]: Start difference. First operand 4312 states and 14562 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:30,914 INFO L93 Difference]: Finished difference Result 4680 states and 15673 transitions. [2021-06-05 07:20:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:20:30,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:30,922 INFO L225 Difference]: With dead ends: 4680 [2021-06-05 07:20:30,922 INFO L226 Difference]: Without dead ends: 4610 [2021-06-05 07:20:30,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 646.1ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:20:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-06-05 07:20:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4300. [2021-06-05 07:20:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-06-05 07:20:30,983 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-06-05 07:20:30,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:30,983 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-06-05 07:20:30,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-06-05 07:20:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:30,988 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:30,989 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:30,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 07:20:30,989 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:30,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2013239828, now seen corresponding path program 197 times [2021-06-05 07:20:30,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:30,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331040658] [2021-06-05 07:20:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:31,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:31,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331040658] [2021-06-05 07:20:31,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331040658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:31,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:31,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:31,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663087356] [2021-06-05 07:20:31,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:31,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:31,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:31,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:31,160 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:33,061 INFO L93 Difference]: Finished difference Result 6858 states and 23172 transitions. [2021-06-05 07:20:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 07:20:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:33,073 INFO L225 Difference]: With dead ends: 6858 [2021-06-05 07:20:33,073 INFO L226 Difference]: Without dead ends: 6815 [2021-06-05 07:20:33,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1145.9ms TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:20:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-06-05 07:20:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4326. [2021-06-05 07:20:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3796531791907514) internal successors, (14617), 4325 states have internal predecessors, (14617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14617 transitions. [2021-06-05 07:20:33,147 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14617 transitions. Word has length 39 [2021-06-05 07:20:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:33,148 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14617 transitions. [2021-06-05 07:20:33,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14617 transitions. [2021-06-05 07:20:33,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:33,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:33,153 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:33,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 07:20:33,153 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash 501129166, now seen corresponding path program 198 times [2021-06-05 07:20:33,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:33,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000223395] [2021-06-05 07:20:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:33,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:33,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000223395] [2021-06-05 07:20:33,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000223395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:33,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:33,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:33,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800135261] [2021-06-05 07:20:33,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:33,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:33,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:33,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:33,335 INFO L87 Difference]: Start difference. First operand 4326 states and 14617 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:35,557 INFO L93 Difference]: Finished difference Result 7715 states and 26114 transitions. [2021-06-05 07:20:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 07:20:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:35,571 INFO L225 Difference]: With dead ends: 7715 [2021-06-05 07:20:35,571 INFO L226 Difference]: Without dead ends: 7663 [2021-06-05 07:20:35,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1341.7ms TimeCoverageRelationStatistics Valid=429, Invalid=4827, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 07:20:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2021-06-05 07:20:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 4300. [2021-06-05 07:20:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-06-05 07:20:35,648 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-06-05 07:20:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:35,648 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-06-05 07:20:35,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-06-05 07:20:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:35,653 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:35,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:35,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 07:20:35,653 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1094756258, now seen corresponding path program 199 times [2021-06-05 07:20:35,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:35,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842270532] [2021-06-05 07:20:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:35,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:35,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842270532] [2021-06-05 07:20:35,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842270532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:35,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:35,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:35,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387193731] [2021-06-05 07:20:35,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:35,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:35,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:35,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:35,822 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:37,121 INFO L93 Difference]: Finished difference Result 6351 states and 21238 transitions. [2021-06-05 07:20:37,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:20:37,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:37,132 INFO L225 Difference]: With dead ends: 6351 [2021-06-05 07:20:37,132 INFO L226 Difference]: Without dead ends: 6296 [2021-06-05 07:20:37,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 712.3ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:20:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-06-05 07:20:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 4320. [2021-06-05 07:20:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4319 states have (on average 3.3804121324380643) internal successors, (14600), 4319 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 14600 transitions. [2021-06-05 07:20:37,208 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 14600 transitions. Word has length 39 [2021-06-05 07:20:37,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:37,208 INFO L482 AbstractCegarLoop]: Abstraction has 4320 states and 14600 transitions. [2021-06-05 07:20:37,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 14600 transitions. [2021-06-05 07:20:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:37,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:37,214 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:37,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 07:20:37,214 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:37,214 INFO L82 PathProgramCache]: Analyzing trace with hash 77895964, now seen corresponding path program 200 times [2021-06-05 07:20:37,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:37,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087781058] [2021-06-05 07:20:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:37,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:37,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087781058] [2021-06-05 07:20:37,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087781058] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:37,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:37,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:37,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615307268] [2021-06-05 07:20:37,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:37,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:37,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:37,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:37,398 INFO L87 Difference]: Start difference. First operand 4320 states and 14600 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:39,102 INFO L93 Difference]: Finished difference Result 7052 states and 23686 transitions. [2021-06-05 07:20:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:20:39,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:39,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:39,114 INFO L225 Difference]: With dead ends: 7052 [2021-06-05 07:20:39,114 INFO L226 Difference]: Without dead ends: 6992 [2021-06-05 07:20:39,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 945.0ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:20:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2021-06-05 07:20:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 4318. [2021-06-05 07:20:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3808200138985405) internal successors, (14595), 4317 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14595 transitions. [2021-06-05 07:20:39,193 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14595 transitions. Word has length 39 [2021-06-05 07:20:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:39,193 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14595 transitions. [2021-06-05 07:20:39,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14595 transitions. [2021-06-05 07:20:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:39,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:39,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:39,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 07:20:39,199 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1799507638, now seen corresponding path program 201 times [2021-06-05 07:20:39,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:39,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399878395] [2021-06-05 07:20:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:39,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:39,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399878395] [2021-06-05 07:20:39,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399878395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:39,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:39,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402567533] [2021-06-05 07:20:39,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:39,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:39,378 INFO L87 Difference]: Start difference. First operand 4318 states and 14595 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:40,673 INFO L93 Difference]: Finished difference Result 6272 states and 21064 transitions. [2021-06-05 07:20:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:20:40,673 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:40,684 INFO L225 Difference]: With dead ends: 6272 [2021-06-05 07:20:40,684 INFO L226 Difference]: Without dead ends: 6181 [2021-06-05 07:20:40,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 709.0ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:20:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-06-05 07:20:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4318. [2021-06-05 07:20:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3794301598332175) internal successors, (14589), 4317 states have internal predecessors, (14589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14589 transitions. [2021-06-05 07:20:40,754 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14589 transitions. Word has length 39 [2021-06-05 07:20:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:40,754 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14589 transitions. [2021-06-05 07:20:40,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14589 transitions. [2021-06-05 07:20:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:40,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:40,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:40,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 07:20:40,760 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:40,760 INFO L82 PathProgramCache]: Analyzing trace with hash 992977452, now seen corresponding path program 202 times [2021-06-05 07:20:40,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:40,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486594941] [2021-06-05 07:20:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:40,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:40,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486594941] [2021-06-05 07:20:40,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486594941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:40,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:40,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:40,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262537539] [2021-06-05 07:20:40,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:40,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:40,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:40,934 INFO L87 Difference]: Start difference. First operand 4318 states and 14589 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:42,691 INFO L93 Difference]: Finished difference Result 7142 states and 24051 transitions. [2021-06-05 07:20:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:20:42,691 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:42,703 INFO L225 Difference]: With dead ends: 7142 [2021-06-05 07:20:42,703 INFO L226 Difference]: Without dead ends: 7042 [2021-06-05 07:20:42,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 947.8ms TimeCoverageRelationStatistics Valid=303, Invalid=3119, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:20:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-06-05 07:20:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 4300. [2021-06-05 07:20:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3793905559432424) internal successors, (14528), 4299 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14528 transitions. [2021-06-05 07:20:42,777 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14528 transitions. Word has length 39 [2021-06-05 07:20:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:42,777 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14528 transitions. [2021-06-05 07:20:42,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14528 transitions. [2021-06-05 07:20:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:42,782 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:42,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:42,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 07:20:42,783 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash 756352456, now seen corresponding path program 203 times [2021-06-05 07:20:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:42,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972781778] [2021-06-05 07:20:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:42,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:42,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972781778] [2021-06-05 07:20:42,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972781778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:42,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:42,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 07:20:42,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485205689] [2021-06-05 07:20:42,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:20:42,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:42,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:20:42,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:20:42,939 INFO L87 Difference]: Start difference. First operand 4300 states and 14528 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:43,816 INFO L93 Difference]: Finished difference Result 4629 states and 15530 transitions. [2021-06-05 07:20:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:20:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:43,824 INFO L225 Difference]: With dead ends: 4629 [2021-06-05 07:20:43,824 INFO L226 Difference]: Without dead ends: 4553 [2021-06-05 07:20:43,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 530.8ms TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:20:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2021-06-05 07:20:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4332. [2021-06-05 07:20:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4331 states have (on average 3.3747402447471715) internal successors, (14616), 4331 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 14616 transitions. [2021-06-05 07:20:43,883 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 14616 transitions. Word has length 39 [2021-06-05 07:20:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:43,883 INFO L482 AbstractCegarLoop]: Abstraction has 4332 states and 14616 transitions. [2021-06-05 07:20:43,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 14616 transitions. [2021-06-05 07:20:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:43,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:43,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:43,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 07:20:43,889 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:43,889 INFO L82 PathProgramCache]: Analyzing trace with hash -261701156, now seen corresponding path program 204 times [2021-06-05 07:20:43,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:43,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514521348] [2021-06-05 07:20:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:44,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:44,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514521348] [2021-06-05 07:20:44,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514521348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:44,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:44,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:44,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452250478] [2021-06-05 07:20:44,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:44,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:44,079 INFO L87 Difference]: Start difference. First operand 4332 states and 14616 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:45,034 INFO L93 Difference]: Finished difference Result 4611 states and 15476 transitions. [2021-06-05 07:20:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:20:45,034 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:45,042 INFO L225 Difference]: With dead ends: 4611 [2021-06-05 07:20:45,042 INFO L226 Difference]: Without dead ends: 4545 [2021-06-05 07:20:45,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 617.5ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:20:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-06-05 07:20:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4324. [2021-06-05 07:20:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 3.375433726578765) internal successors, (14592), 4323 states have internal predecessors, (14592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 14592 transitions. [2021-06-05 07:20:45,102 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 14592 transitions. Word has length 39 [2021-06-05 07:20:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:45,102 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 14592 transitions. [2021-06-05 07:20:45,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 14592 transitions. [2021-06-05 07:20:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:45,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:45,108 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:45,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 07:20:45,108 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash -543966810, now seen corresponding path program 205 times [2021-06-05 07:20:45,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:45,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450885607] [2021-06-05 07:20:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:45,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:45,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450885607] [2021-06-05 07:20:45,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450885607] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:45,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:45,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:20:45,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879065791] [2021-06-05 07:20:45,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:20:45,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:20:45,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:20:45,294 INFO L87 Difference]: Start difference. First operand 4324 states and 14592 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:46,276 INFO L93 Difference]: Finished difference Result 4632 states and 15529 transitions. [2021-06-05 07:20:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:20:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:46,284 INFO L225 Difference]: With dead ends: 4632 [2021-06-05 07:20:46,285 INFO L226 Difference]: Without dead ends: 4470 [2021-06-05 07:20:46,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 624.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:20:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-06-05 07:20:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4256. [2021-06-05 07:20:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.38331374853114) internal successors, (14396), 4255 states have internal predecessors, (14396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14396 transitions. [2021-06-05 07:20:46,351 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14396 transitions. Word has length 39 [2021-06-05 07:20:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:46,351 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14396 transitions. [2021-06-05 07:20:46,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14396 transitions. [2021-06-05 07:20:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:46,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:46,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:46,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 07:20:46,358 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:46,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1485490904, now seen corresponding path program 206 times [2021-06-05 07:20:46,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:46,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310496155] [2021-06-05 07:20:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:46,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:46,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310496155] [2021-06-05 07:20:46,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310496155] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:46,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:46,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:46,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546902289] [2021-06-05 07:20:46,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:46,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:46,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:46,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:46,552 INFO L87 Difference]: Start difference. First operand 4256 states and 14396 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:47,897 INFO L93 Difference]: Finished difference Result 4789 states and 16030 transitions. [2021-06-05 07:20:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:20:47,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:47,905 INFO L225 Difference]: With dead ends: 4789 [2021-06-05 07:20:47,905 INFO L226 Difference]: Without dead ends: 4722 [2021-06-05 07:20:47,906 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 821.5ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:20:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2021-06-05 07:20:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4264. [2021-06-05 07:20:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-06-05 07:20:47,966 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-06-05 07:20:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:47,966 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-06-05 07:20:47,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-06-05 07:20:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:47,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:47,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:47,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 07:20:47,971 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:47,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:47,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1354896056, now seen corresponding path program 207 times [2021-06-05 07:20:47,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:47,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468244830] [2021-06-05 07:20:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:48,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:48,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468244830] [2021-06-05 07:20:48,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468244830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:48,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:48,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:48,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818580547] [2021-06-05 07:20:48,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:48,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:48,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:48,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:48,179 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:49,491 INFO L93 Difference]: Finished difference Result 4721 states and 15834 transitions. [2021-06-05 07:20:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:20:49,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:49,499 INFO L225 Difference]: With dead ends: 4721 [2021-06-05 07:20:49,499 INFO L226 Difference]: Without dead ends: 4658 [2021-06-05 07:20:49,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 825.0ms TimeCoverageRelationStatistics Valid=264, Invalid=2388, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:20:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-06-05 07:20:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4256. [2021-06-05 07:20:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-06-05 07:20:49,563 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-06-05 07:20:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:49,563 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-06-05 07:20:49,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-06-05 07:20:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:49,568 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:49,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:49,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 07:20:49,568 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:49,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:49,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1219217464, now seen corresponding path program 208 times [2021-06-05 07:20:49,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:49,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114685259] [2021-06-05 07:20:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:49,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:49,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114685259] [2021-06-05 07:20:49,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114685259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:49,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:49,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:49,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248675139] [2021-06-05 07:20:49,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:49,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:49,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:49,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:49,755 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:51,609 INFO L93 Difference]: Finished difference Result 4967 states and 16467 transitions. [2021-06-05 07:20:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 07:20:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:51,618 INFO L225 Difference]: With dead ends: 4967 [2021-06-05 07:20:51,618 INFO L226 Difference]: Without dead ends: 4924 [2021-06-05 07:20:51,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1204.5ms TimeCoverageRelationStatistics Valid=386, Invalid=4036, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:20:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-06-05 07:20:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4264. [2021-06-05 07:20:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-06-05 07:20:51,686 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-06-05 07:20:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:51,686 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-06-05 07:20:51,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-06-05 07:20:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:51,692 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:51,692 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:51,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 07:20:51,693 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash -561380838, now seen corresponding path program 209 times [2021-06-05 07:20:51,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:51,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270980349] [2021-06-05 07:20:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:51,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:51,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270980349] [2021-06-05 07:20:51,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270980349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:51,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:51,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:51,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079515736] [2021-06-05 07:20:51,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:51,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:51,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:51,878 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:53,665 INFO L93 Difference]: Finished difference Result 4923 states and 16349 transitions. [2021-06-05 07:20:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:20:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:53,673 INFO L225 Difference]: With dead ends: 4923 [2021-06-05 07:20:53,673 INFO L226 Difference]: Without dead ends: 4871 [2021-06-05 07:20:53,673 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1162.1ms TimeCoverageRelationStatistics Valid=376, Invalid=3914, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:20:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-06-05 07:20:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4256. [2021-06-05 07:20:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-06-05 07:20:53,734 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-06-05 07:20:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:53,734 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-06-05 07:20:53,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-06-05 07:20:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:53,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:53,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:53,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 07:20:53,740 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2137701034, now seen corresponding path program 210 times [2021-06-05 07:20:53,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:53,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92810445] [2021-06-05 07:20:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:53,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:53,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92810445] [2021-06-05 07:20:53,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92810445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:53,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:53,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:53,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343597644] [2021-06-05 07:20:53,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:53,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:53,927 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:55,318 INFO L93 Difference]: Finished difference Result 4849 states and 16108 transitions. [2021-06-05 07:20:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:20:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:55,326 INFO L225 Difference]: With dead ends: 4849 [2021-06-05 07:20:55,327 INFO L226 Difference]: Without dead ends: 4794 [2021-06-05 07:20:55,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 877.0ms TimeCoverageRelationStatistics Valid=298, Invalid=2672, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:20:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2021-06-05 07:20:55,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4258. [2021-06-05 07:20:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4258 states, 4257 states have (on average 3.38148931172187) internal successors, (14395), 4257 states have internal predecessors, (14395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 14395 transitions. [2021-06-05 07:20:55,390 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 14395 transitions. Word has length 39 [2021-06-05 07:20:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:55,391 INFO L482 AbstractCegarLoop]: Abstraction has 4258 states and 14395 transitions. [2021-06-05 07:20:55,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 14395 transitions. [2021-06-05 07:20:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:55,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:55,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:55,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 07:20:55,396 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash -984614040, now seen corresponding path program 211 times [2021-06-05 07:20:55,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:55,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198252161] [2021-06-05 07:20:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:55,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:55,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198252161] [2021-06-05 07:20:55,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198252161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:55,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:55,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:55,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337802896] [2021-06-05 07:20:55,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:55,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:55,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:55,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:55,590 INFO L87 Difference]: Start difference. First operand 4258 states and 14395 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:56,882 INFO L93 Difference]: Finished difference Result 4784 states and 15956 transitions. [2021-06-05 07:20:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:20:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:56,890 INFO L225 Difference]: With dead ends: 4784 [2021-06-05 07:20:56,890 INFO L226 Difference]: Without dead ends: 4738 [2021-06-05 07:20:56,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 811.0ms TimeCoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:20:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-06-05 07:20:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4262. [2021-06-05 07:20:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 3.3801924430884767) internal successors, (14403), 4261 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 14403 transitions. [2021-06-05 07:20:56,947 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 14403 transitions. Word has length 39 [2021-06-05 07:20:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:56,947 INFO L482 AbstractCegarLoop]: Abstraction has 4262 states and 14403 transitions. [2021-06-05 07:20:56,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 14403 transitions. [2021-06-05 07:20:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:56,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:56,952 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:56,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 07:20:56,952 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:56,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1232080202, now seen corresponding path program 212 times [2021-06-05 07:20:56,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:56,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516843413] [2021-06-05 07:20:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:57,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:57,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516843413] [2021-06-05 07:20:57,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516843413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:57,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:57,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:57,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232296360] [2021-06-05 07:20:57,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:57,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:57,167 INFO L87 Difference]: Start difference. First operand 4262 states and 14403 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:20:58,529 INFO L93 Difference]: Finished difference Result 4744 states and 15867 transitions. [2021-06-05 07:20:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:20:58,529 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:20:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:20:58,537 INFO L225 Difference]: With dead ends: 4744 [2021-06-05 07:20:58,537 INFO L226 Difference]: Without dead ends: 4695 [2021-06-05 07:20:58,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 907.0ms TimeCoverageRelationStatistics Valid=282, Invalid=2474, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:20:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-06-05 07:20:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4252. [2021-06-05 07:20:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 4251 states have (on average 3.3832039520112915) internal successors, (14382), 4251 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 14382 transitions. [2021-06-05 07:20:58,599 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 14382 transitions. Word has length 39 [2021-06-05 07:20:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:20:58,599 INFO L482 AbstractCegarLoop]: Abstraction has 4252 states and 14382 transitions. [2021-06-05 07:20:58,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:20:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 14382 transitions. [2021-06-05 07:20:58,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:20:58,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:20:58,604 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:20:58,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 07:20:58,604 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:20:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:20:58,604 INFO L82 PathProgramCache]: Analyzing trace with hash 306795320, now seen corresponding path program 213 times [2021-06-05 07:20:58,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:20:58,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229302635] [2021-06-05 07:20:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:20:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:20:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:20:58,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:20:58,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229302635] [2021-06-05 07:20:58,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229302635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:20:58,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:20:58,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:20:58,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918214488] [2021-06-05 07:20:58,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:20:58,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:20:58,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:20:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:20:58,792 INFO L87 Difference]: Start difference. First operand 4252 states and 14382 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:00,128 INFO L93 Difference]: Finished difference Result 4761 states and 15970 transitions. [2021-06-05 07:21:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:21:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:00,136 INFO L225 Difference]: With dead ends: 4761 [2021-06-05 07:21:00,136 INFO L226 Difference]: Without dead ends: 4694 [2021-06-05 07:21:00,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 779.7ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:21:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-06-05 07:21:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4308. [2021-06-05 07:21:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4307 states have (on average 3.3768284188530298) internal successors, (14544), 4307 states have internal predecessors, (14544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 14544 transitions. [2021-06-05 07:21:00,202 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 14544 transitions. Word has length 39 [2021-06-05 07:21:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:00,203 INFO L482 AbstractCegarLoop]: Abstraction has 4308 states and 14544 transitions. [2021-06-05 07:21:00,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 14544 transitions. [2021-06-05 07:21:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:00,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:00,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:00,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 07:21:00,209 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:00,209 INFO L82 PathProgramCache]: Analyzing trace with hash 176200472, now seen corresponding path program 214 times [2021-06-05 07:21:00,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:00,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102930911] [2021-06-05 07:21:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:00,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:00,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102930911] [2021-06-05 07:21:00,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102930911] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:00,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:00,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:00,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677518492] [2021-06-05 07:21:00,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:00,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:00,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:00,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:00,396 INFO L87 Difference]: Start difference. First operand 4308 states and 14544 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:01,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:01,647 INFO L93 Difference]: Finished difference Result 4757 states and 15954 transitions. [2021-06-05 07:21:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:21:01,647 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:01,655 INFO L225 Difference]: With dead ends: 4757 [2021-06-05 07:21:01,655 INFO L226 Difference]: Without dead ends: 4694 [2021-06-05 07:21:01,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 741.8ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:21:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-06-05 07:21:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4340. [2021-06-05 07:21:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.3712837059230236) internal successors, (14628), 4339 states have internal predecessors, (14628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 14628 transitions. [2021-06-05 07:21:01,722 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 14628 transitions. Word has length 39 [2021-06-05 07:21:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:01,722 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 14628 transitions. [2021-06-05 07:21:01,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 14628 transitions. [2021-06-05 07:21:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:01,727 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:01,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:01,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 07:21:01,728 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:01,728 INFO L82 PathProgramCache]: Analyzing trace with hash -353699976, now seen corresponding path program 215 times [2021-06-05 07:21:01,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:01,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731255179] [2021-06-05 07:21:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:01,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:01,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731255179] [2021-06-05 07:21:01,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731255179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:01,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:01,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:01,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697923913] [2021-06-05 07:21:01,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:01,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:01,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:01,913 INFO L87 Difference]: Start difference. First operand 4340 states and 14628 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:03,193 INFO L93 Difference]: Finished difference Result 4781 states and 16014 transitions. [2021-06-05 07:21:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:21:03,193 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:03,201 INFO L225 Difference]: With dead ends: 4781 [2021-06-05 07:21:03,201 INFO L226 Difference]: Without dead ends: 4658 [2021-06-05 07:21:03,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 752.4ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:21:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-06-05 07:21:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4292. [2021-06-05 07:21:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4291 states have (on average 3.377767420181776) internal successors, (14494), 4291 states have internal predecessors, (14494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 14494 transitions. [2021-06-05 07:21:03,259 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 14494 transitions. Word has length 39 [2021-06-05 07:21:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:03,260 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 14494 transitions. [2021-06-05 07:21:03,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 14494 transitions. [2021-06-05 07:21:03,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:03,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:03,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:03,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 07:21:03,265 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:03,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:03,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1072111146, now seen corresponding path program 216 times [2021-06-05 07:21:03,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:03,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908224319] [2021-06-05 07:21:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:03,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:03,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908224319] [2021-06-05 07:21:03,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908224319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:03,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:03,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:03,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812298115] [2021-06-05 07:21:03,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:03,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:03,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:03,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:03,451 INFO L87 Difference]: Start difference. First operand 4292 states and 14494 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:05,804 INFO L93 Difference]: Finished difference Result 7281 states and 24446 transitions. [2021-06-05 07:21:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 07:21:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:05,816 INFO L225 Difference]: With dead ends: 7281 [2021-06-05 07:21:05,817 INFO L226 Difference]: Without dead ends: 7175 [2021-06-05 07:21:05,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1379.6ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 07:21:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2021-06-05 07:21:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 4357. [2021-06-05 07:21:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 4356 states have (on average 3.3732782369146004) internal successors, (14694), 4356 states have internal predecessors, (14694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 14694 transitions. [2021-06-05 07:21:05,899 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 14694 transitions. Word has length 39 [2021-06-05 07:21:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:05,899 INFO L482 AbstractCegarLoop]: Abstraction has 4357 states and 14694 transitions. [2021-06-05 07:21:05,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 14694 transitions. [2021-06-05 07:21:05,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:05,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:05,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:05,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 07:21:05,905 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1442257848, now seen corresponding path program 217 times [2021-06-05 07:21:05,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:05,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83946995] [2021-06-05 07:21:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:06,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:06,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83946995] [2021-06-05 07:21:06,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83946995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:06,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:06,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:06,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189840437] [2021-06-05 07:21:06,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:06,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:06,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:06,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:06,096 INFO L87 Difference]: Start difference. First operand 4357 states and 14694 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:08,771 INFO L93 Difference]: Finished difference Result 8067 states and 27212 transitions. [2021-06-05 07:21:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 07:21:08,772 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:08,785 INFO L225 Difference]: With dead ends: 8067 [2021-06-05 07:21:08,785 INFO L226 Difference]: Without dead ends: 8015 [2021-06-05 07:21:08,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1573.2ms TimeCoverageRelationStatistics Valid=521, Invalid=6451, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 07:21:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2021-06-05 07:21:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 4327. [2021-06-05 07:21:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4326 states have (on average 3.3747110494683312) internal successors, (14599), 4326 states have internal predecessors, (14599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 14599 transitions. [2021-06-05 07:21:08,862 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 14599 transitions. Word has length 39 [2021-06-05 07:21:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:08,863 INFO L482 AbstractCegarLoop]: Abstraction has 4327 states and 14599 transitions. [2021-06-05 07:21:08,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:08,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 14599 transitions. [2021-06-05 07:21:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:08,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:08,868 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:08,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 07:21:08,868 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:08,868 INFO L82 PathProgramCache]: Analyzing trace with hash -153627576, now seen corresponding path program 218 times [2021-06-05 07:21:08,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:08,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578541775] [2021-06-05 07:21:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:09,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:09,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578541775] [2021-06-05 07:21:09,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578541775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:09,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:09,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:09,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978147597] [2021-06-05 07:21:09,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:09,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:09,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:09,058 INFO L87 Difference]: Start difference. First operand 4327 states and 14599 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:10,715 INFO L93 Difference]: Finished difference Result 6643 states and 22162 transitions. [2021-06-05 07:21:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:21:10,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:10,726 INFO L225 Difference]: With dead ends: 6643 [2021-06-05 07:21:10,726 INFO L226 Difference]: Without dead ends: 6588 [2021-06-05 07:21:10,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 926.4ms TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:21:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-06-05 07:21:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4361. [2021-06-05 07:21:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.375) internal successors, (14715), 4360 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14715 transitions. [2021-06-05 07:21:10,801 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14715 transitions. Word has length 39 [2021-06-05 07:21:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:10,802 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14715 transitions. [2021-06-05 07:21:10,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14715 transitions. [2021-06-05 07:21:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:10,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:10,807 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:10,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 07:21:10,807 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1019024646, now seen corresponding path program 219 times [2021-06-05 07:21:10,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:10,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45476836] [2021-06-05 07:21:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:11,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:11,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45476836] [2021-06-05 07:21:11,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45476836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:11,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:11,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:11,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585713353] [2021-06-05 07:21:11,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:11,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:11,044 INFO L87 Difference]: Start difference. First operand 4361 states and 14715 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:12,990 INFO L93 Difference]: Finished difference Result 7356 states and 24634 transitions. [2021-06-05 07:21:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 07:21:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:13,003 INFO L225 Difference]: With dead ends: 7356 [2021-06-05 07:21:13,003 INFO L226 Difference]: Without dead ends: 7296 [2021-06-05 07:21:13,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 1103.8ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:21:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7296 states. [2021-06-05 07:21:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7296 to 4359. [2021-06-05 07:21:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.375401560348784) internal successors, (14710), 4358 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14710 transitions. [2021-06-05 07:21:13,077 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14710 transitions. Word has length 39 [2021-06-05 07:21:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:13,077 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14710 transitions. [2021-06-05 07:21:13,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14710 transitions. [2021-06-05 07:21:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:13,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:13,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:13,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 07:21:13,083 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:13,083 INFO L82 PathProgramCache]: Analyzing trace with hash -858378956, now seen corresponding path program 220 times [2021-06-05 07:21:13,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:13,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900084743] [2021-06-05 07:21:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:13,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:13,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900084743] [2021-06-05 07:21:13,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900084743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:13,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:13,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:13,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007614713] [2021-06-05 07:21:13,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:13,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:13,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:13,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:13,282 INFO L87 Difference]: Start difference. First operand 4359 states and 14710 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:14,916 INFO L93 Difference]: Finished difference Result 6612 states and 22116 transitions. [2021-06-05 07:21:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:21:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:14,928 INFO L225 Difference]: With dead ends: 6612 [2021-06-05 07:21:14,928 INFO L226 Difference]: Without dead ends: 6521 [2021-06-05 07:21:14,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 896.8ms TimeCoverageRelationStatistics Valid=300, Invalid=2892, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:21:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2021-06-05 07:21:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 4359. [2021-06-05 07:21:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3740247820100966) internal successors, (14704), 4358 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14704 transitions. [2021-06-05 07:21:15,010 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14704 transitions. Word has length 39 [2021-06-05 07:21:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:15,010 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14704 transitions. [2021-06-05 07:21:15,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14704 transitions. [2021-06-05 07:21:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:15,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:15,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:15,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 07:21:15,016 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:15,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1934106134, now seen corresponding path program 221 times [2021-06-05 07:21:15,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:15,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721682218] [2021-06-05 07:21:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:15,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:15,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721682218] [2021-06-05 07:21:15,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721682218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:15,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:15,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:15,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040271839] [2021-06-05 07:21:15,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:15,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:15,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:15,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:15,203 INFO L87 Difference]: Start difference. First operand 4359 states and 14704 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:17,197 INFO L93 Difference]: Finished difference Result 7445 states and 24958 transitions. [2021-06-05 07:21:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:21:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:17,210 INFO L225 Difference]: With dead ends: 7445 [2021-06-05 07:21:17,211 INFO L226 Difference]: Without dead ends: 7329 [2021-06-05 07:21:17,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1041.7ms TimeCoverageRelationStatistics Valid=338, Invalid=3694, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:21:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2021-06-05 07:21:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 4321. [2021-06-05 07:21:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 3.3784722222222223) internal successors, (14595), 4320 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 14595 transitions. [2021-06-05 07:21:17,289 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 14595 transitions. Word has length 39 [2021-06-05 07:21:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:17,289 INFO L482 AbstractCegarLoop]: Abstraction has 4321 states and 14595 transitions. [2021-06-05 07:21:17,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 14595 transitions. [2021-06-05 07:21:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:17,295 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:17,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:17,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 07:21:17,295 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 291247450, now seen corresponding path program 222 times [2021-06-05 07:21:17,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:17,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504847378] [2021-06-05 07:21:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:17,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:17,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504847378] [2021-06-05 07:21:17,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504847378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:17,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:17,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:17,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185459398] [2021-06-05 07:21:17,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:17,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:17,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:17,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:17,481 INFO L87 Difference]: Start difference. First operand 4321 states and 14595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:19,059 INFO L93 Difference]: Finished difference Result 4939 states and 16469 transitions. [2021-06-05 07:21:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:21:19,060 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:19,068 INFO L225 Difference]: With dead ends: 4939 [2021-06-05 07:21:19,068 INFO L226 Difference]: Without dead ends: 4872 [2021-06-05 07:21:19,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1054.4ms TimeCoverageRelationStatistics Valid=339, Invalid=3201, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:21:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-06-05 07:21:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4347. [2021-06-05 07:21:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 3.374597330878969) internal successors, (14666), 4346 states have internal predecessors, (14666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 14666 transitions. [2021-06-05 07:21:19,138 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 14666 transitions. Word has length 39 [2021-06-05 07:21:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:19,139 INFO L482 AbstractCegarLoop]: Abstraction has 4347 states and 14666 transitions. [2021-06-05 07:21:19,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 14666 transitions. [2021-06-05 07:21:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:19,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:19,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:19,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 07:21:19,146 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:19,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1428368520, now seen corresponding path program 223 times [2021-06-05 07:21:19,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:19,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442353892] [2021-06-05 07:21:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:19,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:19,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442353892] [2021-06-05 07:21:19,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442353892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:19,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:19,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:19,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784504873] [2021-06-05 07:21:19,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:19,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:19,334 INFO L87 Difference]: Start difference. First operand 4347 states and 14666 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:21,450 INFO L93 Difference]: Finished difference Result 5045 states and 16728 transitions. [2021-06-05 07:21:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 07:21:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:21,458 INFO L225 Difference]: With dead ends: 5045 [2021-06-05 07:21:21,458 INFO L226 Difference]: Without dead ends: 5002 [2021-06-05 07:21:21,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1441.7ms TimeCoverageRelationStatistics Valid=475, Invalid=4927, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 07:21:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2021-06-05 07:21:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4353. [2021-06-05 07:21:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 3.3729319852941178) internal successors, (14679), 4352 states have internal predecessors, (14679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 14679 transitions. [2021-06-05 07:21:21,523 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 14679 transitions. Word has length 39 [2021-06-05 07:21:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:21,523 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 14679 transitions. [2021-06-05 07:21:21,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 14679 transitions. [2021-06-05 07:21:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:21,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:21,529 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:21,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 07:21:21,529 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:21,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1086000474, now seen corresponding path program 224 times [2021-06-05 07:21:21,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:21,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001888513] [2021-06-05 07:21:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:21,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:21,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001888513] [2021-06-05 07:21:21,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001888513] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:21,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:21,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:21,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270941946] [2021-06-05 07:21:21,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:21,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:21,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:21,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:21,716 INFO L87 Difference]: Start difference. First operand 4353 states and 14679 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:23,664 INFO L93 Difference]: Finished difference Result 4984 states and 16578 transitions. [2021-06-05 07:21:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 07:21:23,664 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:23,673 INFO L225 Difference]: With dead ends: 4984 [2021-06-05 07:21:23,673 INFO L226 Difference]: Without dead ends: 4920 [2021-06-05 07:21:23,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1345.4ms TimeCoverageRelationStatistics Valid=432, Invalid=4398, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 07:21:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2021-06-05 07:21:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4335. [2021-06-05 07:21:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 4334 states have (on average 3.3770189201661283) internal successors, (14636), 4334 states have internal predecessors, (14636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 14636 transitions. [2021-06-05 07:21:23,749 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 14636 transitions. Word has length 39 [2021-06-05 07:21:23,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:23,749 INFO L482 AbstractCegarLoop]: Abstraction has 4335 states and 14636 transitions. [2021-06-05 07:21:23,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 14636 transitions. [2021-06-05 07:21:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:23,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:23,756 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:23,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 07:21:23,756 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1706434874, now seen corresponding path program 225 times [2021-06-05 07:21:23,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:23,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791254947] [2021-06-05 07:21:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:23,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:23,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791254947] [2021-06-05 07:21:23,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791254947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:23,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:23,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:23,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043706932] [2021-06-05 07:21:23,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:23,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:23,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:23,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:23,943 INFO L87 Difference]: Start difference. First operand 4335 states and 14636 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:25,481 INFO L93 Difference]: Finished difference Result 4927 states and 16427 transitions. [2021-06-05 07:21:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:21:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:25,489 INFO L225 Difference]: With dead ends: 4927 [2021-06-05 07:21:25,489 INFO L226 Difference]: Without dead ends: 4860 [2021-06-05 07:21:25,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1014.2ms TimeCoverageRelationStatistics Valid=317, Invalid=3105, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:21:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2021-06-05 07:21:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4355. [2021-06-05 07:21:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.377124483233808) internal successors, (14704), 4354 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14704 transitions. [2021-06-05 07:21:25,549 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14704 transitions. Word has length 39 [2021-06-05 07:21:25,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:25,550 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14704 transitions. [2021-06-05 07:21:25,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14704 transitions. [2021-06-05 07:21:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:25,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:25,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:25,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 07:21:25,555 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1575840026, now seen corresponding path program 226 times [2021-06-05 07:21:25,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:25,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733503833] [2021-06-05 07:21:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:25,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:25,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733503833] [2021-06-05 07:21:25,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733503833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:25,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:25,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:25,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319924602] [2021-06-05 07:21:25,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:25,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:25,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:25,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:25,747 INFO L87 Difference]: Start difference. First operand 4355 states and 14704 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:27,176 INFO L93 Difference]: Finished difference Result 4902 states and 16318 transitions. [2021-06-05 07:21:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:21:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:27,184 INFO L225 Difference]: With dead ends: 4902 [2021-06-05 07:21:27,184 INFO L226 Difference]: Without dead ends: 4839 [2021-06-05 07:21:27,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 961.4ms TimeCoverageRelationStatistics Valid=313, Invalid=2879, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:21:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-06-05 07:21:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4355. [2021-06-05 07:21:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3762057877813505) internal successors, (14700), 4354 states have internal predecessors, (14700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14700 transitions. [2021-06-05 07:21:27,250 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14700 transitions. Word has length 39 [2021-06-05 07:21:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:27,250 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14700 transitions. [2021-06-05 07:21:27,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14700 transitions. [2021-06-05 07:21:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:27,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:27,256 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:27,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 07:21:27,256 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1440161434, now seen corresponding path program 227 times [2021-06-05 07:21:27,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:27,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970630461] [2021-06-05 07:21:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:27,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:27,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970630461] [2021-06-05 07:21:27,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970630461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:27,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:27,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:27,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030576940] [2021-06-05 07:21:27,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:27,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:27,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:27,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:27,449 INFO L87 Difference]: Start difference. First operand 4355 states and 14700 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:29,555 INFO L93 Difference]: Finished difference Result 5070 states and 16753 transitions. [2021-06-05 07:21:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 07:21:29,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:29,563 INFO L225 Difference]: With dead ends: 5070 [2021-06-05 07:21:29,563 INFO L226 Difference]: Without dead ends: 5027 [2021-06-05 07:21:29,564 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 1446.1ms TimeCoverageRelationStatistics Valid=458, Invalid=4944, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 07:21:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2021-06-05 07:21:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4367. [2021-06-05 07:21:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4367 states, 4366 states have (on average 3.375171781951443) internal successors, (14736), 4366 states have internal predecessors, (14736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4367 states to 4367 states and 14736 transitions. [2021-06-05 07:21:29,652 INFO L78 Accepts]: Start accepts. Automaton has 4367 states and 14736 transitions. Word has length 39 [2021-06-05 07:21:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:29,652 INFO L482 AbstractCegarLoop]: Abstraction has 4367 states and 14736 transitions. [2021-06-05 07:21:29,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4367 states and 14736 transitions. [2021-06-05 07:21:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:29,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:29,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:29,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 07:21:29,660 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash -340436868, now seen corresponding path program 228 times [2021-06-05 07:21:29,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:29,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235661673] [2021-06-05 07:21:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:29,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:29,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235661673] [2021-06-05 07:21:29,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235661673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:29,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:29,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:29,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141155516] [2021-06-05 07:21:29,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:29,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:29,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:29,851 INFO L87 Difference]: Start difference. First operand 4367 states and 14736 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:31,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:31,882 INFO L93 Difference]: Finished difference Result 5050 states and 16695 transitions. [2021-06-05 07:21:31,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 07:21:31,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:31,890 INFO L225 Difference]: With dead ends: 5050 [2021-06-05 07:21:31,890 INFO L226 Difference]: Without dead ends: 4998 [2021-06-05 07:21:31,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1386.2ms TimeCoverageRelationStatistics Valid=446, Invalid=4810, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 07:21:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2021-06-05 07:21:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4359. [2021-06-05 07:21:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3767783386874712) internal successors, (14716), 4358 states have internal predecessors, (14716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14716 transitions. [2021-06-05 07:21:31,955 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14716 transitions. Word has length 39 [2021-06-05 07:21:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:31,955 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14716 transitions. [2021-06-05 07:21:31,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14716 transitions. [2021-06-05 07:21:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:31,960 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:31,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:31,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 07:21:31,961 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1936322292, now seen corresponding path program 229 times [2021-06-05 07:21:31,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:31,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211127674] [2021-06-05 07:21:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:32,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:32,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211127674] [2021-06-05 07:21:32,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211127674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:32,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:32,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:32,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616780211] [2021-06-05 07:21:32,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:32,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:32,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:32,146 INFO L87 Difference]: Start difference. First operand 4359 states and 14716 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:33,673 INFO L93 Difference]: Finished difference Result 4980 states and 16485 transitions. [2021-06-05 07:21:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:21:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:33,681 INFO L225 Difference]: With dead ends: 4980 [2021-06-05 07:21:33,681 INFO L226 Difference]: Without dead ends: 4925 [2021-06-05 07:21:33,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1040.5ms TimeCoverageRelationStatistics Valid=348, Invalid=3192, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:21:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2021-06-05 07:21:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4361. [2021-06-05 07:21:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.3759174311926605) internal successors, (14719), 4360 states have internal predecessors, (14719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14719 transitions. [2021-06-05 07:21:33,764 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14719 transitions. Word has length 39 [2021-06-05 07:21:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:33,764 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14719 transitions. [2021-06-05 07:21:33,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14719 transitions. [2021-06-05 07:21:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:33,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:33,769 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:33,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 07:21:33,769 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash -763670070, now seen corresponding path program 230 times [2021-06-05 07:21:33,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:33,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277942736] [2021-06-05 07:21:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:33,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:33,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277942736] [2021-06-05 07:21:33,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277942736] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:33,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:33,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:33,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050464464] [2021-06-05 07:21:33,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:33,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:33,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:33,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:33,990 INFO L87 Difference]: Start difference. First operand 4361 states and 14719 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:35,397 INFO L93 Difference]: Finished difference Result 4918 states and 16340 transitions. [2021-06-05 07:21:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:21:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:35,405 INFO L225 Difference]: With dead ends: 4918 [2021-06-05 07:21:35,406 INFO L226 Difference]: Without dead ends: 4872 [2021-06-05 07:21:35,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 963.3ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:21:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-06-05 07:21:35,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4365. [2021-06-05 07:21:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3746562786434464) internal successors, (14727), 4364 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14727 transitions. [2021-06-05 07:21:35,473 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14727 transitions. Word has length 39 [2021-06-05 07:21:35,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:35,473 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 14727 transitions. [2021-06-05 07:21:35,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:35,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14727 transitions. [2021-06-05 07:21:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:35,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:35,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:35,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 07:21:35,479 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1011136232, now seen corresponding path program 231 times [2021-06-05 07:21:35,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:35,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165957335] [2021-06-05 07:21:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:35,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:35,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165957335] [2021-06-05 07:21:35,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165957335] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:35,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:35,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:35,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523920063] [2021-06-05 07:21:35,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:35,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:35,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:35,676 INFO L87 Difference]: Start difference. First operand 4365 states and 14727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:37,210 INFO L93 Difference]: Finished difference Result 4911 states and 16317 transitions. [2021-06-05 07:21:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:21:37,211 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:37,218 INFO L225 Difference]: With dead ends: 4911 [2021-06-05 07:21:37,218 INFO L226 Difference]: Without dead ends: 4862 [2021-06-05 07:21:37,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1048.4ms TimeCoverageRelationStatistics Valid=328, Invalid=2978, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:21:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-06-05 07:21:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4355. [2021-06-05 07:21:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3780431786862657) internal successors, (14708), 4354 states have internal predecessors, (14708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14708 transitions. [2021-06-05 07:21:37,281 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14708 transitions. Word has length 39 [2021-06-05 07:21:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:37,281 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14708 transitions. [2021-06-05 07:21:37,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14708 transitions. [2021-06-05 07:21:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:37,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:37,286 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:37,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 07:21:37,287 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1652205256, now seen corresponding path program 232 times [2021-06-05 07:21:37,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:37,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892452028] [2021-06-05 07:21:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:37,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:37,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892452028] [2021-06-05 07:21:37,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892452028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:37,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:37,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:37,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304873314] [2021-06-05 07:21:37,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:37,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:37,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:37,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:37,488 INFO L87 Difference]: Start difference. First operand 4355 states and 14708 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:39,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:39,026 INFO L93 Difference]: Finished difference Result 4876 states and 16287 transitions. [2021-06-05 07:21:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:21:39,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:39,035 INFO L225 Difference]: With dead ends: 4876 [2021-06-05 07:21:39,035 INFO L226 Difference]: Without dead ends: 4809 [2021-06-05 07:21:39,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 992.1ms TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:21:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2021-06-05 07:21:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4373. [2021-06-05 07:21:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.375114364135407) internal successors, (14756), 4372 states have internal predecessors, (14756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14756 transitions. [2021-06-05 07:21:39,101 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14756 transitions. Word has length 39 [2021-06-05 07:21:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:39,101 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14756 transitions. [2021-06-05 07:21:39,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14756 transitions. [2021-06-05 07:21:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:39,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:39,107 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:39,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 07:21:39,107 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:39,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash 923146070, now seen corresponding path program 233 times [2021-06-05 07:21:39,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:39,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214568428] [2021-06-05 07:21:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:39,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:39,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214568428] [2021-06-05 07:21:39,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214568428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:39,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:39,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:39,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723801815] [2021-06-05 07:21:39,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:39,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:39,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:39,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:39,325 INFO L87 Difference]: Start difference. First operand 4373 states and 14756 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:41,379 INFO L93 Difference]: Finished difference Result 4981 states and 16542 transitions. [2021-06-05 07:21:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 07:21:41,379 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:41,387 INFO L225 Difference]: With dead ends: 4981 [2021-06-05 07:21:41,387 INFO L226 Difference]: Without dead ends: 4938 [2021-06-05 07:21:41,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1378.0ms TimeCoverageRelationStatistics Valid=439, Invalid=4531, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 07:21:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2021-06-05 07:21:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4379. [2021-06-05 07:21:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.373458200091366) internal successors, (14769), 4378 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14769 transitions. [2021-06-05 07:21:41,451 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14769 transitions. Word has length 39 [2021-06-05 07:21:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:41,451 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14769 transitions. [2021-06-05 07:21:41,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14769 transitions. [2021-06-05 07:21:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:41,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:41,457 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:41,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 07:21:41,457 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash -857452232, now seen corresponding path program 234 times [2021-06-05 07:21:41,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:41,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805388888] [2021-06-05 07:21:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:41,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:41,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805388888] [2021-06-05 07:21:41,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805388888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:41,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:41,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:41,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000092212] [2021-06-05 07:21:41,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:41,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:41,649 INFO L87 Difference]: Start difference. First operand 4379 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:43,585 INFO L93 Difference]: Finished difference Result 4920 states and 16392 transitions. [2021-06-05 07:21:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 07:21:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:43,593 INFO L225 Difference]: With dead ends: 4920 [2021-06-05 07:21:43,593 INFO L226 Difference]: Without dead ends: 4856 [2021-06-05 07:21:43,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1285.4ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:21:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2021-06-05 07:21:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4361. [2021-06-05 07:21:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.3770642201834864) internal successors, (14724), 4360 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14724 transitions. [2021-06-05 07:21:43,664 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14724 transitions. Word has length 39 [2021-06-05 07:21:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:43,664 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14724 transitions. [2021-06-05 07:21:43,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14724 transitions. [2021-06-05 07:21:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:43,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:43,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:43,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 07:21:43,670 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:43,670 INFO L82 PathProgramCache]: Analyzing trace with hash 447403064, now seen corresponding path program 235 times [2021-06-05 07:21:43,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:43,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145043091] [2021-06-05 07:21:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:43,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:43,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145043091] [2021-06-05 07:21:43,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145043091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:43,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:43,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668830217] [2021-06-05 07:21:43,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:43,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:43,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:43,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:43,860 INFO L87 Difference]: Start difference. First operand 4361 states and 14724 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:45,337 INFO L93 Difference]: Finished difference Result 4840 states and 16179 transitions. [2021-06-05 07:21:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:21:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:45,345 INFO L225 Difference]: With dead ends: 4840 [2021-06-05 07:21:45,345 INFO L226 Difference]: Without dead ends: 4773 [2021-06-05 07:21:45,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 909.1ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:21:45,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2021-06-05 07:21:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4373. [2021-06-05 07:21:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.3737419945105214) internal successors, (14750), 4372 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14750 transitions. [2021-06-05 07:21:45,404 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14750 transitions. Word has length 39 [2021-06-05 07:21:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:45,405 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14750 transitions. [2021-06-05 07:21:45,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14750 transitions. [2021-06-05 07:21:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:45,410 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:45,410 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:45,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 07:21:45,410 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:45,410 INFO L82 PathProgramCache]: Analyzing trace with hash 805473272, now seen corresponding path program 236 times [2021-06-05 07:21:45,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:45,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240373210] [2021-06-05 07:21:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:45,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:45,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240373210] [2021-06-05 07:21:45,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240373210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:45,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:45,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:45,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981905446] [2021-06-05 07:21:45,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:45,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:45,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:45,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:45,599 INFO L87 Difference]: Start difference. First operand 4373 states and 14750 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:46,887 INFO L93 Difference]: Finished difference Result 4817 states and 16075 transitions. [2021-06-05 07:21:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:21:46,888 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:46,896 INFO L225 Difference]: With dead ends: 4817 [2021-06-05 07:21:46,896 INFO L226 Difference]: Without dead ends: 4774 [2021-06-05 07:21:46,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 813.6ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:21:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-06-05 07:21:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 4391. [2021-06-05 07:21:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.3687927107061504) internal successors, (14789), 4390 states have internal predecessors, (14789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14789 transitions. [2021-06-05 07:21:46,959 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14789 transitions. Word has length 39 [2021-06-05 07:21:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:46,959 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14789 transitions. [2021-06-05 07:21:46,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14789 transitions. [2021-06-05 07:21:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:46,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:46,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:46,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 07:21:46,965 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:46,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1635004442, now seen corresponding path program 237 times [2021-06-05 07:21:46,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:46,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262451659] [2021-06-05 07:21:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:47,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:47,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262451659] [2021-06-05 07:21:47,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262451659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:47,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:47,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:47,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746375461] [2021-06-05 07:21:47,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:47,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:47,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:47,156 INFO L87 Difference]: Start difference. First operand 4391 states and 14789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:48,487 INFO L93 Difference]: Finished difference Result 4766 states and 15952 transitions. [2021-06-05 07:21:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:21:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:48,495 INFO L225 Difference]: With dead ends: 4766 [2021-06-05 07:21:48,496 INFO L226 Difference]: Without dead ends: 4703 [2021-06-05 07:21:48,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 851.1ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:21:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-06-05 07:21:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4373. [2021-06-05 07:21:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.372369624885636) internal successors, (14744), 4372 states have internal predecessors, (14744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14744 transitions. [2021-06-05 07:21:48,562 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14744 transitions. Word has length 39 [2021-06-05 07:21:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:48,562 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14744 transitions. [2021-06-05 07:21:48,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14744 transitions. [2021-06-05 07:21:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:48,568 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:48,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:48,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 07:21:48,568 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1861188970, now seen corresponding path program 238 times [2021-06-05 07:21:48,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:48,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82708799] [2021-06-05 07:21:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:48,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:48,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82708799] [2021-06-05 07:21:48,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82708799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:48,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:48,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:48,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341828461] [2021-06-05 07:21:48,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:48,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:48,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:48,765 INFO L87 Difference]: Start difference. First operand 4373 states and 14744 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:50,706 INFO L93 Difference]: Finished difference Result 4937 states and 16402 transitions. [2021-06-05 07:21:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:21:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:50,714 INFO L225 Difference]: With dead ends: 4937 [2021-06-05 07:21:50,714 INFO L226 Difference]: Without dead ends: 4894 [2021-06-05 07:21:50,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1267.6ms TimeCoverageRelationStatistics Valid=378, Invalid=4044, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:21:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2021-06-05 07:21:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4382. [2021-06-05 07:21:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.370919881305638) internal successors, (14768), 4381 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14768 transitions. [2021-06-05 07:21:50,776 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14768 transitions. Word has length 39 [2021-06-05 07:21:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:50,776 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14768 transitions. [2021-06-05 07:21:50,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14768 transitions. [2021-06-05 07:21:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:50,781 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:50,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:50,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 07:21:50,782 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 653180024, now seen corresponding path program 239 times [2021-06-05 07:21:50,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:50,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334447207] [2021-06-05 07:21:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:50,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:50,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334447207] [2021-06-05 07:21:50,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334447207] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:50,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:50,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:50,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541153562] [2021-06-05 07:21:50,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:50,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:50,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:50,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:50,969 INFO L87 Difference]: Start difference. First operand 4382 states and 14768 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:52,794 INFO L93 Difference]: Finished difference Result 4932 states and 16383 transitions. [2021-06-05 07:21:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 07:21:52,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:52,802 INFO L225 Difference]: With dead ends: 4932 [2021-06-05 07:21:52,802 INFO L226 Difference]: Without dead ends: 4880 [2021-06-05 07:21:52,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1191.4ms TimeCoverageRelationStatistics Valid=363, Invalid=3927, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:21:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2021-06-05 07:21:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4376. [2021-06-05 07:21:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3718857142857144) internal successors, (14752), 4375 states have internal predecessors, (14752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14752 transitions. [2021-06-05 07:21:52,863 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14752 transitions. Word has length 39 [2021-06-05 07:21:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:52,863 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14752 transitions. [2021-06-05 07:21:52,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14752 transitions. [2021-06-05 07:21:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:52,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:52,868 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:52,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 07:21:52,868 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:52,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:52,868 INFO L82 PathProgramCache]: Analyzing trace with hash 896359096, now seen corresponding path program 240 times [2021-06-05 07:21:52,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:52,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987368403] [2021-06-05 07:21:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:53,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:53,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987368403] [2021-06-05 07:21:53,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987368403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:53,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:53,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:53,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711239940] [2021-06-05 07:21:53,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:53,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:53,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:53,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:53,058 INFO L87 Difference]: Start difference. First operand 4376 states and 14752 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:54,397 INFO L93 Difference]: Finished difference Result 4913 states and 16289 transitions. [2021-06-05 07:21:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:21:54,398 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:54,406 INFO L225 Difference]: With dead ends: 4913 [2021-06-05 07:21:54,406 INFO L226 Difference]: Without dead ends: 4870 [2021-06-05 07:21:54,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 855.3ms TimeCoverageRelationStatistics Valid=265, Invalid=2491, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:21:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2021-06-05 07:21:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4385. [2021-06-05 07:21:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.3697536496350367) internal successors, (14773), 4384 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14773 transitions. [2021-06-05 07:21:54,471 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14773 transitions. Word has length 39 [2021-06-05 07:21:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:54,472 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14773 transitions. [2021-06-05 07:21:54,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14773 transitions. [2021-06-05 07:21:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:54,477 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:54,477 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:54,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 07:21:54,477 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:54,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:54,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1648501064, now seen corresponding path program 241 times [2021-06-05 07:21:54,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:54,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801201734] [2021-06-05 07:21:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:54,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:54,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801201734] [2021-06-05 07:21:54,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801201734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:54,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:54,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:54,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622102715] [2021-06-05 07:21:54,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:54,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:54,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:54,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:54,674 INFO L87 Difference]: Start difference. First operand 4385 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:56,049 INFO L93 Difference]: Finished difference Result 4876 states and 16203 transitions. [2021-06-05 07:21:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:21:56,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:56,058 INFO L225 Difference]: With dead ends: 4876 [2021-06-05 07:21:56,058 INFO L226 Difference]: Without dead ends: 4825 [2021-06-05 07:21:56,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 888.7ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:21:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-06-05 07:21:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4379. [2021-06-05 07:21:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.3707172224760162) internal successors, (14757), 4378 states have internal predecessors, (14757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14757 transitions. [2021-06-05 07:21:56,143 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14757 transitions. Word has length 39 [2021-06-05 07:21:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:56,144 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14757 transitions. [2021-06-05 07:21:56,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14757 transitions. [2021-06-05 07:21:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:56,149 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:56,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:56,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 07:21:56,149 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:56,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:56,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1031282662, now seen corresponding path program 242 times [2021-06-05 07:21:56,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:56,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995222754] [2021-06-05 07:21:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:56,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:56,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995222754] [2021-06-05 07:21:56,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995222754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:56,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:56,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:56,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463663992] [2021-06-05 07:21:56,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:56,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:56,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:56,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:56,336 INFO L87 Difference]: Start difference. First operand 4379 states and 14757 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:57,608 INFO L93 Difference]: Finished difference Result 4848 states and 16132 transitions. [2021-06-05 07:21:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:21:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:57,617 INFO L225 Difference]: With dead ends: 4848 [2021-06-05 07:21:57,617 INFO L226 Difference]: Without dead ends: 4802 [2021-06-05 07:21:57,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 792.4ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:21:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-06-05 07:21:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4386. [2021-06-05 07:21:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.368757126567845) internal successors, (14772), 4385 states have internal predecessors, (14772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14772 transitions. [2021-06-05 07:21:57,690 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14772 transitions. Word has length 39 [2021-06-05 07:21:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:57,691 INFO L482 AbstractCegarLoop]: Abstraction has 4386 states and 14772 transitions. [2021-06-05 07:21:57,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14772 transitions. [2021-06-05 07:21:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:57,697 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:57,697 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:57,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 07:21:57,697 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1828617144, now seen corresponding path program 243 times [2021-06-05 07:21:57,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:57,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354631348] [2021-06-05 07:21:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:57,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:57,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354631348] [2021-06-05 07:21:57,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354631348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:57,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:57,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:57,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511677969] [2021-06-05 07:21:57,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:57,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:57,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:57,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:57,883 INFO L87 Difference]: Start difference. First operand 4386 states and 14772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:21:59,242 INFO L93 Difference]: Finished difference Result 4808 states and 16038 transitions. [2021-06-05 07:21:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:21:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:21:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:21:59,250 INFO L225 Difference]: With dead ends: 4808 [2021-06-05 07:21:59,250 INFO L226 Difference]: Without dead ends: 4747 [2021-06-05 07:21:59,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 872.4ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:21:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2021-06-05 07:21:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4370. [2021-06-05 07:21:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 3.373769741359579) internal successors, (14740), 4369 states have internal predecessors, (14740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 14740 transitions. [2021-06-05 07:21:59,312 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 14740 transitions. Word has length 39 [2021-06-05 07:21:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:21:59,312 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 14740 transitions. [2021-06-05 07:21:59,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:21:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 14740 transitions. [2021-06-05 07:21:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:21:59,318 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:21:59,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:21:59,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 07:21:59,318 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:21:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:21:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash -458552998, now seen corresponding path program 244 times [2021-06-05 07:21:59,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:21:59,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349982278] [2021-06-05 07:21:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:21:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:21:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:21:59,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:21:59,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349982278] [2021-06-05 07:21:59,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349982278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:21:59,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:21:59,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:21:59,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468595273] [2021-06-05 07:21:59,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:21:59,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:21:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:21:59,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:21:59,542 INFO L87 Difference]: Start difference. First operand 4370 states and 14740 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:00,856 INFO L93 Difference]: Finished difference Result 4803 states and 16056 transitions. [2021-06-05 07:22:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:22:00,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:00,865 INFO L225 Difference]: With dead ends: 4803 [2021-06-05 07:22:00,865 INFO L226 Difference]: Without dead ends: 4740 [2021-06-05 07:22:00,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 875.6ms TimeCoverageRelationStatistics Valid=269, Invalid=2487, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:22:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2021-06-05 07:22:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4374. [2021-06-05 07:22:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.372970500800366) internal successors, (14750), 4373 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14750 transitions. [2021-06-05 07:22:00,935 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14750 transitions. Word has length 39 [2021-06-05 07:22:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:00,935 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14750 transitions. [2021-06-05 07:22:00,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14750 transitions. [2021-06-05 07:22:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:00,941 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:00,941 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:00,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 07:22:00,941 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash -704045096, now seen corresponding path program 245 times [2021-06-05 07:22:00,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:00,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054178261] [2021-06-05 07:22:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:01,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:01,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054178261] [2021-06-05 07:22:01,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054178261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:01,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:01,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:01,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084076611] [2021-06-05 07:22:01,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:01,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:01,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:01,131 INFO L87 Difference]: Start difference. First operand 4374 states and 14750 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:02,424 INFO L93 Difference]: Finished difference Result 4842 states and 16145 transitions. [2021-06-05 07:22:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:22:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:02,432 INFO L225 Difference]: With dead ends: 4842 [2021-06-05 07:22:02,432 INFO L226 Difference]: Without dead ends: 4799 [2021-06-05 07:22:02,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 827.9ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:22:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-06-05 07:22:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4392. [2021-06-05 07:22:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3680255067182876) internal successors, (14789), 4391 states have internal predecessors, (14789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14789 transitions. [2021-06-05 07:22:02,492 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14789 transitions. Word has length 39 [2021-06-05 07:22:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:02,492 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14789 transitions. [2021-06-05 07:22:02,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14789 transitions. [2021-06-05 07:22:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:02,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:02,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:02,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 07:22:02,498 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash 125486074, now seen corresponding path program 246 times [2021-06-05 07:22:02,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:02,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744650607] [2021-06-05 07:22:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:02,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:02,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744650607] [2021-06-05 07:22:02,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744650607] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:02,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:02,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:02,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412071950] [2021-06-05 07:22:02,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:02,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:02,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:02,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:02,685 INFO L87 Difference]: Start difference. First operand 4392 states and 14789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:03,984 INFO L93 Difference]: Finished difference Result 4773 states and 15971 transitions. [2021-06-05 07:22:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:22:03,985 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:03,992 INFO L225 Difference]: With dead ends: 4773 [2021-06-05 07:22:03,992 INFO L226 Difference]: Without dead ends: 4710 [2021-06-05 07:22:03,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 807.3ms TimeCoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:22:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-06-05 07:22:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4374. [2021-06-05 07:22:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.372055796935742) internal successors, (14746), 4373 states have internal predecessors, (14746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14746 transitions. [2021-06-05 07:22:04,057 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14746 transitions. Word has length 39 [2021-06-05 07:22:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:04,057 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14746 transitions. [2021-06-05 07:22:04,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14746 transitions. [2021-06-05 07:22:04,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:04,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:04,063 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:04,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 07:22:04,063 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:04,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:04,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1887749734, now seen corresponding path program 247 times [2021-06-05 07:22:04,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:04,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747080741] [2021-06-05 07:22:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:04,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:04,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747080741] [2021-06-05 07:22:04,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747080741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:04,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:04,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:04,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156135372] [2021-06-05 07:22:04,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:04,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:04,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:04,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:04,249 INFO L87 Difference]: Start difference. First operand 4374 states and 14746 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:05,675 INFO L93 Difference]: Finished difference Result 4842 states and 16147 transitions. [2021-06-05 07:22:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:22:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:05,684 INFO L225 Difference]: With dead ends: 4842 [2021-06-05 07:22:05,684 INFO L226 Difference]: Without dead ends: 4787 [2021-06-05 07:22:05,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 929.1ms TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:22:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2021-06-05 07:22:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4380. [2021-06-05 07:22:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3704042018725735) internal successors, (14759), 4379 states have internal predecessors, (14759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14759 transitions. [2021-06-05 07:22:05,745 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14759 transitions. Word has length 39 [2021-06-05 07:22:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:05,745 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14759 transitions. [2021-06-05 07:22:05,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14759 transitions. [2021-06-05 07:22:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:05,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:05,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:05,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 07:22:05,750 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash -550691720, now seen corresponding path program 248 times [2021-06-05 07:22:05,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:05,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889326067] [2021-06-05 07:22:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:05,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:05,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889326067] [2021-06-05 07:22:05,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889326067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:05,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:05,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:05,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340022447] [2021-06-05 07:22:05,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:05,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:05,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:05,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:05,935 INFO L87 Difference]: Start difference. First operand 4380 states and 14759 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:07,294 INFO L93 Difference]: Finished difference Result 4818 states and 16077 transitions. [2021-06-05 07:22:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:22:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:07,303 INFO L225 Difference]: With dead ends: 4818 [2021-06-05 07:22:07,303 INFO L226 Difference]: Without dead ends: 4775 [2021-06-05 07:22:07,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 858.0ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:22:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2021-06-05 07:22:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4386. [2021-06-05 07:22:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.368757126567845) internal successors, (14772), 4385 states have internal predecessors, (14772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14772 transitions. [2021-06-05 07:22:07,374 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14772 transitions. Word has length 39 [2021-06-05 07:22:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:07,374 INFO L482 AbstractCegarLoop]: Abstraction has 4386 states and 14772 transitions. [2021-06-05 07:22:07,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14772 transitions. [2021-06-05 07:22:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:07,380 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:07,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:07,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 07:22:07,380 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash -822111270, now seen corresponding path program 249 times [2021-06-05 07:22:07,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:07,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916911585] [2021-06-05 07:22:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:07,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:07,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916911585] [2021-06-05 07:22:07,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916911585] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:07,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:07,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:07,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718603654] [2021-06-05 07:22:07,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:07,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:07,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:07,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:07,567 INFO L87 Difference]: Start difference. First operand 4386 states and 14772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:08,895 INFO L93 Difference]: Finished difference Result 4767 states and 15954 transitions. [2021-06-05 07:22:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:22:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:08,903 INFO L225 Difference]: With dead ends: 4767 [2021-06-05 07:22:08,904 INFO L226 Difference]: Without dead ends: 4706 [2021-06-05 07:22:08,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 839.3ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:22:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-06-05 07:22:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4370. [2021-06-05 07:22:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 3.373311970702678) internal successors, (14738), 4369 states have internal predecessors, (14738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 14738 transitions. [2021-06-05 07:22:08,964 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 14738 transitions. Word has length 39 [2021-06-05 07:22:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:08,965 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 14738 transitions. [2021-06-05 07:22:08,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 14738 transitions. [2021-06-05 07:22:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:08,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:08,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:08,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 07:22:08,971 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash -920266484, now seen corresponding path program 250 times [2021-06-05 07:22:08,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:08,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323032361] [2021-06-05 07:22:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:09,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:09,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323032361] [2021-06-05 07:22:09,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323032361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:09,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:09,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:09,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298918284] [2021-06-05 07:22:09,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:09,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:09,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:09,156 INFO L87 Difference]: Start difference. First operand 4370 states and 14738 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:10,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:10,810 INFO L93 Difference]: Finished difference Result 5001 states and 16511 transitions. [2021-06-05 07:22:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 07:22:10,811 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:10,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:10,818 INFO L225 Difference]: With dead ends: 5001 [2021-06-05 07:22:10,818 INFO L226 Difference]: Without dead ends: 4946 [2021-06-05 07:22:10,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1126.6ms TimeCoverageRelationStatistics Valid=363, Invalid=3419, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:22:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-06-05 07:22:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4379. [2021-06-05 07:22:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.3709456372772957) internal successors, (14758), 4378 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14758 transitions. [2021-06-05 07:22:10,878 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14758 transitions. Word has length 39 [2021-06-05 07:22:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:10,878 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14758 transitions. [2021-06-05 07:22:10,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14758 transitions. [2021-06-05 07:22:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:10,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:10,883 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:10,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 07:22:10,883 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash 252385738, now seen corresponding path program 251 times [2021-06-05 07:22:10,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:10,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403394900] [2021-06-05 07:22:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:11,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:11,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403394900] [2021-06-05 07:22:11,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403394900] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:11,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:11,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:11,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339023564] [2021-06-05 07:22:11,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:11,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:11,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:11,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:11,067 INFO L87 Difference]: Start difference. First operand 4379 states and 14758 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:12,535 INFO L93 Difference]: Finished difference Result 4992 states and 16478 transitions. [2021-06-05 07:22:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:22:12,536 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:12,544 INFO L225 Difference]: With dead ends: 4992 [2021-06-05 07:22:12,544 INFO L226 Difference]: Without dead ends: 4946 [2021-06-05 07:22:12,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 972.0ms TimeCoverageRelationStatistics Valid=309, Invalid=2883, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:22:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-06-05 07:22:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4385. [2021-06-05 07:22:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.3697536496350367) internal successors, (14773), 4384 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14773 transitions. [2021-06-05 07:22:12,608 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14773 transitions. Word has length 39 [2021-06-05 07:22:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:12,608 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14773 transitions. [2021-06-05 07:22:12,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14773 transitions. [2021-06-05 07:22:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:12,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:12,641 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:12,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 07:22:12,641 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:12,641 INFO L82 PathProgramCache]: Analyzing trace with hash 4919576, now seen corresponding path program 252 times [2021-06-05 07:22:12,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:12,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413007081] [2021-06-05 07:22:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:12,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:12,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413007081] [2021-06-05 07:22:12,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413007081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:12,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:12,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:12,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559227357] [2021-06-05 07:22:12,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:12,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:12,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:12,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:12,825 INFO L87 Difference]: Start difference. First operand 4385 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:14,301 INFO L93 Difference]: Finished difference Result 4952 states and 16385 transitions. [2021-06-05 07:22:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:22:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:14,309 INFO L225 Difference]: With dead ends: 4952 [2021-06-05 07:22:14,310 INFO L226 Difference]: Without dead ends: 4907 [2021-06-05 07:22:14,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 976.1ms TimeCoverageRelationStatistics Valid=310, Invalid=2882, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:22:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2021-06-05 07:22:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4383. [2021-06-05 07:22:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 4382 states have (on average 3.3703788224555) internal successors, (14769), 4382 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 14769 transitions. [2021-06-05 07:22:14,372 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 14769 transitions. Word has length 39 [2021-06-05 07:22:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:14,372 INFO L482 AbstractCegarLoop]: Abstraction has 4383 states and 14769 transitions. [2021-06-05 07:22:14,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 14769 transitions. [2021-06-05 07:22:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:14,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:14,377 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:14,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 07:22:14,377 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 184640858, now seen corresponding path program 253 times [2021-06-05 07:22:14,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:14,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371915685] [2021-06-05 07:22:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:14,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:14,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371915685] [2021-06-05 07:22:14,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371915685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:14,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:14,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:14,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356491788] [2021-06-05 07:22:14,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:14,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:14,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:14,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:14,559 INFO L87 Difference]: Start difference. First operand 4383 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:16,085 INFO L93 Difference]: Finished difference Result 5007 states and 16523 transitions. [2021-06-05 07:22:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:22:16,085 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:16,093 INFO L225 Difference]: With dead ends: 5007 [2021-06-05 07:22:16,093 INFO L226 Difference]: Without dead ends: 4964 [2021-06-05 07:22:16,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 982.8ms TimeCoverageRelationStatistics Valid=322, Invalid=3100, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:22:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2021-06-05 07:22:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 4392. [2021-06-05 07:22:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.368253245274425) internal successors, (14790), 4391 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14790 transitions. [2021-06-05 07:22:16,152 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14790 transitions. Word has length 39 [2021-06-05 07:22:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:16,152 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14790 transitions. [2021-06-05 07:22:16,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14790 transitions. [2021-06-05 07:22:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:16,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:16,158 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:16,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 07:22:16,158 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:16,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1934747994, now seen corresponding path program 254 times [2021-06-05 07:22:16,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:16,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845494556] [2021-06-05 07:22:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:16,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:16,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845494556] [2021-06-05 07:22:16,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845494556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:16,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:16,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:16,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942806881] [2021-06-05 07:22:16,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:16,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:16,346 INFO L87 Difference]: Start difference. First operand 4392 states and 14790 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:17,816 INFO L93 Difference]: Finished difference Result 4972 states and 16438 transitions. [2021-06-05 07:22:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:22:17,816 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:17,824 INFO L225 Difference]: With dead ends: 4972 [2021-06-05 07:22:17,824 INFO L226 Difference]: Without dead ends: 4921 [2021-06-05 07:22:17,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 940.9ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:22:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2021-06-05 07:22:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 4392. [2021-06-05 07:22:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3675700296060125) internal successors, (14787), 4391 states have internal predecessors, (14787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14787 transitions. [2021-06-05 07:22:17,887 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14787 transitions. Word has length 39 [2021-06-05 07:22:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:17,887 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14787 transitions. [2021-06-05 07:22:17,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14787 transitions. [2021-06-05 07:22:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:17,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:17,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:17,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 07:22:17,894 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1743000900, now seen corresponding path program 255 times [2021-06-05 07:22:17,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:17,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138900965] [2021-06-05 07:22:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:18,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:18,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138900965] [2021-06-05 07:22:18,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138900965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:18,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:18,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:18,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041140390] [2021-06-05 07:22:18,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:18,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:18,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:18,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:18,083 INFO L87 Difference]: Start difference. First operand 4392 states and 14787 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:19,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:19,517 INFO L93 Difference]: Finished difference Result 4995 states and 16482 transitions. [2021-06-05 07:22:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:22:19,517 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:19,525 INFO L225 Difference]: With dead ends: 4995 [2021-06-05 07:22:19,525 INFO L226 Difference]: Without dead ends: 4949 [2021-06-05 07:22:19,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 913.2ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:22:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2021-06-05 07:22:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4399. [2021-06-05 07:22:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4398 states have (on average 3.3656207366984994) internal successors, (14802), 4398 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 14802 transitions. [2021-06-05 07:22:19,589 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 14802 transitions. Word has length 39 [2021-06-05 07:22:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:19,589 INFO L482 AbstractCegarLoop]: Abstraction has 4399 states and 14802 transitions. [2021-06-05 07:22:19,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 14802 transitions. [2021-06-05 07:22:19,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:19,595 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:19,595 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:19,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 07:22:19,596 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1116898906, now seen corresponding path program 256 times [2021-06-05 07:22:19,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:19,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561842602] [2021-06-05 07:22:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:19,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:19,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561842602] [2021-06-05 07:22:19,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561842602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:19,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:19,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:19,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019471953] [2021-06-05 07:22:19,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:19,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:19,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:19,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:19,787 INFO L87 Difference]: Start difference. First operand 4399 states and 14802 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:21,251 INFO L93 Difference]: Finished difference Result 4958 states and 16391 transitions. [2021-06-05 07:22:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:22:21,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:21,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:21,261 INFO L225 Difference]: With dead ends: 4958 [2021-06-05 07:22:21,262 INFO L226 Difference]: Without dead ends: 4903 [2021-06-05 07:22:21,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 947.2ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:22:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2021-06-05 07:22:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4396. [2021-06-05 07:22:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.3665529010238906) internal successors, (14796), 4395 states have internal predecessors, (14796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14796 transitions. [2021-06-05 07:22:21,332 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14796 transitions. Word has length 39 [2021-06-05 07:22:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:21,332 INFO L482 AbstractCegarLoop]: Abstraction has 4396 states and 14796 transitions. [2021-06-05 07:22:21,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14796 transitions. [2021-06-05 07:22:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:21,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:21,338 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:21,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 07:22:21,339 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:21,339 INFO L82 PathProgramCache]: Analyzing trace with hash -165804212, now seen corresponding path program 257 times [2021-06-05 07:22:21,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:21,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072350863] [2021-06-05 07:22:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:21,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:21,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072350863] [2021-06-05 07:22:21,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072350863] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:21,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:21,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:21,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979896100] [2021-06-05 07:22:21,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:21,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:21,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:21,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:21,535 INFO L87 Difference]: Start difference. First operand 4396 states and 14796 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:22,993 INFO L93 Difference]: Finished difference Result 4942 states and 16351 transitions. [2021-06-05 07:22:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:22:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:23,002 INFO L225 Difference]: With dead ends: 4942 [2021-06-05 07:22:23,002 INFO L226 Difference]: Without dead ends: 4885 [2021-06-05 07:22:23,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 940.9ms TimeCoverageRelationStatistics Valid=295, Invalid=2897, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:22:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2021-06-05 07:22:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4384. [2021-06-05 07:22:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3696098562628336) internal successors, (14769), 4383 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14769 transitions. [2021-06-05 07:22:23,076 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14769 transitions. Word has length 39 [2021-06-05 07:22:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:23,076 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14769 transitions. [2021-06-05 07:22:23,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14769 transitions. [2021-06-05 07:22:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:23,082 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:23,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:23,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 07:22:23,082 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash 574927414, now seen corresponding path program 258 times [2021-06-05 07:22:23,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:23,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020661020] [2021-06-05 07:22:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:23,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:23,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020661020] [2021-06-05 07:22:23,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020661020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:23,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:23,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:23,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804723439] [2021-06-05 07:22:23,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:23,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:23,290 INFO L87 Difference]: Start difference. First operand 4384 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:24,751 INFO L93 Difference]: Finished difference Result 4869 states and 16186 transitions. [2021-06-05 07:22:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:22:24,751 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:24,760 INFO L225 Difference]: With dead ends: 4869 [2021-06-05 07:22:24,760 INFO L226 Difference]: Without dead ends: 4826 [2021-06-05 07:22:24,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 949.8ms TimeCoverageRelationStatistics Valid=282, Invalid=2688, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:22:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-06-05 07:22:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4384. [2021-06-05 07:22:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3691535477983114) internal successors, (14767), 4383 states have internal predecessors, (14767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14767 transitions. [2021-06-05 07:22:24,832 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14767 transitions. Word has length 39 [2021-06-05 07:22:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:24,832 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14767 transitions. [2021-06-05 07:22:24,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14767 transitions. [2021-06-05 07:22:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:24,838 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:24,838 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:24,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 07:22:24,839 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1883282392, now seen corresponding path program 259 times [2021-06-05 07:22:24,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:24,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952498474] [2021-06-05 07:22:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:25,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:25,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952498474] [2021-06-05 07:22:25,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952498474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:25,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:25,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:25,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764418117] [2021-06-05 07:22:25,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:25,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:25,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:25,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:25,025 INFO L87 Difference]: Start difference. First operand 4384 states and 14767 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:26,451 INFO L93 Difference]: Finished difference Result 4871 states and 16187 transitions. [2021-06-05 07:22:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:22:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:26,459 INFO L225 Difference]: With dead ends: 4871 [2021-06-05 07:22:26,460 INFO L226 Difference]: Without dead ends: 4810 [2021-06-05 07:22:26,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 903.8ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:22:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-06-05 07:22:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4368. [2021-06-05 07:22:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.373940920540417) internal successors, (14734), 4367 states have internal predecessors, (14734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14734 transitions. [2021-06-05 07:22:26,524 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14734 transitions. Word has length 39 [2021-06-05 07:22:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:26,524 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14734 transitions. [2021-06-05 07:22:26,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14734 transitions. [2021-06-05 07:22:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:26,530 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:26,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:26,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 07:22:26,530 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 818242360, now seen corresponding path program 260 times [2021-06-05 07:22:26,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:26,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531679376] [2021-06-05 07:22:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:26,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:26,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531679376] [2021-06-05 07:22:26,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531679376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:26,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:26,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:26,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031268001] [2021-06-05 07:22:26,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:26,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:26,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:26,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:26,756 INFO L87 Difference]: Start difference. First operand 4368 states and 14734 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:27,900 INFO L93 Difference]: Finished difference Result 4723 states and 15822 transitions. [2021-06-05 07:22:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:22:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:27,909 INFO L225 Difference]: With dead ends: 4723 [2021-06-05 07:22:27,909 INFO L226 Difference]: Without dead ends: 4660 [2021-06-05 07:22:27,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 743.3ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:22:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2021-06-05 07:22:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4400. [2021-06-05 07:22:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.368492839281655) internal successors, (14818), 4399 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14818 transitions. [2021-06-05 07:22:27,980 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14818 transitions. Word has length 39 [2021-06-05 07:22:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:27,980 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14818 transitions. [2021-06-05 07:22:27,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14818 transitions. [2021-06-05 07:22:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:27,986 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:27,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:27,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 07:22:27,986 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1188819320, now seen corresponding path program 261 times [2021-06-05 07:22:27,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:27,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521668989] [2021-06-05 07:22:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:28,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:28,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521668989] [2021-06-05 07:22:28,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521668989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:28,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:28,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:28,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228559787] [2021-06-05 07:22:28,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:28,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:28,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:28,175 INFO L87 Difference]: Start difference. First operand 4400 states and 14818 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:29,344 INFO L93 Difference]: Finished difference Result 4747 states and 15882 transitions. [2021-06-05 07:22:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:22:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:29,352 INFO L225 Difference]: With dead ends: 4747 [2021-06-05 07:22:29,352 INFO L226 Difference]: Without dead ends: 4624 [2021-06-05 07:22:29,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 723.4ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:22:29,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-06-05 07:22:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4368. [2021-06-05 07:22:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.370277078085642) internal successors, (14718), 4367 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14718 transitions. [2021-06-05 07:22:29,439 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14718 transitions. Word has length 39 [2021-06-05 07:22:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:29,439 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14718 transitions. [2021-06-05 07:22:29,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:29,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14718 transitions. [2021-06-05 07:22:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:29,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:29,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:29,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 07:22:29,445 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:29,446 INFO L82 PathProgramCache]: Analyzing trace with hash 686356922, now seen corresponding path program 262 times [2021-06-05 07:22:29,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:29,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047523623] [2021-06-05 07:22:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:29,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:29,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047523623] [2021-06-05 07:22:29,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047523623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:29,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:29,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621718461] [2021-06-05 07:22:29,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:29,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:29,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:29,634 INFO L87 Difference]: Start difference. First operand 4368 states and 14718 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:30,785 INFO L93 Difference]: Finished difference Result 4707 states and 15768 transitions. [2021-06-05 07:22:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:22:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:30,792 INFO L225 Difference]: With dead ends: 4707 [2021-06-05 07:22:30,793 INFO L226 Difference]: Without dead ends: 4644 [2021-06-05 07:22:30,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 718.4ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:22:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-06-05 07:22:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4368. [2021-06-05 07:22:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.3693611174719487) internal successors, (14714), 4367 states have internal predecessors, (14714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14714 transitions. [2021-06-05 07:22:30,845 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14714 transitions. Word has length 39 [2021-06-05 07:22:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:30,846 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14714 transitions. [2021-06-05 07:22:30,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14714 transitions. [2021-06-05 07:22:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:30,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:30,850 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:30,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 07:22:30,850 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:30,851 INFO L82 PathProgramCache]: Analyzing trace with hash 440864824, now seen corresponding path program 263 times [2021-06-05 07:22:30,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:30,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570959384] [2021-06-05 07:22:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:31,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:31,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570959384] [2021-06-05 07:22:31,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570959384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:31,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:31,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:31,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214974791] [2021-06-05 07:22:31,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:31,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:31,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:31,046 INFO L87 Difference]: Start difference. First operand 4368 states and 14714 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:32,191 INFO L93 Difference]: Finished difference Result 4724 states and 15794 transitions. [2021-06-05 07:22:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:22:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:32,198 INFO L225 Difference]: With dead ends: 4724 [2021-06-05 07:22:32,198 INFO L226 Difference]: Without dead ends: 4681 [2021-06-05 07:22:32,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 699.4ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:22:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2021-06-05 07:22:32,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4374. [2021-06-05 07:22:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.367710953578779) internal successors, (14727), 4373 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14727 transitions. [2021-06-05 07:22:32,257 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14727 transitions. Word has length 39 [2021-06-05 07:22:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:32,257 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14727 transitions. [2021-06-05 07:22:32,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14727 transitions. [2021-06-05 07:22:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:32,262 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:32,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:32,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 07:22:32,263 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1270395994, now seen corresponding path program 264 times [2021-06-05 07:22:32,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:32,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98477221] [2021-06-05 07:22:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:32,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:32,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98477221] [2021-06-05 07:22:32,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98477221] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:32,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:32,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:32,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658186594] [2021-06-05 07:22:32,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:32,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:32,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:32,445 INFO L87 Difference]: Start difference. First operand 4374 states and 14727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:33,538 INFO L93 Difference]: Finished difference Result 4679 states and 15690 transitions. [2021-06-05 07:22:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:22:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:33,547 INFO L225 Difference]: With dead ends: 4679 [2021-06-05 07:22:33,547 INFO L226 Difference]: Without dead ends: 4616 [2021-06-05 07:22:33,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 663.1ms TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:22:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2021-06-05 07:22:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4356. [2021-06-05 07:22:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4355 states have (on average 3.371756601607348) internal successors, (14684), 4355 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 14684 transitions. [2021-06-05 07:22:33,608 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 14684 transitions. Word has length 39 [2021-06-05 07:22:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:33,609 INFO L482 AbstractCegarLoop]: Abstraction has 4356 states and 14684 transitions. [2021-06-05 07:22:33,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 14684 transitions. [2021-06-05 07:22:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:33,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:33,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:33,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 07:22:33,614 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash -742839814, now seen corresponding path program 265 times [2021-06-05 07:22:33,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:33,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426336211] [2021-06-05 07:22:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:33,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:33,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426336211] [2021-06-05 07:22:33,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426336211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:33,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:33,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:33,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419906544] [2021-06-05 07:22:33,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:33,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:33,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:33,799 INFO L87 Difference]: Start difference. First operand 4356 states and 14684 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:35,067 INFO L93 Difference]: Finished difference Result 4742 states and 15847 transitions. [2021-06-05 07:22:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:22:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:35,074 INFO L225 Difference]: With dead ends: 4742 [2021-06-05 07:22:35,074 INFO L226 Difference]: Without dead ends: 4687 [2021-06-05 07:22:35,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 788.4ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:22:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2021-06-05 07:22:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4362. [2021-06-05 07:22:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 3.370098601238248) internal successors, (14697), 4361 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 14697 transitions. [2021-06-05 07:22:35,126 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 14697 transitions. Word has length 39 [2021-06-05 07:22:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:35,126 INFO L482 AbstractCegarLoop]: Abstraction has 4362 states and 14697 transitions. [2021-06-05 07:22:35,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 14697 transitions. [2021-06-05 07:22:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:35,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:35,130 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:35,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 07:22:35,131 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:35,131 INFO L82 PathProgramCache]: Analyzing trace with hash 594218200, now seen corresponding path program 266 times [2021-06-05 07:22:35,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:35,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572669891] [2021-06-05 07:22:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:35,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:35,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572669891] [2021-06-05 07:22:35,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572669891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:35,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:35,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:35,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426490208] [2021-06-05 07:22:35,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:35,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:35,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:35,313 INFO L87 Difference]: Start difference. First operand 4362 states and 14697 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:36,497 INFO L93 Difference]: Finished difference Result 4718 states and 15777 transitions. [2021-06-05 07:22:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:22:36,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:36,505 INFO L225 Difference]: With dead ends: 4718 [2021-06-05 07:22:36,505 INFO L226 Difference]: Without dead ends: 4675 [2021-06-05 07:22:36,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 738.1ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:22:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2021-06-05 07:22:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4368. [2021-06-05 07:22:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.368445156858255) internal successors, (14710), 4367 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14710 transitions. [2021-06-05 07:22:36,567 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14710 transitions. Word has length 39 [2021-06-05 07:22:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:36,568 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14710 transitions. [2021-06-05 07:22:36,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14710 transitions. [2021-06-05 07:22:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:36,573 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:36,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:36,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 07:22:36,574 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 322798650, now seen corresponding path program 267 times [2021-06-05 07:22:36,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:36,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600354206] [2021-06-05 07:22:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:36,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:36,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600354206] [2021-06-05 07:22:36,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600354206] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:36,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:36,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:36,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820009335] [2021-06-05 07:22:36,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:36,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:36,758 INFO L87 Difference]: Start difference. First operand 4368 states and 14710 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:37,914 INFO L93 Difference]: Finished difference Result 4673 states and 15673 transitions. [2021-06-05 07:22:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:22:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:37,922 INFO L225 Difference]: With dead ends: 4673 [2021-06-05 07:22:37,922 INFO L226 Difference]: Without dead ends: 4612 [2021-06-05 07:22:37,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 725.8ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:22:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2021-06-05 07:22:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 4352. [2021-06-05 07:22:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 3.3725580326361757) internal successors, (14674), 4351 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 14674 transitions. [2021-06-05 07:22:37,980 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 14674 transitions. Word has length 39 [2021-06-05 07:22:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:37,980 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 14674 transitions. [2021-06-05 07:22:37,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 14674 transitions. [2021-06-05 07:22:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:37,986 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:37,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:37,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 07:22:37,986 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -918380712, now seen corresponding path program 268 times [2021-06-05 07:22:37,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:37,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369092796] [2021-06-05 07:22:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:38,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:38,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369092796] [2021-06-05 07:22:38,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369092796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:38,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:38,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:38,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552249935] [2021-06-05 07:22:38,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:38,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:38,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:38,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:38,172 INFO L87 Difference]: Start difference. First operand 4352 states and 14674 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:39,369 INFO L93 Difference]: Finished difference Result 4727 states and 15830 transitions. [2021-06-05 07:22:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:22:39,369 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:39,376 INFO L225 Difference]: With dead ends: 4727 [2021-06-05 07:22:39,377 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 07:22:39,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 735.9ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:22:39,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 07:22:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4358. [2021-06-05 07:22:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.3713564379159973) internal successors, (14689), 4357 states have internal predecessors, (14689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 14689 transitions. [2021-06-05 07:22:39,431 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 14689 transitions. Word has length 39 [2021-06-05 07:22:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:39,431 INFO L482 AbstractCegarLoop]: Abstraction has 4358 states and 14689 transitions. [2021-06-05 07:22:39,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:39,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 14689 transitions. [2021-06-05 07:22:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:39,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:39,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:39,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 07:22:39,436 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1123937882, now seen corresponding path program 269 times [2021-06-05 07:22:39,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:39,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748899943] [2021-06-05 07:22:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:39,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:39,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748899943] [2021-06-05 07:22:39,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748899943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:39,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:39,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:39,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280693036] [2021-06-05 07:22:39,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:39,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:39,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:39,620 INFO L87 Difference]: Start difference. First operand 4358 states and 14689 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:40,883 INFO L93 Difference]: Finished difference Result 4758 states and 15877 transitions. [2021-06-05 07:22:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:22:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:40,892 INFO L225 Difference]: With dead ends: 4758 [2021-06-05 07:22:40,892 INFO L226 Difference]: Without dead ends: 4703 [2021-06-05 07:22:40,892 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 781.3ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:22:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-06-05 07:22:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4376. [2021-06-05 07:22:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.365942857142857) internal successors, (14726), 4375 states have internal predecessors, (14726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14726 transitions. [2021-06-05 07:22:40,961 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14726 transitions. Word has length 39 [2021-06-05 07:22:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:40,961 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14726 transitions. [2021-06-05 07:22:40,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14726 transitions. [2021-06-05 07:22:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:40,967 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:40,967 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:40,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 07:22:40,967 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:40,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:40,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1833971400, now seen corresponding path program 270 times [2021-06-05 07:22:40,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:40,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020577697] [2021-06-05 07:22:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:41,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:41,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020577697] [2021-06-05 07:22:41,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020577697] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:41,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:41,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:41,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916797977] [2021-06-05 07:22:41,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:41,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:41,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:41,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:41,155 INFO L87 Difference]: Start difference. First operand 4376 states and 14726 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:42,337 INFO L93 Difference]: Finished difference Result 4734 states and 15807 transitions. [2021-06-05 07:22:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:22:42,337 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:42,345 INFO L225 Difference]: With dead ends: 4734 [2021-06-05 07:22:42,345 INFO L226 Difference]: Without dead ends: 4691 [2021-06-05 07:22:42,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 730.8ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:22:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-06-05 07:22:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4382. [2021-06-05 07:22:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.3643003880392603) internal successors, (14739), 4381 states have internal predecessors, (14739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14739 transitions. [2021-06-05 07:22:42,407 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14739 transitions. Word has length 39 [2021-06-05 07:22:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:42,407 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14739 transitions. [2021-06-05 07:22:42,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14739 transitions. [2021-06-05 07:22:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:42,412 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:42,412 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:42,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 07:22:42,412 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2105390950, now seen corresponding path program 271 times [2021-06-05 07:22:42,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:42,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562977488] [2021-06-05 07:22:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:42,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:42,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562977488] [2021-06-05 07:22:42,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562977488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:42,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:42,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:42,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733065547] [2021-06-05 07:22:42,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:42,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:42,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:42,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:42,596 INFO L87 Difference]: Start difference. First operand 4382 states and 14739 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:43,777 INFO L93 Difference]: Finished difference Result 4689 states and 15703 transitions. [2021-06-05 07:22:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:22:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:43,785 INFO L225 Difference]: With dead ends: 4689 [2021-06-05 07:22:43,786 INFO L226 Difference]: Without dead ends: 4598 [2021-06-05 07:22:43,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 718.0ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:22:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2021-06-05 07:22:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4336. [2021-06-05 07:22:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4335 states have (on average 3.3753171856978086) internal successors, (14632), 4335 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 14632 transitions. [2021-06-05 07:22:43,856 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 14632 transitions. Word has length 39 [2021-06-05 07:22:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:43,856 INFO L482 AbstractCegarLoop]: Abstraction has 4336 states and 14632 transitions. [2021-06-05 07:22:43,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 14632 transitions. [2021-06-05 07:22:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:43,862 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:43,862 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:43,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 07:22:43,862 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:43,862 INFO L82 PathProgramCache]: Analyzing trace with hash 563047592, now seen corresponding path program 272 times [2021-06-05 07:22:43,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:43,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300210210] [2021-06-05 07:22:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:44,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:44,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300210210] [2021-06-05 07:22:44,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300210210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:44,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:44,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:44,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440705198] [2021-06-05 07:22:44,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:44,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:44,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:44,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:44,047 INFO L87 Difference]: Start difference. First operand 4336 states and 14632 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:46,053 INFO L93 Difference]: Finished difference Result 6700 states and 22296 transitions. [2021-06-05 07:22:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 07:22:46,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:46,064 INFO L225 Difference]: With dead ends: 6700 [2021-06-05 07:22:46,064 INFO L226 Difference]: Without dead ends: 6645 [2021-06-05 07:22:46,064 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1233.9ms TimeCoverageRelationStatistics Valid=433, Invalid=4537, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 07:22:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2021-06-05 07:22:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 4355. [2021-06-05 07:22:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3759761139182363) internal successors, (14699), 4354 states have internal predecessors, (14699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14699 transitions. [2021-06-05 07:22:46,132 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14699 transitions. Word has length 39 [2021-06-05 07:22:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:46,132 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14699 transitions. [2021-06-05 07:22:46,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14699 transitions. [2021-06-05 07:22:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:46,137 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:46,137 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:46,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 07:22:46,138 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:46,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:46,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1735699814, now seen corresponding path program 273 times [2021-06-05 07:22:46,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:46,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450448920] [2021-06-05 07:22:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:46,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:46,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450448920] [2021-06-05 07:22:46,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450448920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:46,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:46,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:46,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345487290] [2021-06-05 07:22:46,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:46,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:46,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:46,323 INFO L87 Difference]: Start difference. First operand 4355 states and 14699 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:48,631 INFO L93 Difference]: Finished difference Result 7470 states and 24893 transitions. [2021-06-05 07:22:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 07:22:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:48,644 INFO L225 Difference]: With dead ends: 7470 [2021-06-05 07:22:48,644 INFO L226 Difference]: Without dead ends: 7347 [2021-06-05 07:22:48,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1372.6ms TimeCoverageRelationStatistics Valid=480, Invalid=5372, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 07:22:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2021-06-05 07:22:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 4359. [2021-06-05 07:22:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3765488756310233) internal successors, (14715), 4358 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14715 transitions. [2021-06-05 07:22:48,743 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14715 transitions. Word has length 39 [2021-06-05 07:22:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:48,743 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14715 transitions. [2021-06-05 07:22:48,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14715 transitions. [2021-06-05 07:22:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:48,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:48,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:48,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 07:22:48,749 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash 758773620, now seen corresponding path program 274 times [2021-06-05 07:22:48,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:48,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332721592] [2021-06-05 07:22:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:48,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:48,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332721592] [2021-06-05 07:22:48,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332721592] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:48,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:48,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:48,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309796312] [2021-06-05 07:22:48,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:48,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:48,935 INFO L87 Difference]: Start difference. First operand 4359 states and 14715 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:50,747 INFO L93 Difference]: Finished difference Result 6599 states and 22019 transitions. [2021-06-05 07:22:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 07:22:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:50,758 INFO L225 Difference]: With dead ends: 6599 [2021-06-05 07:22:50,759 INFO L226 Difference]: Without dead ends: 6508 [2021-06-05 07:22:50,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1079.0ms TimeCoverageRelationStatistics Valid=374, Invalid=3916, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:22:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-06-05 07:22:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 4365. [2021-06-05 07:22:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3739688359303392) internal successors, (14724), 4364 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14724 transitions. [2021-06-05 07:22:50,831 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14724 transitions. Word has length 39 [2021-06-05 07:22:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:50,831 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 14724 transitions. [2021-06-05 07:22:50,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14724 transitions. [2021-06-05 07:22:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:50,836 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:50,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:50,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 07:22:50,836 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:50,837 INFO L82 PathProgramCache]: Analyzing trace with hash -743708586, now seen corresponding path program 275 times [2021-06-05 07:22:50,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:50,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803006462] [2021-06-05 07:22:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:51,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:51,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803006462] [2021-06-05 07:22:51,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803006462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:51,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:51,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:51,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546721466] [2021-06-05 07:22:51,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:51,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:51,022 INFO L87 Difference]: Start difference. First operand 4365 states and 14724 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:53,199 INFO L93 Difference]: Finished difference Result 7458 states and 24916 transitions. [2021-06-05 07:22:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 07:22:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:53,211 INFO L225 Difference]: With dead ends: 7458 [2021-06-05 07:22:53,211 INFO L226 Difference]: Without dead ends: 7358 [2021-06-05 07:22:53,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 1223.4ms TimeCoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 07:22:53,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2021-06-05 07:22:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4353. [2021-06-05 07:22:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 3.374080882352941) internal successors, (14684), 4352 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 14684 transitions. [2021-06-05 07:22:53,288 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 14684 transitions. Word has length 39 [2021-06-05 07:22:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:53,288 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 14684 transitions. [2021-06-05 07:22:53,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 14684 transitions. [2021-06-05 07:22:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:53,293 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:53,294 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:53,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 07:22:53,294 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:53,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:53,294 INFO L82 PathProgramCache]: Analyzing trace with hash 431162154, now seen corresponding path program 276 times [2021-06-05 07:22:53,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:53,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207009487] [2021-06-05 07:22:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:53,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:53,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207009487] [2021-06-05 07:22:53,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207009487] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:53,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:53,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:53,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794989872] [2021-06-05 07:22:53,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:53,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:53,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:53,479 INFO L87 Difference]: Start difference. First operand 4353 states and 14684 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:55,375 INFO L93 Difference]: Finished difference Result 4944 states and 16360 transitions. [2021-06-05 07:22:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 07:22:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:55,382 INFO L225 Difference]: With dead ends: 4944 [2021-06-05 07:22:55,383 INFO L226 Difference]: Without dead ends: 4889 [2021-06-05 07:22:55,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1309.1ms TimeCoverageRelationStatistics Valid=414, Invalid=4278, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 07:22:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2021-06-05 07:22:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4379. [2021-06-05 07:22:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.366605756052992) internal successors, (14739), 4378 states have internal predecessors, (14739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14739 transitions. [2021-06-05 07:22:55,442 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14739 transitions. Word has length 39 [2021-06-05 07:22:55,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:55,442 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14739 transitions. [2021-06-05 07:22:55,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14739 transitions. [2021-06-05 07:22:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:55,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:55,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:55,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 07:22:55,447 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1603814376, now seen corresponding path program 277 times [2021-06-05 07:22:55,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:55,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286092843] [2021-06-05 07:22:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:55,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:55,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286092843] [2021-06-05 07:22:55,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286092843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:55,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:55,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:55,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754904406] [2021-06-05 07:22:55,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:55,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:55,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:55,632 INFO L87 Difference]: Start difference. First operand 4379 states and 14739 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:57,407 INFO L93 Difference]: Finished difference Result 4896 states and 16242 transitions. [2021-06-05 07:22:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:22:57,407 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:57,415 INFO L225 Difference]: With dead ends: 4896 [2021-06-05 07:22:57,415 INFO L226 Difference]: Without dead ends: 4836 [2021-06-05 07:22:57,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 1223.6ms TimeCoverageRelationStatistics Valid=385, Invalid=3775, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:22:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-06-05 07:22:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4385. [2021-06-05 07:22:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.365647810218978) internal successors, (14755), 4384 states have internal predecessors, (14755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14755 transitions. [2021-06-05 07:22:57,467 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14755 transitions. Word has length 39 [2021-06-05 07:22:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:57,468 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14755 transitions. [2021-06-05 07:22:57,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14755 transitions. [2021-06-05 07:22:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:57,472 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:57,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:57,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 07:22:57,472 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1536069496, now seen corresponding path program 278 times [2021-06-05 07:22:57,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:57,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078242834] [2021-06-05 07:22:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:57,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:57,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078242834] [2021-06-05 07:22:57,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078242834] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:57,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:57,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:57,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827174854] [2021-06-05 07:22:57,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:57,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:57,657 INFO L87 Difference]: Start difference. First operand 4385 states and 14755 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:22:59,348 INFO L93 Difference]: Finished difference Result 4849 states and 16104 transitions. [2021-06-05 07:22:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 07:22:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:22:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:22:59,356 INFO L225 Difference]: With dead ends: 4849 [2021-06-05 07:22:59,356 INFO L226 Difference]: Without dead ends: 4806 [2021-06-05 07:22:59,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1114.1ms TimeCoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 07:22:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4806 states. [2021-06-05 07:22:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4806 to 4391. [2021-06-05 07:22:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.364009111617312) internal successors, (14768), 4390 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14768 transitions. [2021-06-05 07:22:59,414 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14768 transitions. Word has length 39 [2021-06-05 07:22:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:22:59,414 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14768 transitions. [2021-06-05 07:22:59,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:22:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14768 transitions. [2021-06-05 07:22:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:22:59,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:22:59,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:22:59,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 07:22:59,419 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:22:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:22:59,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1008790664, now seen corresponding path program 279 times [2021-06-05 07:22:59,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:22:59,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703460600] [2021-06-05 07:22:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:22:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:22:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:22:59,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:22:59,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703460600] [2021-06-05 07:22:59,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703460600] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:22:59,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:22:59,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:22:59,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51475358] [2021-06-05 07:22:59,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:22:59,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:22:59,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:22:59,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:22:59,604 INFO L87 Difference]: Start difference. First operand 4391 states and 14768 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:01,222 INFO L93 Difference]: Finished difference Result 4852 states and 16125 transitions. [2021-06-05 07:23:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:23:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:01,231 INFO L225 Difference]: With dead ends: 4852 [2021-06-05 07:23:01,231 INFO L226 Difference]: Without dead ends: 4801 [2021-06-05 07:23:01,231 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1061.1ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:23:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-06-05 07:23:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4391. [2021-06-05 07:23:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.3633257403189067) internal successors, (14765), 4390 states have internal predecessors, (14765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14765 transitions. [2021-06-05 07:23:01,301 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14765 transitions. Word has length 39 [2021-06-05 07:23:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:01,301 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14765 transitions. [2021-06-05 07:23:01,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14765 transitions. [2021-06-05 07:23:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:01,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:01,307 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:01,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 07:23:01,308 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash -391572262, now seen corresponding path program 280 times [2021-06-05 07:23:01,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:01,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185923462] [2021-06-05 07:23:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:01,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:01,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185923462] [2021-06-05 07:23:01,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185923462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:01,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:01,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:01,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724477659] [2021-06-05 07:23:01,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:01,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:01,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:01,531 INFO L87 Difference]: Start difference. First operand 4391 states and 14765 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:03,195 INFO L93 Difference]: Finished difference Result 4845 states and 16081 transitions. [2021-06-05 07:23:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:23:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:03,204 INFO L225 Difference]: With dead ends: 4845 [2021-06-05 07:23:03,204 INFO L226 Difference]: Without dead ends: 4799 [2021-06-05 07:23:03,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1156.6ms TimeCoverageRelationStatistics Valid=335, Invalid=3325, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:23:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-06-05 07:23:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4398. [2021-06-05 07:23:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 3.361382760973391) internal successors, (14780), 4397 states have internal predecessors, (14780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 14780 transitions. [2021-06-05 07:23:03,268 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 14780 transitions. Word has length 39 [2021-06-05 07:23:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:03,268 INFO L482 AbstractCegarLoop]: Abstraction has 4398 states and 14780 transitions. [2021-06-05 07:23:03,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 14780 transitions. [2021-06-05 07:23:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:03,274 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:03,274 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:03,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 07:23:03,274 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1826639752, now seen corresponding path program 281 times [2021-06-05 07:23:03,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:03,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776543983] [2021-06-05 07:23:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:03,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:03,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776543983] [2021-06-05 07:23:03,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776543983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:03,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:03,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:03,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040280425] [2021-06-05 07:23:03,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:03,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:03,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:03,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:03,460 INFO L87 Difference]: Start difference. First operand 4398 states and 14780 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:05,056 INFO L93 Difference]: Finished difference Result 4838 states and 16078 transitions. [2021-06-05 07:23:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:23:05,057 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:05,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:05,064 INFO L225 Difference]: With dead ends: 4838 [2021-06-05 07:23:05,065 INFO L226 Difference]: Without dead ends: 4783 [2021-06-05 07:23:05,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1044.0ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:23:05,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-06-05 07:23:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4395. [2021-06-05 07:23:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 3.3623122439690487) internal successors, (14774), 4394 states have internal predecessors, (14774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14774 transitions. [2021-06-05 07:23:05,125 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14774 transitions. Word has length 39 [2021-06-05 07:23:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:05,125 INFO L482 AbstractCegarLoop]: Abstraction has 4395 states and 14774 transitions. [2021-06-05 07:23:05,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14774 transitions. [2021-06-05 07:23:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:05,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:05,131 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:05,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 07:23:05,131 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:05,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1185624426, now seen corresponding path program 282 times [2021-06-05 07:23:05,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:05,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526094781] [2021-06-05 07:23:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:05,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:05,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526094781] [2021-06-05 07:23:05,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526094781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:05,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:05,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:05,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808612421] [2021-06-05 07:23:05,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:05,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:05,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:05,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:05,316 INFO L87 Difference]: Start difference. First operand 4395 states and 14774 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:07,008 INFO L93 Difference]: Finished difference Result 4891 states and 16194 transitions. [2021-06-05 07:23:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 07:23:07,009 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:07,016 INFO L225 Difference]: With dead ends: 4891 [2021-06-05 07:23:07,016 INFO L226 Difference]: Without dead ends: 4834 [2021-06-05 07:23:07,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1103.0ms TimeCoverageRelationStatistics Valid=344, Invalid=3562, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 07:23:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2021-06-05 07:23:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4395. [2021-06-05 07:23:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 3.362084660901229) internal successors, (14773), 4394 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14773 transitions. [2021-06-05 07:23:07,071 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14773 transitions. Word has length 39 [2021-06-05 07:23:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:07,071 INFO L482 AbstractCegarLoop]: Abstraction has 4395 states and 14773 transitions. [2021-06-05 07:23:07,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14773 transitions. [2021-06-05 07:23:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:07,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:07,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:07,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 07:23:07,076 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:07,076 INFO L82 PathProgramCache]: Analyzing trace with hash -531853754, now seen corresponding path program 283 times [2021-06-05 07:23:07,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:07,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569197444] [2021-06-05 07:23:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:07,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:07,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569197444] [2021-06-05 07:23:07,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569197444] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:07,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:07,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:07,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231014790] [2021-06-05 07:23:07,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:07,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:07,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:07,260 INFO L87 Difference]: Start difference. First operand 4395 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:08,959 INFO L93 Difference]: Finished difference Result 4892 states and 16195 transitions. [2021-06-05 07:23:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 07:23:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:08,967 INFO L225 Difference]: With dead ends: 4892 [2021-06-05 07:23:08,967 INFO L226 Difference]: Without dead ends: 4833 [2021-06-05 07:23:08,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1115.0ms TimeCoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 07:23:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2021-06-05 07:23:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4394. [2021-06-05 07:23:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.362394718870931) internal successors, (14771), 4393 states have internal predecessors, (14771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14771 transitions. [2021-06-05 07:23:09,026 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14771 transitions. Word has length 39 [2021-06-05 07:23:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:09,026 INFO L482 AbstractCegarLoop]: Abstraction has 4394 states and 14771 transitions. [2021-06-05 07:23:09,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14771 transitions. [2021-06-05 07:23:09,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:09,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:09,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:09,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 07:23:09,032 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:09,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1770586282, now seen corresponding path program 284 times [2021-06-05 07:23:09,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:09,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096530383] [2021-06-05 07:23:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:09,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:09,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096530383] [2021-06-05 07:23:09,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096530383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:09,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:09,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:09,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873420640] [2021-06-05 07:23:09,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:09,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:09,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:09,216 INFO L87 Difference]: Start difference. First operand 4394 states and 14771 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:10,606 INFO L93 Difference]: Finished difference Result 4793 states and 15944 transitions. [2021-06-05 07:23:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:23:10,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:10,615 INFO L225 Difference]: With dead ends: 4793 [2021-06-05 07:23:10,615 INFO L226 Difference]: Without dead ends: 4718 [2021-06-05 07:23:10,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 879.6ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:23:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4718 states. [2021-06-05 07:23:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4718 to 4380. [2021-06-05 07:23:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3649234985156427) internal successors, (14735), 4379 states have internal predecessors, (14735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14735 transitions. [2021-06-05 07:23:10,683 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14735 transitions. Word has length 39 [2021-06-05 07:23:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:10,683 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14735 transitions. [2021-06-05 07:23:10,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14735 transitions. [2021-06-05 07:23:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:10,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:10,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:10,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 07:23:10,690 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:10,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1606839466, now seen corresponding path program 285 times [2021-06-05 07:23:10,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:10,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368180006] [2021-06-05 07:23:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:10,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:10,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368180006] [2021-06-05 07:23:10,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368180006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:10,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:10,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:10,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186081772] [2021-06-05 07:23:10,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:10,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:10,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:10,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:10,875 INFO L87 Difference]: Start difference. First operand 4380 states and 14735 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:12,254 INFO L93 Difference]: Finished difference Result 4694 states and 15714 transitions. [2021-06-05 07:23:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:23:12,254 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:12,261 INFO L225 Difference]: With dead ends: 4694 [2021-06-05 07:23:12,262 INFO L226 Difference]: Without dead ends: 4607 [2021-06-05 07:23:12,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 885.4ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:23:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2021-06-05 07:23:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4338. [2021-06-05 07:23:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3760664053493197) internal successors, (14642), 4337 states have internal predecessors, (14642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14642 transitions. [2021-06-05 07:23:12,321 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14642 transitions. Word has length 39 [2021-06-05 07:23:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:12,321 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 14642 transitions. [2021-06-05 07:23:12,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14642 transitions. [2021-06-05 07:23:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:12,326 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:12,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:12,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 07:23:12,326 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:12,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1645436618, now seen corresponding path program 286 times [2021-06-05 07:23:12,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:12,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783619119] [2021-06-05 07:23:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:12,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:12,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783619119] [2021-06-05 07:23:12,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783619119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:12,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:12,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:12,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451528774] [2021-06-05 07:23:12,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:12,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:12,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:12,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:12,503 INFO L87 Difference]: Start difference. First operand 4338 states and 14642 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:14,178 INFO L93 Difference]: Finished difference Result 5466 states and 18495 transitions. [2021-06-05 07:23:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:23:14,179 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:14,188 INFO L225 Difference]: With dead ends: 5466 [2021-06-05 07:23:14,188 INFO L226 Difference]: Without dead ends: 5399 [2021-06-05 07:23:14,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 1074.4ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:23:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2021-06-05 07:23:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 4476. [2021-06-05 07:23:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.373854748603352) internal successors, (15098), 4475 states have internal predecessors, (15098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15098 transitions. [2021-06-05 07:23:14,260 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15098 transitions. Word has length 39 [2021-06-05 07:23:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:14,260 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15098 transitions. [2021-06-05 07:23:14,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15098 transitions. [2021-06-05 07:23:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:14,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:14,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:14,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 07:23:14,266 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash -74179352, now seen corresponding path program 287 times [2021-06-05 07:23:14,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:14,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862423016] [2021-06-05 07:23:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:14,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:14,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862423016] [2021-06-05 07:23:14,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862423016] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:14,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:14,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:14,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089314987] [2021-06-05 07:23:14,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:14,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:14,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:14,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:14,437 INFO L87 Difference]: Start difference. First operand 4476 states and 15098 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:16,635 INFO L93 Difference]: Finished difference Result 5562 states and 18756 transitions. [2021-06-05 07:23:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 07:23:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:16,644 INFO L225 Difference]: With dead ends: 5562 [2021-06-05 07:23:16,644 INFO L226 Difference]: Without dead ends: 5519 [2021-06-05 07:23:16,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 1478.6ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 07:23:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-06-05 07:23:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4482. [2021-06-05 07:23:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4481 states have (on average 3.372238339656327) internal successors, (15111), 4481 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 15111 transitions. [2021-06-05 07:23:16,735 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 15111 transitions. Word has length 39 [2021-06-05 07:23:16,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:16,735 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 15111 transitions. [2021-06-05 07:23:16,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 15111 transitions. [2021-06-05 07:23:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:16,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:16,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:16,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 07:23:16,741 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1854777654, now seen corresponding path program 288 times [2021-06-05 07:23:16,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:16,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830877943] [2021-06-05 07:23:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:16,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:16,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830877943] [2021-06-05 07:23:16,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830877943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:16,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:16,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:16,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95762527] [2021-06-05 07:23:16,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:16,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:16,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:16,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:16,905 INFO L87 Difference]: Start difference. First operand 4482 states and 15111 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:19,061 INFO L93 Difference]: Finished difference Result 5493 states and 18576 transitions. [2021-06-05 07:23:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 07:23:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:19,071 INFO L225 Difference]: With dead ends: 5493 [2021-06-05 07:23:19,071 INFO L226 Difference]: Without dead ends: 5429 [2021-06-05 07:23:19,072 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1456.7ms TimeCoverageRelationStatistics Valid=469, Invalid=4787, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 07:23:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2021-06-05 07:23:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 4464. [2021-06-05 07:23:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4463 states have (on average 3.374411830607215) internal successors, (15060), 4463 states have internal predecessors, (15060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 15060 transitions. [2021-06-05 07:23:19,147 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 15060 transitions. Word has length 39 [2021-06-05 07:23:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:19,147 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 15060 transitions. [2021-06-05 07:23:19,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 15060 transitions. [2021-06-05 07:23:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:19,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:19,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:19,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 07:23:19,154 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:19,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2031374026, now seen corresponding path program 289 times [2021-06-05 07:23:19,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:19,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665070566] [2021-06-05 07:23:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:19,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:19,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665070566] [2021-06-05 07:23:19,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665070566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:19,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:19,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:19,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74987829] [2021-06-05 07:23:19,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:19,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:19,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:19,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:19,327 INFO L87 Difference]: Start difference. First operand 4464 states and 15060 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:21,366 INFO L93 Difference]: Finished difference Result 5504 states and 18584 transitions. [2021-06-05 07:23:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:23:21,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:21,378 INFO L225 Difference]: With dead ends: 5504 [2021-06-05 07:23:21,378 INFO L226 Difference]: Without dead ends: 5374 [2021-06-05 07:23:21,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 1318.6ms TimeCoverageRelationStatistics Valid=402, Invalid=4154, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:23:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2021-06-05 07:23:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 4440. [2021-06-05 07:23:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4439 states have (on average 3.376436134264474) internal successors, (14988), 4439 states have internal predecessors, (14988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 14988 transitions. [2021-06-05 07:23:21,470 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 14988 transitions. Word has length 39 [2021-06-05 07:23:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:21,470 INFO L482 AbstractCegarLoop]: Abstraction has 4440 states and 14988 transitions. [2021-06-05 07:23:21,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 14988 transitions. [2021-06-05 07:23:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:21,476 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:21,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:21,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 07:23:21,476 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash -425641418, now seen corresponding path program 290 times [2021-06-05 07:23:21,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:21,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409815261] [2021-06-05 07:23:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:21,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:21,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409815261] [2021-06-05 07:23:21,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409815261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:21,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:21,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:21,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971886739] [2021-06-05 07:23:21,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:21,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:21,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:21,661 INFO L87 Difference]: Start difference. First operand 4440 states and 14988 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:23,584 INFO L93 Difference]: Finished difference Result 5550 states and 18717 transitions. [2021-06-05 07:23:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 07:23:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:23,593 INFO L225 Difference]: With dead ends: 5550 [2021-06-05 07:23:23,593 INFO L226 Difference]: Without dead ends: 5483 [2021-06-05 07:23:23,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1267.6ms TimeCoverageRelationStatistics Valid=427, Invalid=4265, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 07:23:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2021-06-05 07:23:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 4466. [2021-06-05 07:23:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.374468085106383) internal successors, (15067), 4465 states have internal predecessors, (15067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15067 transitions. [2021-06-05 07:23:23,657 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15067 transitions. Word has length 39 [2021-06-05 07:23:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:23,657 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15067 transitions. [2021-06-05 07:23:23,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15067 transitions. [2021-06-05 07:23:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:23,663 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:23,663 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:23,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 07:23:23,663 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:23,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2145257388, now seen corresponding path program 291 times [2021-06-05 07:23:23,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:23,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891728118] [2021-06-05 07:23:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:23,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:23,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891728118] [2021-06-05 07:23:23,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891728118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:23,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:23,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:23,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899176446] [2021-06-05 07:23:23,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:23,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:23,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:23,847 INFO L87 Difference]: Start difference. First operand 4466 states and 15067 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:26,371 INFO L93 Difference]: Finished difference Result 5679 states and 19044 transitions. [2021-06-05 07:23:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 07:23:26,371 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:26,380 INFO L225 Difference]: With dead ends: 5679 [2021-06-05 07:23:26,381 INFO L226 Difference]: Without dead ends: 5636 [2021-06-05 07:23:26,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 1718.2ms TimeCoverageRelationStatistics Valid=570, Invalid=6236, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 07:23:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2021-06-05 07:23:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 4472. [2021-06-05 07:23:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.372847237754417) internal successors, (15080), 4471 states have internal predecessors, (15080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15080 transitions. [2021-06-05 07:23:26,447 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15080 transitions. Word has length 39 [2021-06-05 07:23:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:26,448 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15080 transitions. [2021-06-05 07:23:26,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15080 transitions. [2021-06-05 07:23:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:26,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:26,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:26,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 07:23:26,453 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:26,453 INFO L82 PathProgramCache]: Analyzing trace with hash 369111606, now seen corresponding path program 292 times [2021-06-05 07:23:26,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:26,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214854110] [2021-06-05 07:23:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:26,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:26,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214854110] [2021-06-05 07:23:26,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214854110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:26,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:26,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:26,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405061708] [2021-06-05 07:23:26,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:26,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:26,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:26,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:26,645 INFO L87 Difference]: Start difference. First operand 4472 states and 15080 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:29,097 INFO L93 Difference]: Finished difference Result 5610 states and 18864 transitions. [2021-06-05 07:23:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 07:23:29,098 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:29,109 INFO L225 Difference]: With dead ends: 5610 [2021-06-05 07:23:29,109 INFO L226 Difference]: Without dead ends: 5546 [2021-06-05 07:23:29,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1692.1ms TimeCoverageRelationStatistics Valid=544, Invalid=5776, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 07:23:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-06-05 07:23:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 4454. [2021-06-05 07:23:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3768246126207053) internal successors, (15037), 4453 states have internal predecessors, (15037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15037 transitions. [2021-06-05 07:23:29,178 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15037 transitions. Word has length 39 [2021-06-05 07:23:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:29,178 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15037 transitions. [2021-06-05 07:23:29,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15037 transitions. [2021-06-05 07:23:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:29,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:29,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:29,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 07:23:29,184 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:29,184 INFO L82 PathProgramCache]: Analyzing trace with hash 989546006, now seen corresponding path program 293 times [2021-06-05 07:23:29,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:29,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761546986] [2021-06-05 07:23:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:29,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:29,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761546986] [2021-06-05 07:23:29,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761546986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:29,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:29,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:29,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329473290] [2021-06-05 07:23:29,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:29,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:29,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:29,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:29,370 INFO L87 Difference]: Start difference. First operand 4454 states and 15037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:30,997 INFO L93 Difference]: Finished difference Result 5450 states and 18401 transitions. [2021-06-05 07:23:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:23:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:31,006 INFO L225 Difference]: With dead ends: 5450 [2021-06-05 07:23:31,006 INFO L226 Difference]: Without dead ends: 5383 [2021-06-05 07:23:31,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1072.5ms TimeCoverageRelationStatistics Valid=346, Invalid=3314, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:23:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-06-05 07:23:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4458. [2021-06-05 07:23:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.376037693515818) internal successors, (15047), 4457 states have internal predecessors, (15047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15047 transitions. [2021-06-05 07:23:31,070 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15047 transitions. Word has length 39 [2021-06-05 07:23:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:31,070 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15047 transitions. [2021-06-05 07:23:31,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15047 transitions. [2021-06-05 07:23:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:31,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:31,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:31,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 07:23:31,075 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:31,076 INFO L82 PathProgramCache]: Analyzing trace with hash 858951158, now seen corresponding path program 294 times [2021-06-05 07:23:31,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:31,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302625880] [2021-06-05 07:23:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:31,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:31,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302625880] [2021-06-05 07:23:31,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302625880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:31,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:31,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:31,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276084968] [2021-06-05 07:23:31,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:31,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:31,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:31,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:31,258 INFO L87 Difference]: Start difference. First operand 4458 states and 15047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:32,860 INFO L93 Difference]: Finished difference Result 5459 states and 18385 transitions. [2021-06-05 07:23:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 07:23:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:32,869 INFO L225 Difference]: With dead ends: 5459 [2021-06-05 07:23:32,869 INFO L226 Difference]: Without dead ends: 5396 [2021-06-05 07:23:32,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 1060.0ms TimeCoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:23:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-06-05 07:23:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 4458. [2021-06-05 07:23:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.375140228853489) internal successors, (15043), 4457 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15043 transitions. [2021-06-05 07:23:32,938 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15043 transitions. Word has length 39 [2021-06-05 07:23:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:32,938 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15043 transitions. [2021-06-05 07:23:32,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15043 transitions. [2021-06-05 07:23:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:32,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:32,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:32,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 07:23:32,944 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash 723272566, now seen corresponding path program 295 times [2021-06-05 07:23:32,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:32,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470573673] [2021-06-05 07:23:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:33,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:33,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470573673] [2021-06-05 07:23:33,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470573673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:33,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:33,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:33,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742005994] [2021-06-05 07:23:33,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:33,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:33,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:33,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:33,131 INFO L87 Difference]: Start difference. First operand 4458 states and 15043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:35,363 INFO L93 Difference]: Finished difference Result 5626 states and 18810 transitions. [2021-06-05 07:23:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 07:23:35,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:35,372 INFO L225 Difference]: With dead ends: 5626 [2021-06-05 07:23:35,372 INFO L226 Difference]: Without dead ends: 5583 [2021-06-05 07:23:35,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1569.6ms TimeCoverageRelationStatistics Valid=519, Invalid=5333, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 07:23:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2021-06-05 07:23:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 4466. [2021-06-05 07:23:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.373572228443449) internal successors, (15063), 4465 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15063 transitions. [2021-06-05 07:23:35,440 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15063 transitions. Word has length 39 [2021-06-05 07:23:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:35,440 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15063 transitions. [2021-06-05 07:23:35,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15063 transitions. [2021-06-05 07:23:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:35,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:35,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:35,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 07:23:35,446 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:35,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1057325736, now seen corresponding path program 296 times [2021-06-05 07:23:35,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:35,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351453073] [2021-06-05 07:23:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:35,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:35,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351453073] [2021-06-05 07:23:35,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351453073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:35,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:35,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:35,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766892938] [2021-06-05 07:23:35,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:35,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:35,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:35,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:35,653 INFO L87 Difference]: Start difference. First operand 4466 states and 15063 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:37,860 INFO L93 Difference]: Finished difference Result 5614 states and 18772 transitions. [2021-06-05 07:23:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 07:23:37,861 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:37,870 INFO L225 Difference]: With dead ends: 5614 [2021-06-05 07:23:37,870 INFO L226 Difference]: Without dead ends: 5562 [2021-06-05 07:23:37,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1560.4ms TimeCoverageRelationStatistics Valid=511, Invalid=5189, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 07:23:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-06-05 07:23:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 4458. [2021-06-05 07:23:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.375140228853489) internal successors, (15043), 4457 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15043 transitions. [2021-06-05 07:23:37,938 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15043 transitions. Word has length 39 [2021-06-05 07:23:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:37,938 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15043 transitions. [2021-06-05 07:23:37,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15043 transitions. [2021-06-05 07:23:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:37,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:37,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:37,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 07:23:37,944 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1641756136, now seen corresponding path program 297 times [2021-06-05 07:23:37,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:37,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822427691] [2021-06-05 07:23:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:38,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:38,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822427691] [2021-06-05 07:23:38,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822427691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:38,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:38,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:38,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934808189] [2021-06-05 07:23:38,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:38,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:38,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:38,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:38,128 INFO L87 Difference]: Start difference. First operand 4458 states and 15043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:39,866 INFO L93 Difference]: Finished difference Result 5597 states and 18690 transitions. [2021-06-05 07:23:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:23:39,866 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:39,875 INFO L225 Difference]: With dead ends: 5597 [2021-06-05 07:23:39,875 INFO L226 Difference]: Without dead ends: 5542 [2021-06-05 07:23:39,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 1155.4ms TimeCoverageRelationStatistics Valid=396, Invalid=3894, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:23:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-06-05 07:23:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 4460. [2021-06-05 07:23:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4459 states have (on average 3.3742991702175376) internal successors, (15046), 4459 states have internal predecessors, (15046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 15046 transitions. [2021-06-05 07:23:39,942 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 15046 transitions. Word has length 39 [2021-06-05 07:23:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:39,942 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 15046 transitions. [2021-06-05 07:23:39,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 15046 transitions. [2021-06-05 07:23:39,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:39,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:39,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:39,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 07:23:39,948 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:39,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:39,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1480558938, now seen corresponding path program 298 times [2021-06-05 07:23:39,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:39,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891682875] [2021-06-05 07:23:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:40,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:40,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891682875] [2021-06-05 07:23:40,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891682875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:40,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:40,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:40,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808421593] [2021-06-05 07:23:40,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:40,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:40,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:40,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:40,129 INFO L87 Difference]: Start difference. First operand 4460 states and 15046 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:41,816 INFO L93 Difference]: Finished difference Result 5510 states and 18499 transitions. [2021-06-05 07:23:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 07:23:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:41,825 INFO L225 Difference]: With dead ends: 5510 [2021-06-05 07:23:41,826 INFO L226 Difference]: Without dead ends: 5446 [2021-06-05 07:23:41,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1124.7ms TimeCoverageRelationStatistics Valid=379, Invalid=3653, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:23:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-06-05 07:23:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 4454. [2021-06-05 07:23:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3759263417920504) internal successors, (15033), 4453 states have internal predecessors, (15033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15033 transitions. [2021-06-05 07:23:41,895 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15033 transitions. Word has length 39 [2021-06-05 07:23:41,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:41,895 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15033 transitions. [2021-06-05 07:23:41,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15033 transitions. [2021-06-05 07:23:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:41,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:41,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:41,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 07:23:41,901 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:41,901 INFO L82 PathProgramCache]: Analyzing trace with hash 761489384, now seen corresponding path program 299 times [2021-06-05 07:23:41,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:41,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734442049] [2021-06-05 07:23:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:42,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:42,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734442049] [2021-06-05 07:23:42,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734442049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:42,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:42,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:42,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234136888] [2021-06-05 07:23:42,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:42,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:42,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:42,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:42,095 INFO L87 Difference]: Start difference. First operand 4454 states and 15033 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:44,441 INFO L93 Difference]: Finished difference Result 5699 states and 19074 transitions. [2021-06-05 07:23:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 07:23:44,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:44,451 INFO L225 Difference]: With dead ends: 5699 [2021-06-05 07:23:44,451 INFO L226 Difference]: Without dead ends: 5562 [2021-06-05 07:23:44,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1540.7ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 07:23:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-06-05 07:23:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 4462. [2021-06-05 07:23:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 3.3770455054920423) internal successors, (15065), 4461 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 15065 transitions. [2021-06-05 07:23:44,529 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 15065 transitions. Word has length 39 [2021-06-05 07:23:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:44,529 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 15065 transitions. [2021-06-05 07:23:44,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 15065 transitions. [2021-06-05 07:23:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:44,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:44,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:44,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 07:23:44,535 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -733401516, now seen corresponding path program 300 times [2021-06-05 07:23:44,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:44,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079659641] [2021-06-05 07:23:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:44,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:44,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079659641] [2021-06-05 07:23:44,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079659641] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:44,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:44,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:44,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811618293] [2021-06-05 07:23:44,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:44,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:44,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:44,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:44,723 INFO L87 Difference]: Start difference. First operand 4462 states and 15065 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:46,885 INFO L93 Difference]: Finished difference Result 5658 states and 18890 transitions. [2021-06-05 07:23:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 07:23:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:46,894 INFO L225 Difference]: With dead ends: 5658 [2021-06-05 07:23:46,894 INFO L226 Difference]: Without dead ends: 5594 [2021-06-05 07:23:46,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 1507.5ms TimeCoverageRelationStatistics Valid=485, Invalid=5065, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 07:23:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-06-05 07:23:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 4466. [2021-06-05 07:23:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.3762597984322507) internal successors, (15075), 4465 states have internal predecessors, (15075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15075 transitions. [2021-06-05 07:23:46,968 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15075 transitions. Word has length 39 [2021-06-05 07:23:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:46,968 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15075 transitions. [2021-06-05 07:23:46,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15075 transitions. [2021-06-05 07:23:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:46,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:46,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:46,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 07:23:46,974 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:46,974 INFO L82 PathProgramCache]: Analyzing trace with hash 185082054, now seen corresponding path program 301 times [2021-06-05 07:23:46,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:46,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707850838] [2021-06-05 07:23:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:47,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:47,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707850838] [2021-06-05 07:23:47,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707850838] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:47,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:47,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:47,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436371384] [2021-06-05 07:23:47,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:47,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:47,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:47,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:47,167 INFO L87 Difference]: Start difference. First operand 4466 states and 15075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:48,838 INFO L93 Difference]: Finished difference Result 5584 states and 18676 transitions. [2021-06-05 07:23:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:23:48,839 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:48,848 INFO L225 Difference]: With dead ends: 5584 [2021-06-05 07:23:48,848 INFO L226 Difference]: Without dead ends: 5529 [2021-06-05 07:23:48,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1087.9ms TimeCoverageRelationStatistics Valid=351, Invalid=3555, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 07:23:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-06-05 07:23:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4468. [2021-06-05 07:23:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 3.3754197447951646) internal successors, (15078), 4467 states have internal predecessors, (15078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 15078 transitions. [2021-06-05 07:23:48,913 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 15078 transitions. Word has length 39 [2021-06-05 07:23:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:48,913 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 15078 transitions. [2021-06-05 07:23:48,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 15078 transitions. [2021-06-05 07:23:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:48,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:48,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:48,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 07:23:48,919 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1357734276, now seen corresponding path program 302 times [2021-06-05 07:23:48,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:48,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95979132] [2021-06-05 07:23:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:49,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:49,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95979132] [2021-06-05 07:23:49,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95979132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:49,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:49,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:49,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587517173] [2021-06-05 07:23:49,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:49,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:49,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:49,108 INFO L87 Difference]: Start difference. First operand 4468 states and 15078 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:50,790 INFO L93 Difference]: Finished difference Result 5602 states and 18720 transitions. [2021-06-05 07:23:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:23:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:50,799 INFO L225 Difference]: With dead ends: 5602 [2021-06-05 07:23:50,800 INFO L226 Difference]: Without dead ends: 5542 [2021-06-05 07:23:50,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 1117.5ms TimeCoverageRelationStatistics Valid=362, Invalid=3670, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:23:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-06-05 07:23:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 4466. [2021-06-05 07:23:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.375811870100784) internal successors, (15073), 4465 states have internal predecessors, (15073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15073 transitions. [2021-06-05 07:23:50,892 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15073 transitions. Word has length 39 [2021-06-05 07:23:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:50,892 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15073 transitions. [2021-06-05 07:23:50,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15073 transitions. [2021-06-05 07:23:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:50,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:50,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:50,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 07:23:50,898 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:50,899 INFO L82 PathProgramCache]: Analyzing trace with hash -721832266, now seen corresponding path program 303 times [2021-06-05 07:23:50,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:50,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963476503] [2021-06-05 07:23:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:51,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:51,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963476503] [2021-06-05 07:23:51,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963476503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:51,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:51,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:51,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161095476] [2021-06-05 07:23:51,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:51,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:51,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:51,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:51,071 INFO L87 Difference]: Start difference. First operand 4466 states and 15073 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:52,541 INFO L93 Difference]: Finished difference Result 5459 states and 18402 transitions. [2021-06-05 07:23:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:23:52,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:52,550 INFO L225 Difference]: With dead ends: 5459 [2021-06-05 07:23:52,550 INFO L226 Difference]: Without dead ends: 5383 [2021-06-05 07:23:52,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 965.1ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:23:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-06-05 07:23:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4474. [2021-06-05 07:23:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 3.3733512184216408) internal successors, (15089), 4473 states have internal predecessors, (15089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 15089 transitions. [2021-06-05 07:23:52,618 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 15089 transitions. Word has length 39 [2021-06-05 07:23:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:52,618 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 15089 transitions. [2021-06-05 07:23:52,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 15089 transitions. [2021-06-05 07:23:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:52,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:52,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:52,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 07:23:52,625 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1739885878, now seen corresponding path program 304 times [2021-06-05 07:23:52,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:52,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522282357] [2021-06-05 07:23:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:52,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:52,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522282357] [2021-06-05 07:23:52,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522282357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:52,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:52,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:23:52,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259409941] [2021-06-05 07:23:52,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:23:52,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:52,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:23:52,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:23:52,812 INFO L87 Difference]: Start difference. First operand 4474 states and 15089 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:54,400 INFO L93 Difference]: Finished difference Result 5489 states and 18453 transitions. [2021-06-05 07:23:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:23:54,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:54,410 INFO L225 Difference]: With dead ends: 5489 [2021-06-05 07:23:54,410 INFO L226 Difference]: Without dead ends: 5411 [2021-06-05 07:23:54,411 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1033.2ms TimeCoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:23:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2021-06-05 07:23:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 4454. [2021-06-05 07:23:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3768246126207053) internal successors, (15037), 4453 states have internal predecessors, (15037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15037 transitions. [2021-06-05 07:23:54,483 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15037 transitions. Word has length 39 [2021-06-05 07:23:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:54,483 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15037 transitions. [2021-06-05 07:23:54,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15037 transitions. [2021-06-05 07:23:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:54,489 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:54,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:54,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 07:23:54,490 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1527944876, now seen corresponding path program 305 times [2021-06-05 07:23:54,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:54,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547180694] [2021-06-05 07:23:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:54,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:54,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547180694] [2021-06-05 07:23:54,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547180694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:54,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:54,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:54,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375699234] [2021-06-05 07:23:54,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:54,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:54,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:54,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:54,657 INFO L87 Difference]: Start difference. First operand 4454 states and 15037 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:56,285 INFO L93 Difference]: Finished difference Result 5408 states and 18294 transitions. [2021-06-05 07:23:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:23:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:56,294 INFO L225 Difference]: With dead ends: 5408 [2021-06-05 07:23:56,294 INFO L226 Difference]: Without dead ends: 5341 [2021-06-05 07:23:56,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1006.2ms TimeCoverageRelationStatistics Valid=324, Invalid=3098, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:23:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-06-05 07:23:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 4502. [2021-06-05 07:23:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 3.3732503888024885) internal successors, (15183), 4501 states have internal predecessors, (15183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 15183 transitions. [2021-06-05 07:23:56,386 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 15183 transitions. Word has length 39 [2021-06-05 07:23:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:56,386 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 15183 transitions. [2021-06-05 07:23:56,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 15183 transitions. [2021-06-05 07:23:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:56,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:56,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:56,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 07:23:56,392 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:56,392 INFO L82 PathProgramCache]: Analyzing trace with hash -191671094, now seen corresponding path program 306 times [2021-06-05 07:23:56,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:56,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681971725] [2021-06-05 07:23:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:56,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:56,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681971725] [2021-06-05 07:23:56,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681971725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:56,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:56,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:56,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871962940] [2021-06-05 07:23:56,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:56,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:56,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:56,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:56,560 INFO L87 Difference]: Start difference. First operand 4502 states and 15183 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:23:58,768 INFO L93 Difference]: Finished difference Result 5504 states and 18555 transitions. [2021-06-05 07:23:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 07:23:58,768 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:23:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:23:58,777 INFO L225 Difference]: With dead ends: 5504 [2021-06-05 07:23:58,777 INFO L226 Difference]: Without dead ends: 5461 [2021-06-05 07:23:58,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 1464.9ms TimeCoverageRelationStatistics Valid=459, Invalid=4797, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 07:23:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-06-05 07:23:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 4508. [2021-06-05 07:23:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 3.3716441091635234) internal successors, (15196), 4507 states have internal predecessors, (15196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 15196 transitions. [2021-06-05 07:23:58,842 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 15196 transitions. Word has length 39 [2021-06-05 07:23:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:23:58,842 INFO L482 AbstractCegarLoop]: Abstraction has 4508 states and 15196 transitions. [2021-06-05 07:23:58,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:23:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 15196 transitions. [2021-06-05 07:23:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:23:58,848 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:23:58,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:23:58,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 07:23:58,848 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:23:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:23:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1972269396, now seen corresponding path program 307 times [2021-06-05 07:23:58,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:23:58,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724741998] [2021-06-05 07:23:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:23:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:23:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:23:59,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:23:59,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724741998] [2021-06-05 07:23:59,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724741998] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:23:59,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:23:59,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:23:59,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28196844] [2021-06-05 07:23:59,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:23:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:23:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:23:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:23:59,017 INFO L87 Difference]: Start difference. First operand 4508 states and 15196 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:01,202 INFO L93 Difference]: Finished difference Result 5435 states and 18375 transitions. [2021-06-05 07:24:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 07:24:01,203 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:01,211 INFO L225 Difference]: With dead ends: 5435 [2021-06-05 07:24:01,211 INFO L226 Difference]: Without dead ends: 5371 [2021-06-05 07:24:01,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1449.0ms TimeCoverageRelationStatistics Valid=452, Invalid=4660, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 07:24:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-06-05 07:24:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4490. [2021-06-05 07:24:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.373802628647806) internal successors, (15145), 4489 states have internal predecessors, (15145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15145 transitions. [2021-06-05 07:24:01,278 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15145 transitions. Word has length 39 [2021-06-05 07:24:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:01,278 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15145 transitions. [2021-06-05 07:24:01,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15145 transitions. [2021-06-05 07:24:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:01,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:01,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:01,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 07:24:01,284 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:01,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1913882284, now seen corresponding path program 308 times [2021-06-05 07:24:01,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:01,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924317543] [2021-06-05 07:24:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:01,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:01,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924317543] [2021-06-05 07:24:01,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924317543] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:01,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:01,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:24:01,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77291795] [2021-06-05 07:24:01,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:24:01,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:01,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:24:01,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:24:01,453 INFO L87 Difference]: Start difference. First operand 4490 states and 15145 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:03,491 INFO L93 Difference]: Finished difference Result 5456 states and 18422 transitions. [2021-06-05 07:24:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 07:24:03,491 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:03,500 INFO L225 Difference]: With dead ends: 5456 [2021-06-05 07:24:03,500 INFO L226 Difference]: Without dead ends: 5326 [2021-06-05 07:24:03,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1310.2ms TimeCoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:24:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-06-05 07:24:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 4466. [2021-06-05 07:24:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.3749160134378497) internal successors, (15069), 4465 states have internal predecessors, (15069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15069 transitions. [2021-06-05 07:24:03,564 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15069 transitions. Word has length 39 [2021-06-05 07:24:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:03,564 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15069 transitions. [2021-06-05 07:24:03,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15069 transitions. [2021-06-05 07:24:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:03,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:03,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:03,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 07:24:03,570 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1252737994, now seen corresponding path program 309 times [2021-06-05 07:24:03,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:03,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413911940] [2021-06-05 07:24:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:03,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:03,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413911940] [2021-06-05 07:24:03,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413911940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:03,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:03,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:03,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671317223] [2021-06-05 07:24:03,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:03,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:03,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:03,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:03,755 INFO L87 Difference]: Start difference. First operand 4466 states and 15069 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:05,633 INFO L93 Difference]: Finished difference Result 5501 states and 18545 transitions. [2021-06-05 07:24:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:24:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:05,642 INFO L225 Difference]: With dead ends: 5501 [2021-06-05 07:24:05,643 INFO L226 Difference]: Without dead ends: 5434 [2021-06-05 07:24:05,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1189.0ms TimeCoverageRelationStatistics Valid=375, Invalid=3915, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:24:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2021-06-05 07:24:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 4484. [2021-06-05 07:24:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.3720722730314523) internal successors, (15117), 4483 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15117 transitions. [2021-06-05 07:24:05,712 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15117 transitions. Word has length 39 [2021-06-05 07:24:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:05,712 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15117 transitions. [2021-06-05 07:24:05,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15117 transitions. [2021-06-05 07:24:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:05,717 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:05,717 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:05,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 07:24:05,718 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash -466877976, now seen corresponding path program 310 times [2021-06-05 07:24:05,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:05,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78250427] [2021-06-05 07:24:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:05,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:05,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78250427] [2021-06-05 07:24:05,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78250427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:05,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:05,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:05,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271127642] [2021-06-05 07:24:05,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:05,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:05,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:05,899 INFO L87 Difference]: Start difference. First operand 4484 states and 15117 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:08,344 INFO L93 Difference]: Finished difference Result 5630 states and 18872 transitions. [2021-06-05 07:24:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 07:24:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:08,353 INFO L225 Difference]: With dead ends: 5630 [2021-06-05 07:24:08,353 INFO L226 Difference]: Without dead ends: 5587 [2021-06-05 07:24:08,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1640.1ms TimeCoverageRelationStatistics Valid=517, Invalid=5803, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 07:24:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2021-06-05 07:24:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 4490. [2021-06-05 07:24:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.370461127199822) internal successors, (15130), 4489 states have internal predecessors, (15130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15130 transitions. [2021-06-05 07:24:08,422 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15130 transitions. Word has length 39 [2021-06-05 07:24:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:08,422 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15130 transitions. [2021-06-05 07:24:08,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15130 transitions. [2021-06-05 07:24:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:08,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:08,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:08,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 07:24:08,429 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2047491018, now seen corresponding path program 311 times [2021-06-05 07:24:08,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:08,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777911501] [2021-06-05 07:24:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:08,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:08,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777911501] [2021-06-05 07:24:08,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777911501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:08,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:08,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:08,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057170731] [2021-06-05 07:24:08,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:08,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:08,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:08,613 INFO L87 Difference]: Start difference. First operand 4490 states and 15130 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:10,960 INFO L93 Difference]: Finished difference Result 5561 states and 18692 transitions. [2021-06-05 07:24:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 07:24:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:10,969 INFO L225 Difference]: With dead ends: 5561 [2021-06-05 07:24:10,969 INFO L226 Difference]: Without dead ends: 5497 [2021-06-05 07:24:10,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 1546.7ms TimeCoverageRelationStatistics Valid=491, Invalid=5361, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 07:24:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2021-06-05 07:24:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 4472. [2021-06-05 07:24:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.373965555804071) internal successors, (15085), 4471 states have internal predecessors, (15085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15085 transitions. [2021-06-05 07:24:11,033 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15085 transitions. Word has length 39 [2021-06-05 07:24:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:11,033 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15085 transitions. [2021-06-05 07:24:11,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15085 transitions. [2021-06-05 07:24:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:11,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:11,038 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:11,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 07:24:11,038 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:11,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:11,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1735685238, now seen corresponding path program 312 times [2021-06-05 07:24:11,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:11,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004793136] [2021-06-05 07:24:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:11,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:11,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004793136] [2021-06-05 07:24:11,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004793136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:11,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:11,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:11,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707852757] [2021-06-05 07:24:11,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:11,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:11,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:11,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:11,221 INFO L87 Difference]: Start difference. First operand 4472 states and 15085 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:12,732 INFO L93 Difference]: Finished difference Result 5403 states and 18233 transitions. [2021-06-05 07:24:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:24:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:12,741 INFO L225 Difference]: With dead ends: 5403 [2021-06-05 07:24:12,741 INFO L226 Difference]: Without dead ends: 5336 [2021-06-05 07:24:12,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 927.1ms TimeCoverageRelationStatistics Valid=296, Invalid=3010, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:24:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2021-06-05 07:24:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 4490. [2021-06-05 07:24:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.369792826910225) internal successors, (15127), 4489 states have internal predecessors, (15127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15127 transitions. [2021-06-05 07:24:12,808 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15127 transitions. Word has length 39 [2021-06-05 07:24:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:12,808 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15127 transitions. [2021-06-05 07:24:12,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15127 transitions. [2021-06-05 07:24:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:12,814 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:12,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:12,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 07:24:12,814 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:12,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1377615030, now seen corresponding path program 313 times [2021-06-05 07:24:12,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:12,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24954923] [2021-06-05 07:24:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:12,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:12,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24954923] [2021-06-05 07:24:12,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24954923] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:12,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:12,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:12,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12124175] [2021-06-05 07:24:12,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:12,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:12,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:12,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:12,996 INFO L87 Difference]: Start difference. First operand 4490 states and 15127 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:14,518 INFO L93 Difference]: Finished difference Result 5420 states and 18237 transitions. [2021-06-05 07:24:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:24:14,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:14,528 INFO L225 Difference]: With dead ends: 5420 [2021-06-05 07:24:14,528 INFO L226 Difference]: Without dead ends: 5345 [2021-06-05 07:24:14,528 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 939.9ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:24:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-06-05 07:24:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4478. [2021-06-05 07:24:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.3716774625865535) internal successors, (15095), 4477 states have internal predecessors, (15095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15095 transitions. [2021-06-05 07:24:14,603 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15095 transitions. Word has length 39 [2021-06-05 07:24:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:14,603 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15095 transitions. [2021-06-05 07:24:14,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15095 transitions. [2021-06-05 07:24:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:14,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:14,609 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:14,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 07:24:14,609 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:14,609 INFO L82 PathProgramCache]: Analyzing trace with hash 250690024, now seen corresponding path program 314 times [2021-06-05 07:24:14,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:14,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062161272] [2021-06-05 07:24:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:14,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:14,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062161272] [2021-06-05 07:24:14,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062161272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:14,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:14,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:14,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934434437] [2021-06-05 07:24:14,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:14,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:14,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:14,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:14,791 INFO L87 Difference]: Start difference. First operand 4478 states and 15095 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:16,871 INFO L93 Difference]: Finished difference Result 5579 states and 18644 transitions. [2021-06-05 07:24:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 07:24:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:16,881 INFO L225 Difference]: With dead ends: 5579 [2021-06-05 07:24:16,881 INFO L226 Difference]: Without dead ends: 5536 [2021-06-05 07:24:16,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1408.4ms TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 07:24:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-06-05 07:24:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 4487. [2021-06-05 07:24:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.370263040570664) internal successors, (15119), 4486 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15119 transitions. [2021-06-05 07:24:16,945 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15119 transitions. Word has length 39 [2021-06-05 07:24:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:16,945 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15119 transitions. [2021-06-05 07:24:16,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15119 transitions. [2021-06-05 07:24:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:16,950 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:16,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:16,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 07:24:16,950 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1529908278, now seen corresponding path program 315 times [2021-06-05 07:24:16,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:16,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491020357] [2021-06-05 07:24:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:17,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:17,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491020357] [2021-06-05 07:24:17,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491020357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:17,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:17,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:17,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667342483] [2021-06-05 07:24:17,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:17,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:17,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:17,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:17,131 INFO L87 Difference]: Start difference. First operand 4487 states and 15119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:19,195 INFO L93 Difference]: Finished difference Result 5567 states and 18606 transitions. [2021-06-05 07:24:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 07:24:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:19,204 INFO L225 Difference]: With dead ends: 5567 [2021-06-05 07:24:19,205 INFO L226 Difference]: Without dead ends: 5515 [2021-06-05 07:24:19,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1364.9ms TimeCoverageRelationStatistics Valid=432, Invalid=4680, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 07:24:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2021-06-05 07:24:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 4481. [2021-06-05 07:24:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 3.3712053571428573) internal successors, (15103), 4480 states have internal predecessors, (15103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 15103 transitions. [2021-06-05 07:24:19,271 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 15103 transitions. Word has length 39 [2021-06-05 07:24:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:19,271 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 15103 transitions. [2021-06-05 07:24:19,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 15103 transitions. [2021-06-05 07:24:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:19,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:19,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:19,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 07:24:19,277 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:19,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1286729206, now seen corresponding path program 316 times [2021-06-05 07:24:19,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:19,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463078972] [2021-06-05 07:24:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:19,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:19,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463078972] [2021-06-05 07:24:19,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463078972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:19,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:19,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:19,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779986776] [2021-06-05 07:24:19,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:19,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:19,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:19,459 INFO L87 Difference]: Start difference. First operand 4481 states and 15103 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:21,048 INFO L93 Difference]: Finished difference Result 5564 states and 18560 transitions. [2021-06-05 07:24:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:24:21,048 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:21,057 INFO L225 Difference]: With dead ends: 5564 [2021-06-05 07:24:21,057 INFO L226 Difference]: Without dead ends: 5501 [2021-06-05 07:24:21,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1002.6ms TimeCoverageRelationStatistics Valid=329, Invalid=3453, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:24:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2021-06-05 07:24:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4481. [2021-06-05 07:24:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 3.3705357142857144) internal successors, (15100), 4480 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 15100 transitions. [2021-06-05 07:24:21,124 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 15100 transitions. Word has length 39 [2021-06-05 07:24:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:21,124 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 15100 transitions. [2021-06-05 07:24:21,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 15100 transitions. [2021-06-05 07:24:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:21,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:21,130 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:21,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 07:24:21,130 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:21,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1080596332, now seen corresponding path program 317 times [2021-06-05 07:24:21,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:21,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985011086] [2021-06-05 07:24:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:21,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:21,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985011086] [2021-06-05 07:24:21,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985011086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:21,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:21,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:21,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804650990] [2021-06-05 07:24:21,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:21,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:21,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:21,313 INFO L87 Difference]: Start difference. First operand 4481 states and 15100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:22,880 INFO L93 Difference]: Finished difference Result 5469 states and 18344 transitions. [2021-06-05 07:24:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:24:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:22,889 INFO L225 Difference]: With dead ends: 5469 [2021-06-05 07:24:22,890 INFO L226 Difference]: Without dead ends: 5393 [2021-06-05 07:24:22,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 982.6ms TimeCoverageRelationStatistics Valid=312, Invalid=3228, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:24:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-06-05 07:24:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 4472. [2021-06-05 07:24:22,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.3726235741444865) internal successors, (15079), 4471 states have internal predecessors, (15079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15079 transitions. [2021-06-05 07:24:22,956 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15079 transitions. Word has length 39 [2021-06-05 07:24:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:22,956 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15079 transitions. [2021-06-05 07:24:22,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15079 transitions. [2021-06-05 07:24:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:22,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:22,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:22,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 07:24:22,962 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1498841964, now seen corresponding path program 318 times [2021-06-05 07:24:22,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:22,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017003032] [2021-06-05 07:24:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:23,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:23,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017003032] [2021-06-05 07:24:23,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017003032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:23,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:23,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:23,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812709009] [2021-06-05 07:24:23,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:23,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:23,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:23,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:23,147 INFO L87 Difference]: Start difference. First operand 4472 states and 15079 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:25,456 INFO L93 Difference]: Finished difference Result 5646 states and 18882 transitions. [2021-06-05 07:24:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 07:24:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:25,465 INFO L225 Difference]: With dead ends: 5646 [2021-06-05 07:24:25,465 INFO L226 Difference]: Without dead ends: 5509 [2021-06-05 07:24:25,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 1501.4ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 07:24:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2021-06-05 07:24:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 4478. [2021-06-05 07:24:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.3716774625865535) internal successors, (15095), 4477 states have internal predecessors, (15095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15095 transitions. [2021-06-05 07:24:25,528 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15095 transitions. Word has length 39 [2021-06-05 07:24:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:25,528 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15095 transitions. [2021-06-05 07:24:25,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15095 transitions. [2021-06-05 07:24:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:25,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:25,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:25,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 07:24:25,534 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash 757889866, now seen corresponding path program 319 times [2021-06-05 07:24:25,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:25,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604337382] [2021-06-05 07:24:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:25,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:25,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604337382] [2021-06-05 07:24:25,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604337382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:25,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:25,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615319086] [2021-06-05 07:24:25,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:25,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:25,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:25,718 INFO L87 Difference]: Start difference. First operand 4478 states and 15095 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:27,770 INFO L93 Difference]: Finished difference Result 5618 states and 18745 transitions. [2021-06-05 07:24:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 07:24:27,770 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:27,778 INFO L225 Difference]: With dead ends: 5618 [2021-06-05 07:24:27,778 INFO L226 Difference]: Without dead ends: 5554 [2021-06-05 07:24:27,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1354.5ms TimeCoverageRelationStatistics Valid=429, Invalid=4683, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 07:24:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2021-06-05 07:24:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 4487. [2021-06-05 07:24:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.370263040570664) internal successors, (15119), 4486 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15119 transitions. [2021-06-05 07:24:27,836 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15119 transitions. Word has length 39 [2021-06-05 07:24:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:27,836 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15119 transitions. [2021-06-05 07:24:27,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15119 transitions. [2021-06-05 07:24:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:27,841 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:27,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:27,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 07:24:27,841 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash -779529364, now seen corresponding path program 320 times [2021-06-05 07:24:27,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:27,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663758602] [2021-06-05 07:24:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:28,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:28,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663758602] [2021-06-05 07:24:28,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663758602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:28,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:28,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:28,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239648863] [2021-06-05 07:24:28,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:28,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:28,026 INFO L87 Difference]: Start difference. First operand 4487 states and 15119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:29,569 INFO L93 Difference]: Finished difference Result 5558 states and 18563 transitions. [2021-06-05 07:24:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:24:29,569 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:29,578 INFO L225 Difference]: With dead ends: 5558 [2021-06-05 07:24:29,578 INFO L226 Difference]: Without dead ends: 5495 [2021-06-05 07:24:29,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 954.1ms TimeCoverageRelationStatistics Valid=307, Invalid=3233, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:24:29,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2021-06-05 07:24:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 4487. [2021-06-05 07:24:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.369594293357111) internal successors, (15116), 4486 states have internal predecessors, (15116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15116 transitions. [2021-06-05 07:24:29,647 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15116 transitions. Word has length 39 [2021-06-05 07:24:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:29,647 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15116 transitions. [2021-06-05 07:24:29,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15116 transitions. [2021-06-05 07:24:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:29,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:29,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:29,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 07:24:29,653 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:29,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1587796174, now seen corresponding path program 321 times [2021-06-05 07:24:29,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:29,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837254519] [2021-06-05 07:24:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:29,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:29,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837254519] [2021-06-05 07:24:29,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837254519] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:29,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:29,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:29,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748546718] [2021-06-05 07:24:29,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:29,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:29,875 INFO L87 Difference]: Start difference. First operand 4487 states and 15116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:31,506 INFO L93 Difference]: Finished difference Result 5577 states and 18609 transitions. [2021-06-05 07:24:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:24:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:31,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:31,515 INFO L225 Difference]: With dead ends: 5577 [2021-06-05 07:24:31,516 INFO L226 Difference]: Without dead ends: 5507 [2021-06-05 07:24:31,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1042.2ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:24:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2021-06-05 07:24:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 4484. [2021-06-05 07:24:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.370064688824448) internal successors, (15108), 4483 states have internal predecessors, (15108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15108 transitions. [2021-06-05 07:24:31,583 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15108 transitions. Word has length 39 [2021-06-05 07:24:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:31,583 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15108 transitions. [2021-06-05 07:24:31,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15108 transitions. [2021-06-05 07:24:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:31,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:31,588 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:31,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 07:24:31,588 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash -427888026, now seen corresponding path program 322 times [2021-06-05 07:24:31,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:31,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120311176] [2021-06-05 07:24:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:31,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:31,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120311176] [2021-06-05 07:24:31,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120311176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:31,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:31,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:24:31,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063854459] [2021-06-05 07:24:31,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:24:31,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:31,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:24:31,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:24:31,759 INFO L87 Difference]: Start difference. First operand 4484 states and 15108 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:33,186 INFO L93 Difference]: Finished difference Result 5415 states and 18234 transitions. [2021-06-05 07:24:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:24:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:33,195 INFO L225 Difference]: With dead ends: 5415 [2021-06-05 07:24:33,195 INFO L226 Difference]: Without dead ends: 5339 [2021-06-05 07:24:33,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 883.8ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:24:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2021-06-05 07:24:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 4498. [2021-06-05 07:24:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4497 states have (on average 3.3662441627751836) internal successors, (15138), 4497 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:33,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 15138 transitions. [2021-06-05 07:24:33,261 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 15138 transitions. Word has length 39 [2021-06-05 07:24:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:33,262 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 15138 transitions. [2021-06-05 07:24:33,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 15138 transitions. [2021-06-05 07:24:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:33,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:33,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:33,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 07:24:33,267 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:33,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:33,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1975810360, now seen corresponding path program 323 times [2021-06-05 07:24:33,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:33,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145099498] [2021-06-05 07:24:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:33,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:33,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145099498] [2021-06-05 07:24:33,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145099498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:33,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:33,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:33,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188114627] [2021-06-05 07:24:33,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:33,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:33,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:33,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:33,484 INFO L87 Difference]: Start difference. First operand 4498 states and 15138 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:35,000 INFO L93 Difference]: Finished difference Result 5454 states and 18306 transitions. [2021-06-05 07:24:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:24:35,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:35,009 INFO L225 Difference]: With dead ends: 5454 [2021-06-05 07:24:35,009 INFO L226 Difference]: Without dead ends: 5355 [2021-06-05 07:24:35,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 969.5ms TimeCoverageRelationStatistics Valid=301, Invalid=3121, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:24:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2021-06-05 07:24:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 4466. [2021-06-05 07:24:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.374020156774916) internal successors, (15065), 4465 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15065 transitions. [2021-06-05 07:24:35,080 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15065 transitions. Word has length 39 [2021-06-05 07:24:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:35,081 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15065 transitions. [2021-06-05 07:24:35,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15065 transitions. [2021-06-05 07:24:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:35,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:35,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:35,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 07:24:35,086 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:35,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2082179320, now seen corresponding path program 324 times [2021-06-05 07:24:35,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:35,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827749464] [2021-06-05 07:24:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:35,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:35,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827749464] [2021-06-05 07:24:35,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827749464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:35,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:35,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:35,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242702315] [2021-06-05 07:24:35,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:35,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:35,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:35,270 INFO L87 Difference]: Start difference. First operand 4466 states and 15065 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:37,132 INFO L93 Difference]: Finished difference Result 5725 states and 19211 transitions. [2021-06-05 07:24:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:24:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:37,141 INFO L225 Difference]: With dead ends: 5725 [2021-06-05 07:24:37,141 INFO L226 Difference]: Without dead ends: 5658 [2021-06-05 07:24:37,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1202.3ms TimeCoverageRelationStatistics Valid=426, Invalid=4130, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:24:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-06-05 07:24:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4476. [2021-06-05 07:24:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.373631284916201) internal successors, (15097), 4475 states have internal predecessors, (15097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15097 transitions. [2021-06-05 07:24:37,212 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15097 transitions. Word has length 39 [2021-06-05 07:24:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:37,212 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15097 transitions. [2021-06-05 07:24:37,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15097 transitions. [2021-06-05 07:24:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:37,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:37,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:37,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 07:24:37,218 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:37,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:37,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1951584472, now seen corresponding path program 325 times [2021-06-05 07:24:37,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:37,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485589280] [2021-06-05 07:24:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:37,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:37,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485589280] [2021-06-05 07:24:37,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485589280] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:37,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:37,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:37,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573949239] [2021-06-05 07:24:37,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:37,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:37,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:37,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:37,402 INFO L87 Difference]: Start difference. First operand 4476 states and 15097 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:39,184 INFO L93 Difference]: Finished difference Result 5628 states and 18951 transitions. [2021-06-05 07:24:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:24:39,184 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:39,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:39,193 INFO L225 Difference]: With dead ends: 5628 [2021-06-05 07:24:39,193 INFO L226 Difference]: Without dead ends: 5565 [2021-06-05 07:24:39,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1197.6ms TimeCoverageRelationStatistics Valid=419, Invalid=4003, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:24:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-06-05 07:24:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4476. [2021-06-05 07:24:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.372737430167598) internal successors, (15093), 4475 states have internal predecessors, (15093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15093 transitions. [2021-06-05 07:24:39,261 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15093 transitions. Word has length 39 [2021-06-05 07:24:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:39,262 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15093 transitions. [2021-06-05 07:24:39,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15093 transitions. [2021-06-05 07:24:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:39,268 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:39,268 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:39,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 07:24:39,268 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1815905880, now seen corresponding path program 326 times [2021-06-05 07:24:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:39,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708679381] [2021-06-05 07:24:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:39,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:39,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708679381] [2021-06-05 07:24:39,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708679381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:39,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:39,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:39,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076357821] [2021-06-05 07:24:39,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:39,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:39,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:39,453 INFO L87 Difference]: Start difference. First operand 4476 states and 15093 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:41,993 INFO L93 Difference]: Finished difference Result 5894 states and 19581 transitions. [2021-06-05 07:24:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 07:24:41,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:42,001 INFO L225 Difference]: With dead ends: 5894 [2021-06-05 07:24:42,001 INFO L226 Difference]: Without dead ends: 5812 [2021-06-05 07:24:42,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 1755.9ms TimeCoverageRelationStatistics Valid=628, Invalid=6854, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 07:24:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2021-06-05 07:24:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4491. [2021-06-05 07:24:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 3.3701559020044543) internal successors, (15132), 4490 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 15132 transitions. [2021-06-05 07:24:42,066 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 15132 transitions. Word has length 39 [2021-06-05 07:24:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:42,066 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 15132 transitions. [2021-06-05 07:24:42,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 15132 transitions. [2021-06-05 07:24:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:42,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:42,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:42,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 07:24:42,072 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:42,072 INFO L82 PathProgramCache]: Analyzing trace with hash 35307578, now seen corresponding path program 327 times [2021-06-05 07:24:42,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:42,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927831422] [2021-06-05 07:24:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:42,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:42,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927831422] [2021-06-05 07:24:42,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927831422] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:42,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:42,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:42,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116005855] [2021-06-05 07:24:42,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:42,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:42,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:42,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:42,255 INFO L87 Difference]: Start difference. First operand 4491 states and 15132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:44,681 INFO L93 Difference]: Finished difference Result 5796 states and 19352 transitions. [2021-06-05 07:24:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 07:24:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:44,690 INFO L225 Difference]: With dead ends: 5796 [2021-06-05 07:24:44,691 INFO L226 Difference]: Without dead ends: 5744 [2021-06-05 07:24:44,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 1697.0ms TimeCoverageRelationStatistics Valid=596, Invalid=6376, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 07:24:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-06-05 07:24:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4483. [2021-06-05 07:24:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 4482 states have (on average 3.3717090584560463) internal successors, (15112), 4482 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 15112 transitions. [2021-06-05 07:24:44,759 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 15112 transitions. Word has length 39 [2021-06-05 07:24:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:44,759 INFO L482 AbstractCegarLoop]: Abstraction has 4483 states and 15112 transitions. [2021-06-05 07:24:44,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 15112 transitions. [2021-06-05 07:24:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:44,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:44,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:44,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 07:24:44,765 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1560577846, now seen corresponding path program 328 times [2021-06-05 07:24:44,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:44,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99418380] [2021-06-05 07:24:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:44,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:44,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99418380] [2021-06-05 07:24:44,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99418380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:44,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:44,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:44,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164112362] [2021-06-05 07:24:44,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:44,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:44,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:44,947 INFO L87 Difference]: Start difference. First operand 4483 states and 15112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:46,788 INFO L93 Difference]: Finished difference Result 5765 states and 19249 transitions. [2021-06-05 07:24:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 07:24:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:46,798 INFO L225 Difference]: With dead ends: 5765 [2021-06-05 07:24:46,798 INFO L226 Difference]: Without dead ends: 5710 [2021-06-05 07:24:46,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1243.8ms TimeCoverageRelationStatistics Valid=455, Invalid=4375, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 07:24:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2021-06-05 07:24:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 4485. [2021-06-05 07:24:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 3.3708742194469226) internal successors, (15115), 4484 states have internal predecessors, (15115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 15115 transitions. [2021-06-05 07:24:46,890 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 15115 transitions. Word has length 39 [2021-06-05 07:24:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:46,890 INFO L482 AbstractCegarLoop]: Abstraction has 4485 states and 15115 transitions. [2021-06-05 07:24:46,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 15115 transitions. [2021-06-05 07:24:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:46,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:46,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:46,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 07:24:46,896 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:46,896 INFO L82 PathProgramCache]: Analyzing trace with hash -387925624, now seen corresponding path program 329 times [2021-06-05 07:24:46,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:46,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353673494] [2021-06-05 07:24:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:47,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:47,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353673494] [2021-06-05 07:24:47,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353673494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:47,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:47,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:47,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284673923] [2021-06-05 07:24:47,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:47,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:47,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:47,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:47,078 INFO L87 Difference]: Start difference. First operand 4485 states and 15115 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:48,835 INFO L93 Difference]: Finished difference Result 5700 states and 19097 transitions. [2021-06-05 07:24:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:24:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:48,845 INFO L225 Difference]: With dead ends: 5700 [2021-06-05 07:24:48,845 INFO L226 Difference]: Without dead ends: 5654 [2021-06-05 07:24:48,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1173.6ms TimeCoverageRelationStatistics Valid=425, Invalid=3997, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:24:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-06-05 07:24:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 4489. [2021-06-05 07:24:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4488 states have (on average 3.3696524064171123) internal successors, (15123), 4488 states have internal predecessors, (15123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 15123 transitions. [2021-06-05 07:24:48,922 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 15123 transitions. Word has length 39 [2021-06-05 07:24:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:48,922 INFO L482 AbstractCegarLoop]: Abstraction has 4489 states and 15123 transitions. [2021-06-05 07:24:48,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 15123 transitions. [2021-06-05 07:24:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:48,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:48,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:48,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 07:24:48,929 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash -635391786, now seen corresponding path program 330 times [2021-06-05 07:24:48,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:48,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538559200] [2021-06-05 07:24:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:49,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:49,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538559200] [2021-06-05 07:24:49,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538559200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:49,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:49,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:49,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893842403] [2021-06-05 07:24:49,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:49,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:49,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:49,115 INFO L87 Difference]: Start difference. First operand 4489 states and 15123 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:50,974 INFO L93 Difference]: Finished difference Result 5672 states and 19046 transitions. [2021-06-05 07:24:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 07:24:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:50,983 INFO L225 Difference]: With dead ends: 5672 [2021-06-05 07:24:50,983 INFO L226 Difference]: Without dead ends: 5623 [2021-06-05 07:24:50,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1244.1ms TimeCoverageRelationStatistics Valid=437, Invalid=4119, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:24:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-06-05 07:24:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 4479. [2021-06-05 07:24:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 4478 states have (on average 3.37293434569004) internal successors, (15104), 4478 states have internal predecessors, (15104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 15104 transitions. [2021-06-05 07:24:51,051 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 15104 transitions. Word has length 39 [2021-06-05 07:24:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:51,052 INFO L482 AbstractCegarLoop]: Abstraction has 4479 states and 15104 transitions. [2021-06-05 07:24:51,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 15104 transitions. [2021-06-05 07:24:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:51,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:51,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:51,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 07:24:51,057 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash 823147510, now seen corresponding path program 331 times [2021-06-05 07:24:51,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:51,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136550797] [2021-06-05 07:24:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:51,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:51,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136550797] [2021-06-05 07:24:51,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136550797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:51,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:51,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:51,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464894341] [2021-06-05 07:24:51,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:51,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:51,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:51,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:51,261 INFO L87 Difference]: Start difference. First operand 4479 states and 15104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:53,146 INFO L93 Difference]: Finished difference Result 5771 states and 19335 transitions. [2021-06-05 07:24:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:24:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:53,155 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 07:24:53,155 INFO L226 Difference]: Without dead ends: 5704 [2021-06-05 07:24:53,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 1211.5ms TimeCoverageRelationStatistics Valid=410, Invalid=4146, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:24:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2021-06-05 07:24:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 4497. [2021-06-05 07:24:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 3.3687722419928825) internal successors, (15146), 4496 states have internal predecessors, (15146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 15146 transitions. [2021-06-05 07:24:53,221 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 15146 transitions. Word has length 39 [2021-06-05 07:24:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:53,221 INFO L482 AbstractCegarLoop]: Abstraction has 4497 states and 15146 transitions. [2021-06-05 07:24:53,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 15146 transitions. [2021-06-05 07:24:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:53,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:53,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:53,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 07:24:53,226 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:53,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1181217718, now seen corresponding path program 332 times [2021-06-05 07:24:53,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:53,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006771077] [2021-06-05 07:24:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:53,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:53,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006771077] [2021-06-05 07:24:53,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006771077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:53,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:53,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:53,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202479592] [2021-06-05 07:24:53,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:53,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:53,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:53,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:53,409 INFO L87 Difference]: Start difference. First operand 4497 states and 15146 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:55,169 INFO L93 Difference]: Finished difference Result 5733 states and 19210 transitions. [2021-06-05 07:24:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:24:55,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:55,180 INFO L225 Difference]: With dead ends: 5733 [2021-06-05 07:24:55,180 INFO L226 Difference]: Without dead ends: 5658 [2021-06-05 07:24:55,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1134.5ms TimeCoverageRelationStatistics Valid=403, Invalid=4019, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:24:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-06-05 07:24:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4497. [2021-06-05 07:24:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 3.367437722419929) internal successors, (15140), 4496 states have internal predecessors, (15140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 15140 transitions. [2021-06-05 07:24:55,282 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 15140 transitions. Word has length 39 [2021-06-05 07:24:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:55,283 INFO L482 AbstractCegarLoop]: Abstraction has 4497 states and 15140 transitions. [2021-06-05 07:24:55,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 15140 transitions. [2021-06-05 07:24:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:55,289 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:55,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:55,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 07:24:55,289 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1485444524, now seen corresponding path program 333 times [2021-06-05 07:24:55,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:55,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454173363] [2021-06-05 07:24:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:55,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:55,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454173363] [2021-06-05 07:24:55,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454173363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:55,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:55,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:55,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476836610] [2021-06-05 07:24:55,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:55,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:55,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:55,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:55,474 INFO L87 Difference]: Start difference. First operand 4497 states and 15140 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:57,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:24:57,997 INFO L93 Difference]: Finished difference Result 5901 states and 19622 transitions. [2021-06-05 07:24:57,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 07:24:57,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:24:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:24:58,006 INFO L225 Difference]: With dead ends: 5901 [2021-06-05 07:24:58,006 INFO L226 Difference]: Without dead ends: 5809 [2021-06-05 07:24:58,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 1736.1ms TimeCoverageRelationStatistics Valid=605, Invalid=6877, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 07:24:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-06-05 07:24:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 4502. [2021-06-05 07:24:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 3.366807376138636) internal successors, (15154), 4501 states have internal predecessors, (15154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 15154 transitions. [2021-06-05 07:24:58,119 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 15154 transitions. Word has length 39 [2021-06-05 07:24:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:24:58,119 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 15154 transitions. [2021-06-05 07:24:58,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:24:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 15154 transitions. [2021-06-05 07:24:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:24:58,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:24:58,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:24:58,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 07:24:58,124 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:24:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:24:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1028924470, now seen corresponding path program 334 times [2021-06-05 07:24:58,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:24:58,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636555773] [2021-06-05 07:24:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:24:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:24:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:24:58,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:24:58,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636555773] [2021-06-05 07:24:58,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636555773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:24:58,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:24:58,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:24:58,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444966445] [2021-06-05 07:24:58,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:24:58,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:24:58,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:24:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:24:58,307 INFO L87 Difference]: Start difference. First operand 4502 states and 15154 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:00,709 INFO L93 Difference]: Finished difference Result 5840 states and 19473 transitions. [2021-06-05 07:25:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 07:25:00,709 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:00,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:00,719 INFO L225 Difference]: With dead ends: 5840 [2021-06-05 07:25:00,719 INFO L226 Difference]: Without dead ends: 5788 [2021-06-05 07:25:00,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 1631.8ms TimeCoverageRelationStatistics Valid=564, Invalid=6242, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 07:25:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-06-05 07:25:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 4496. [2021-06-05 07:25:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4495 states have (on average 3.367741935483871) internal successors, (15138), 4495 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 15138 transitions. [2021-06-05 07:25:00,788 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 15138 transitions. Word has length 39 [2021-06-05 07:25:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:00,788 INFO L482 AbstractCegarLoop]: Abstraction has 4496 states and 15138 transitions. [2021-06-05 07:25:00,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 15138 transitions. [2021-06-05 07:25:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:00,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:00,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:00,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 07:25:00,794 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:00,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1272103542, now seen corresponding path program 335 times [2021-06-05 07:25:00,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:00,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393845887] [2021-06-05 07:25:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:01,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:01,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393845887] [2021-06-05 07:25:01,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393845887] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:01,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:01,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:01,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294306542] [2021-06-05 07:25:01,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:01,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:01,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:01,005 INFO L87 Difference]: Start difference. First operand 4496 states and 15138 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:02,872 INFO L93 Difference]: Finished difference Result 5854 states and 19472 transitions. [2021-06-05 07:25:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 07:25:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:02,882 INFO L225 Difference]: With dead ends: 5854 [2021-06-05 07:25:02,882 INFO L226 Difference]: Without dead ends: 5791 [2021-06-05 07:25:02,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 1208.0ms TimeCoverageRelationStatistics Valid=431, Invalid=4399, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 07:25:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2021-06-05 07:25:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 4499. [2021-06-05 07:25:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 3.366607381058248) internal successors, (15143), 4498 states have internal predecessors, (15143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 15143 transitions. [2021-06-05 07:25:02,958 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 15143 transitions. Word has length 39 [2021-06-05 07:25:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:02,958 INFO L482 AbstractCegarLoop]: Abstraction has 4499 states and 15143 transitions. [2021-06-05 07:25:02,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 15143 transitions. [2021-06-05 07:25:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:02,964 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:02,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:02,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 07:25:02,964 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:02,964 INFO L82 PathProgramCache]: Analyzing trace with hash -655538216, now seen corresponding path program 336 times [2021-06-05 07:25:02,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:02,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040064477] [2021-06-05 07:25:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:03,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:03,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040064477] [2021-06-05 07:25:03,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040064477] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:03,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:03,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:03,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201203293] [2021-06-05 07:25:03,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:03,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:03,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:03,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:03,150 INFO L87 Difference]: Start difference. First operand 4499 states and 15143 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:04,939 INFO L93 Difference]: Finished difference Result 5745 states and 19219 transitions. [2021-06-05 07:25:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:25:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:04,949 INFO L225 Difference]: With dead ends: 5745 [2021-06-05 07:25:04,949 INFO L226 Difference]: Without dead ends: 5699 [2021-06-05 07:25:04,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1136.9ms TimeCoverageRelationStatistics Valid=401, Invalid=4021, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:25:04,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2021-06-05 07:25:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 4506. [2021-06-05 07:25:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 3.364705882352941) internal successors, (15158), 4505 states have internal predecessors, (15158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 15158 transitions. [2021-06-05 07:25:05,022 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 15158 transitions. Word has length 39 [2021-06-05 07:25:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:05,022 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 15158 transitions. [2021-06-05 07:25:05,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 15158 transitions. [2021-06-05 07:25:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:05,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:05,027 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:05,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 07:25:05,027 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2090605706, now seen corresponding path program 337 times [2021-06-05 07:25:05,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:05,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430337867] [2021-06-05 07:25:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:05,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:05,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430337867] [2021-06-05 07:25:05,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430337867] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:05,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:05,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:05,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764241430] [2021-06-05 07:25:05,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:05,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:05,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:05,209 INFO L87 Difference]: Start difference. First operand 4506 states and 15158 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:07,192 INFO L93 Difference]: Finished difference Result 5675 states and 19008 transitions. [2021-06-05 07:25:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 07:25:07,192 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:07,202 INFO L225 Difference]: With dead ends: 5675 [2021-06-05 07:25:07,202 INFO L226 Difference]: Without dead ends: 5614 [2021-06-05 07:25:07,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1202.4ms TimeCoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:25:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-06-05 07:25:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 4490. [2021-06-05 07:25:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.369570060147026) internal successors, (15126), 4489 states have internal predecessors, (15126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15126 transitions. [2021-06-05 07:25:07,278 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15126 transitions. Word has length 39 [2021-06-05 07:25:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:07,278 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15126 transitions. [2021-06-05 07:25:07,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15126 transitions. [2021-06-05 07:25:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:07,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:07,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:07,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 07:25:07,284 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash -82808552, now seen corresponding path program 338 times [2021-06-05 07:25:07,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:07,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874921325] [2021-06-05 07:25:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:07,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:07,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874921325] [2021-06-05 07:25:07,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874921325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:07,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:07,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:07,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898829994] [2021-06-05 07:25:07,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:07,471 INFO L87 Difference]: Start difference. First operand 4490 states and 15126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:09,271 INFO L93 Difference]: Finished difference Result 5704 states and 19279 transitions. [2021-06-05 07:25:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:25:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:09,281 INFO L225 Difference]: With dead ends: 5704 [2021-06-05 07:25:09,281 INFO L226 Difference]: Without dead ends: 5641 [2021-06-05 07:25:09,282 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1094.2ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:25:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2021-06-05 07:25:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4490. [2021-06-05 07:25:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.3686789930942305) internal successors, (15122), 4489 states have internal predecessors, (15122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15122 transitions. [2021-06-05 07:25:09,360 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15122 transitions. Word has length 39 [2021-06-05 07:25:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:09,360 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15122 transitions. [2021-06-05 07:25:09,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15122 transitions. [2021-06-05 07:25:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:09,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:09,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:09,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 07:25:09,366 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash -328300650, now seen corresponding path program 339 times [2021-06-05 07:25:09,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:09,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826050373] [2021-06-05 07:25:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:09,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:09,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826050373] [2021-06-05 07:25:09,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826050373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:09,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:09,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:09,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334450396] [2021-06-05 07:25:09,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:09,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:09,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:09,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:09,582 INFO L87 Difference]: Start difference. First operand 4490 states and 15122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:11,367 INFO L93 Difference]: Finished difference Result 5775 states and 19452 transitions. [2021-06-05 07:25:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:25:11,367 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:11,377 INFO L225 Difference]: With dead ends: 5775 [2021-06-05 07:25:11,377 INFO L226 Difference]: Without dead ends: 5700 [2021-06-05 07:25:11,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1107.3ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 07:25:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-06-05 07:25:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 4478. [2021-06-05 07:25:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.371007371007371) internal successors, (15092), 4477 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15092 transitions. [2021-06-05 07:25:11,449 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15092 transitions. Word has length 39 [2021-06-05 07:25:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:11,449 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15092 transitions. [2021-06-05 07:25:11,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15092 transitions. [2021-06-05 07:25:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:11,455 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:11,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:11,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 07:25:11,455 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1512005288, now seen corresponding path program 340 times [2021-06-05 07:25:11,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:11,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417874263] [2021-06-05 07:25:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:11,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:11,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417874263] [2021-06-05 07:25:11,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417874263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:11,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:11,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:11,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175813809] [2021-06-05 07:25:11,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:11,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:11,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:11,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:11,639 INFO L87 Difference]: Start difference. First operand 4478 states and 15092 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:13,624 INFO L93 Difference]: Finished difference Result 6319 states and 21196 transitions. [2021-06-05 07:25:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:25:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:13,634 INFO L225 Difference]: With dead ends: 6319 [2021-06-05 07:25:13,635 INFO L226 Difference]: Without dead ends: 6264 [2021-06-05 07:25:13,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1122.5ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:25:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2021-06-05 07:25:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 4484. [2021-06-05 07:25:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.36939549408878) internal successors, (15105), 4483 states have internal predecessors, (15105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15105 transitions. [2021-06-05 07:25:13,710 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15105 transitions. Word has length 39 [2021-06-05 07:25:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:13,710 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15105 transitions. [2021-06-05 07:25:13,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15105 transitions. [2021-06-05 07:25:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:13,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:13,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:13,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 07:25:13,715 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:13,716 INFO L82 PathProgramCache]: Analyzing trace with hash -174947274, now seen corresponding path program 341 times [2021-06-05 07:25:13,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:13,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074488456] [2021-06-05 07:25:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:13,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:13,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074488456] [2021-06-05 07:25:13,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074488456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:13,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:13,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:13,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222736985] [2021-06-05 07:25:13,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:13,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:13,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:13,900 INFO L87 Difference]: Start difference. First operand 4484 states and 15105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:15,889 INFO L93 Difference]: Finished difference Result 6307 states and 21158 transitions. [2021-06-05 07:25:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:25:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:15,900 INFO L225 Difference]: With dead ends: 6307 [2021-06-05 07:25:15,900 INFO L226 Difference]: Without dead ends: 6234 [2021-06-05 07:25:15,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1146.4ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:25:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-06-05 07:25:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 4474. [2021-06-05 07:25:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 3.3722334004024144) internal successors, (15084), 4473 states have internal predecessors, (15084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 15084 transitions. [2021-06-05 07:25:15,981 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 15084 transitions. Word has length 39 [2021-06-05 07:25:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:15,981 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 15084 transitions. [2021-06-05 07:25:15,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 15084 transitions. [2021-06-05 07:25:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:15,987 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:15,988 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:15,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 07:25:15,988 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash -544522038, now seen corresponding path program 342 times [2021-06-05 07:25:15,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:15,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372505456] [2021-06-05 07:25:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:16,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:16,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372505456] [2021-06-05 07:25:16,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372505456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:16,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:16,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760464421] [2021-06-05 07:25:16,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:16,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:16,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:16,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:16,174 INFO L87 Difference]: Start difference. First operand 4474 states and 15084 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:19,495 INFO L93 Difference]: Finished difference Result 8942 states and 29698 transitions. [2021-06-05 07:25:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 07:25:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:19,509 INFO L225 Difference]: With dead ends: 8942 [2021-06-05 07:25:19,509 INFO L226 Difference]: Without dead ends: 8742 [2021-06-05 07:25:19,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 2073.2ms TimeCoverageRelationStatistics Valid=797, Invalid=9709, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 07:25:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-06-05 07:25:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 5078. [2021-06-05 07:25:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 3.3890092574354935) internal successors, (17206), 5077 states have internal predecessors, (17206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 17206 transitions. [2021-06-05 07:25:19,601 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 17206 transitions. Word has length 39 [2021-06-05 07:25:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:19,601 INFO L482 AbstractCegarLoop]: Abstraction has 5078 states and 17206 transitions. [2021-06-05 07:25:19,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 17206 transitions. [2021-06-05 07:25:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:19,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:19,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:19,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 07:25:19,607 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:19,608 INFO L82 PathProgramCache]: Analyzing trace with hash 628130184, now seen corresponding path program 343 times [2021-06-05 07:25:19,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:19,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980543011] [2021-06-05 07:25:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:19,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:19,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980543011] [2021-06-05 07:25:19,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980543011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:19,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:19,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:19,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502219190] [2021-06-05 07:25:19,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:19,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:19,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:19,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:19,791 INFO L87 Difference]: Start difference. First operand 5078 states and 17206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:22,964 INFO L93 Difference]: Finished difference Result 9109 states and 30181 transitions. [2021-06-05 07:25:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 07:25:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:22,979 INFO L225 Difference]: With dead ends: 9109 [2021-06-05 07:25:22,979 INFO L226 Difference]: Without dead ends: 8872 [2021-06-05 07:25:22,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 1993.5ms TimeCoverageRelationStatistics Valid=751, Invalid=8755, Unknown=0, NotChecked=0, Total=9506 [2021-06-05 07:25:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8872 states. [2021-06-05 07:25:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8872 to 5058. [2021-06-05 07:25:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5057 states have (on average 3.3925252125766265) internal successors, (17156), 5057 states have internal predecessors, (17156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 17156 transitions. [2021-06-05 07:25:23,081 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 17156 transitions. Word has length 39 [2021-06-05 07:25:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:23,082 INFO L482 AbstractCegarLoop]: Abstraction has 5058 states and 17156 transitions. [2021-06-05 07:25:23,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 17156 transitions. [2021-06-05 07:25:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:23,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:23,088 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:23,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 07:25:23,089 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash 560385304, now seen corresponding path program 344 times [2021-06-05 07:25:23,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:23,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716567364] [2021-06-05 07:25:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:23,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:23,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716567364] [2021-06-05 07:25:23,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716567364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:23,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:23,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:23,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869379619] [2021-06-05 07:25:23,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:23,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:23,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:23,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:23,274 INFO L87 Difference]: Start difference. First operand 5058 states and 17156 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:26,490 INFO L93 Difference]: Finished difference Result 8857 states and 29514 transitions. [2021-06-05 07:25:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-06-05 07:25:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:26,505 INFO L225 Difference]: With dead ends: 8857 [2021-06-05 07:25:26,505 INFO L226 Difference]: Without dead ends: 8725 [2021-06-05 07:25:26,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3353 ImplicationChecksByTransitivity, 2009.1ms TimeCoverageRelationStatistics Valid=761, Invalid=9339, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 07:25:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8725 states. [2021-06-05 07:25:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8725 to 5099. [2021-06-05 07:25:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3856414280109846) internal successors, (17260), 5098 states have internal predecessors, (17260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 17260 transitions. [2021-06-05 07:25:26,600 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 17260 transitions. Word has length 39 [2021-06-05 07:25:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:26,600 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 17260 transitions. [2021-06-05 07:25:26,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 17260 transitions. [2021-06-05 07:25:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:26,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:26,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:26,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 07:25:26,606 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1367256454, now seen corresponding path program 345 times [2021-06-05 07:25:26,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:26,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147406909] [2021-06-05 07:25:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:26,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:26,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147406909] [2021-06-05 07:25:26,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147406909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:26,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:26,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:26,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740498298] [2021-06-05 07:25:26,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:26,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:26,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:26,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:26,816 INFO L87 Difference]: Start difference. First operand 5099 states and 17260 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:29,896 INFO L93 Difference]: Finished difference Result 8987 states and 29894 transitions. [2021-06-05 07:25:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 07:25:29,896 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:29,910 INFO L225 Difference]: With dead ends: 8987 [2021-06-05 07:25:29,910 INFO L226 Difference]: Without dead ends: 8822 [2021-06-05 07:25:29,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 1917.6ms TimeCoverageRelationStatistics Valid=715, Invalid=8405, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 07:25:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2021-06-05 07:25:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 5081. [2021-06-05 07:25:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 3.3897637795275593) internal successors, (17220), 5080 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 17220 transitions. [2021-06-05 07:25:29,996 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 17220 transitions. Word has length 39 [2021-06-05 07:25:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:29,996 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 17220 transitions. [2021-06-05 07:25:29,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 17220 transitions. [2021-06-05 07:25:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:30,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:30,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:30,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 07:25:30,003 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash 699557460, now seen corresponding path program 346 times [2021-06-05 07:25:30,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:30,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979351871] [2021-06-05 07:25:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:30,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:30,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979351871] [2021-06-05 07:25:30,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979351871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:30,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:30,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:30,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958128239] [2021-06-05 07:25:30,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:30,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:30,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:30,186 INFO L87 Difference]: Start difference. First operand 5081 states and 17220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:32,743 INFO L93 Difference]: Finished difference Result 6596 states and 21948 transitions. [2021-06-05 07:25:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 07:25:32,743 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:32,752 INFO L225 Difference]: With dead ends: 6596 [2021-06-05 07:25:32,752 INFO L226 Difference]: Without dead ends: 6462 [2021-06-05 07:25:32,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 1713.8ms TimeCoverageRelationStatistics Valid=579, Invalid=6561, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 07:25:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2021-06-05 07:25:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 5094. [2021-06-05 07:25:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 3.389554290202238) internal successors, (17263), 5093 states have internal predecessors, (17263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 17263 transitions. [2021-06-05 07:25:32,829 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 17263 transitions. Word has length 39 [2021-06-05 07:25:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:32,829 INFO L482 AbstractCegarLoop]: Abstraction has 5094 states and 17263 transitions. [2021-06-05 07:25:32,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 17263 transitions. [2021-06-05 07:25:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:32,836 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:32,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:32,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 07:25:32,836 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:32,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1618041030, now seen corresponding path program 347 times [2021-06-05 07:25:32,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:32,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368503406] [2021-06-05 07:25:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:33,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:33,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368503406] [2021-06-05 07:25:33,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368503406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:33,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:33,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:33,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989513080] [2021-06-05 07:25:33,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:33,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:33,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:33,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:33,018 INFO L87 Difference]: Start difference. First operand 5094 states and 17263 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:34,765 INFO L93 Difference]: Finished difference Result 6368 states and 21399 transitions. [2021-06-05 07:25:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:25:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:34,776 INFO L225 Difference]: With dead ends: 6368 [2021-06-05 07:25:34,777 INFO L226 Difference]: Without dead ends: 6325 [2021-06-05 07:25:34,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1099.4ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:25:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-06-05 07:25:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5100. [2021-06-05 07:25:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5099 states have (on average 3.3881153167287703) internal successors, (17276), 5099 states have internal predecessors, (17276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 17276 transitions. [2021-06-05 07:25:34,861 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 17276 transitions. Word has length 39 [2021-06-05 07:25:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:34,861 INFO L482 AbstractCegarLoop]: Abstraction has 5100 states and 17276 transitions. [2021-06-05 07:25:34,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 17276 transitions. [2021-06-05 07:25:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:34,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:34,868 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:34,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 07:25:34,868 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1638189764, now seen corresponding path program 348 times [2021-06-05 07:25:34,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:34,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153800227] [2021-06-05 07:25:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:35,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:35,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153800227] [2021-06-05 07:25:35,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153800227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:35,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:35,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:35,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127935879] [2021-06-05 07:25:35,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:35,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:35,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:35,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:35,054 INFO L87 Difference]: Start difference. First operand 5100 states and 17276 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:36,891 INFO L93 Difference]: Finished difference Result 6328 states and 21316 transitions. [2021-06-05 07:25:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 07:25:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:36,902 INFO L225 Difference]: With dead ends: 6328 [2021-06-05 07:25:36,902 INFO L226 Difference]: Without dead ends: 6285 [2021-06-05 07:25:36,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1185.1ms TimeCoverageRelationStatistics Valid=382, Invalid=3908, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:25:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2021-06-05 07:25:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 5096. [2021-06-05 07:25:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5095 states have (on average 3.3888125613346416) internal successors, (17266), 5095 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 17266 transitions. [2021-06-05 07:25:36,981 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 17266 transitions. Word has length 39 [2021-06-05 07:25:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:36,981 INFO L482 AbstractCegarLoop]: Abstraction has 5096 states and 17266 transitions. [2021-06-05 07:25:36,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 17266 transitions. [2021-06-05 07:25:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:36,987 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:36,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:36,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 07:25:36,988 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1504274044, now seen corresponding path program 349 times [2021-06-05 07:25:36,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:36,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882472608] [2021-06-05 07:25:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:37,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:37,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882472608] [2021-06-05 07:25:37,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882472608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:37,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:37,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:37,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822933257] [2021-06-05 07:25:37,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:37,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:37,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:37,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:37,172 INFO L87 Difference]: Start difference. First operand 5096 states and 17266 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:39,069 INFO L93 Difference]: Finished difference Result 6399 states and 21476 transitions. [2021-06-05 07:25:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:25:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:39,080 INFO L225 Difference]: With dead ends: 6399 [2021-06-05 07:25:39,080 INFO L226 Difference]: Without dead ends: 6339 [2021-06-05 07:25:39,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1241.3ms TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:25:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2021-06-05 07:25:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 5096. [2021-06-05 07:25:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5095 states have (on average 3.3888125613346416) internal successors, (17266), 5095 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 17266 transitions. [2021-06-05 07:25:39,160 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 17266 transitions. Word has length 39 [2021-06-05 07:25:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:39,160 INFO L482 AbstractCegarLoop]: Abstraction has 5096 states and 17266 transitions. [2021-06-05 07:25:39,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 17266 transitions. [2021-06-05 07:25:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:39,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:39,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:39,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 07:25:39,167 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:39,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:39,167 INFO L82 PathProgramCache]: Analyzing trace with hash 711126710, now seen corresponding path program 350 times [2021-06-05 07:25:39,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:39,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071721598] [2021-06-05 07:25:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:39,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:39,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071721598] [2021-06-05 07:25:39,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071721598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:39,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:39,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:25:39,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890334628] [2021-06-05 07:25:39,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:25:39,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:39,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:25:39,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:25:39,337 INFO L87 Difference]: Start difference. First operand 5096 states and 17266 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:41,037 INFO L93 Difference]: Finished difference Result 6370 states and 21417 transitions. [2021-06-05 07:25:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 07:25:41,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:41,047 INFO L225 Difference]: With dead ends: 6370 [2021-06-05 07:25:41,047 INFO L226 Difference]: Without dead ends: 6294 [2021-06-05 07:25:41,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1093.2ms TimeCoverageRelationStatistics Valid=358, Invalid=3548, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 07:25:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6294 states. [2021-06-05 07:25:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 5104. [2021-06-05 07:25:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.3866353125612383) internal successors, (17282), 5103 states have internal predecessors, (17282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 17282 transitions. [2021-06-05 07:25:41,120 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 17282 transitions. Word has length 39 [2021-06-05 07:25:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:41,120 INFO L482 AbstractCegarLoop]: Abstraction has 5104 states and 17282 transitions. [2021-06-05 07:25:41,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 17282 transitions. [2021-06-05 07:25:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:41,126 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:41,126 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:41,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 07:25:41,126 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash -306926902, now seen corresponding path program 351 times [2021-06-05 07:25:41,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:41,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533436333] [2021-06-05 07:25:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:41,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:41,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533436333] [2021-06-05 07:25:41,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533436333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:41,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:41,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:41,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3788718] [2021-06-05 07:25:41,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:41,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:41,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:41,308 INFO L87 Difference]: Start difference. First operand 5104 states and 17282 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:43,115 INFO L93 Difference]: Finished difference Result 6352 states and 21363 transitions. [2021-06-05 07:25:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:25:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:43,126 INFO L225 Difference]: With dead ends: 6352 [2021-06-05 07:25:43,126 INFO L226 Difference]: Without dead ends: 6282 [2021-06-05 07:25:43,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1160.9ms TimeCoverageRelationStatistics Valid=383, Invalid=4039, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:25:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-06-05 07:25:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5092. [2021-06-05 07:25:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 3.3887252013356903) internal successors, (17252), 5091 states have internal predecessors, (17252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 17252 transitions. [2021-06-05 07:25:43,205 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 17252 transitions. Word has length 39 [2021-06-05 07:25:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:43,205 INFO L482 AbstractCegarLoop]: Abstraction has 5092 states and 17252 transitions. [2021-06-05 07:25:43,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 17252 transitions. [2021-06-05 07:25:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:43,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:43,212 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:43,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 07:25:43,212 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:43,212 INFO L82 PathProgramCache]: Analyzing trace with hash 169460968, now seen corresponding path program 352 times [2021-06-05 07:25:43,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:43,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35817938] [2021-06-05 07:25:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:43,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:43,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35817938] [2021-06-05 07:25:43,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35817938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:43,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:43,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:43,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895069296] [2021-06-05 07:25:43,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:43,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:43,397 INFO L87 Difference]: Start difference. First operand 5092 states and 17252 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:45,955 INFO L93 Difference]: Finished difference Result 6595 states and 21976 transitions. [2021-06-05 07:25:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 07:25:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:45,965 INFO L225 Difference]: With dead ends: 6595 [2021-06-05 07:25:45,966 INFO L226 Difference]: Without dead ends: 6451 [2021-06-05 07:25:45,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 1712.4ms TimeCoverageRelationStatistics Valid=569, Invalid=6571, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 07:25:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-06-05 07:25:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5101. [2021-06-05 07:25:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 3.3866666666666667) internal successors, (17272), 5100 states have internal predecessors, (17272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 17272 transitions. [2021-06-05 07:25:46,045 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 17272 transitions. Word has length 39 [2021-06-05 07:25:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:46,045 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 17272 transitions. [2021-06-05 07:25:46,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 17272 transitions. [2021-06-05 07:25:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:46,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:46,051 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:46,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 07:25:46,052 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1367958262, now seen corresponding path program 353 times [2021-06-05 07:25:46,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:46,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855568611] [2021-06-05 07:25:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:46,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:46,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855568611] [2021-06-05 07:25:46,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855568611] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:46,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:46,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:46,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533333387] [2021-06-05 07:25:46,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:46,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:46,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:46,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:46,238 INFO L87 Difference]: Start difference. First operand 5101 states and 17272 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:48,004 INFO L93 Difference]: Finished difference Result 6409 states and 21515 transitions. [2021-06-05 07:25:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:25:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:48,015 INFO L225 Difference]: With dead ends: 6409 [2021-06-05 07:25:48,015 INFO L226 Difference]: Without dead ends: 6366 [2021-06-05 07:25:48,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1099.5ms TimeCoverageRelationStatistics Valid=359, Invalid=3801, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:25:48,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-06-05 07:25:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 5110. [2021-06-05 07:25:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5109 states have (on average 3.3848111176355453) internal successors, (17293), 5109 states have internal predecessors, (17293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 17293 transitions. [2021-06-05 07:25:48,097 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 17293 transitions. Word has length 39 [2021-06-05 07:25:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:48,098 INFO L482 AbstractCegarLoop]: Abstraction has 5110 states and 17293 transitions. [2021-06-05 07:25:48,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 17293 transitions. [2021-06-05 07:25:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:48,104 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:48,104 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:48,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 07:25:48,104 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash 382148874, now seen corresponding path program 354 times [2021-06-05 07:25:48,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:48,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64166559] [2021-06-05 07:25:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:48,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:48,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64166559] [2021-06-05 07:25:48,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64166559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:48,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:48,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:48,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607145873] [2021-06-05 07:25:48,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:48,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:48,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:48,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:48,287 INFO L87 Difference]: Start difference. First operand 5110 states and 17293 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:50,138 INFO L93 Difference]: Finished difference Result 6317 states and 21249 transitions. [2021-06-05 07:25:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:25:50,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:50,149 INFO L225 Difference]: With dead ends: 6317 [2021-06-05 07:25:50,149 INFO L226 Difference]: Without dead ends: 6266 [2021-06-05 07:25:50,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1148.0ms TimeCoverageRelationStatistics Valid=355, Invalid=3805, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:25:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2021-06-05 07:25:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 5104. [2021-06-05 07:25:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.3856554967666077) internal successors, (17277), 5103 states have internal predecessors, (17277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 17277 transitions. [2021-06-05 07:25:50,228 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 17277 transitions. Word has length 39 [2021-06-05 07:25:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:50,228 INFO L482 AbstractCegarLoop]: Abstraction has 5104 states and 17277 transitions. [2021-06-05 07:25:50,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 17277 transitions. [2021-06-05 07:25:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:50,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:50,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:50,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 07:25:50,234 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:50,235 INFO L82 PathProgramCache]: Analyzing trace with hash 999367276, now seen corresponding path program 355 times [2021-06-05 07:25:50,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:50,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258981073] [2021-06-05 07:25:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:50,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:50,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258981073] [2021-06-05 07:25:50,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258981073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:50,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:50,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:50,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927953080] [2021-06-05 07:25:50,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:50,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:50,419 INFO L87 Difference]: Start difference. First operand 5104 states and 17277 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:52,360 INFO L93 Difference]: Finished difference Result 6475 states and 21664 transitions. [2021-06-05 07:25:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 07:25:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:52,370 INFO L225 Difference]: With dead ends: 6475 [2021-06-05 07:25:52,371 INFO L226 Difference]: Without dead ends: 6403 [2021-06-05 07:25:52,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1240.2ms TimeCoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 07:25:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2021-06-05 07:25:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 5099. [2021-06-05 07:25:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3864260494311496) internal successors, (17264), 5098 states have internal predecessors, (17264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 17264 transitions. [2021-06-05 07:25:52,445 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 17264 transitions. Word has length 39 [2021-06-05 07:25:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:52,446 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 17264 transitions. [2021-06-05 07:25:52,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 17264 transitions. [2021-06-05 07:25:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:52,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:52,452 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:52,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 07:25:52,452 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:52,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1016316924, now seen corresponding path program 356 times [2021-06-05 07:25:52,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:52,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393041381] [2021-06-05 07:25:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:52,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:52,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393041381] [2021-06-05 07:25:52,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393041381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:52,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:52,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:25:52,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485246883] [2021-06-05 07:25:52,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:25:52,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:25:52,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:25:52,622 INFO L87 Difference]: Start difference. First operand 5099 states and 17264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:54,237 INFO L93 Difference]: Finished difference Result 6356 states and 21401 transitions. [2021-06-05 07:25:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 07:25:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:54,248 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 07:25:54,248 INFO L226 Difference]: Without dead ends: 6280 [2021-06-05 07:25:54,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1011.1ms TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:25:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2021-06-05 07:25:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 5113. [2021-06-05 07:25:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 3.38302034428795) internal successors, (17294), 5112 states have internal predecessors, (17294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 17294 transitions. [2021-06-05 07:25:54,327 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 17294 transitions. Word has length 39 [2021-06-05 07:25:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:54,327 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 17294 transitions. [2021-06-05 07:25:54,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 17294 transitions. [2021-06-05 07:25:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:54,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:54,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:54,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 07:25:54,333 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1730728038, now seen corresponding path program 357 times [2021-06-05 07:25:54,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:54,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671130814] [2021-06-05 07:25:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:54,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:54,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671130814] [2021-06-05 07:25:54,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671130814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:54,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:54,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:54,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061236926] [2021-06-05 07:25:54,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:54,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:54,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:54,516 INFO L87 Difference]: Start difference. First operand 5113 states and 17294 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:56,260 INFO L93 Difference]: Finished difference Result 6395 states and 21473 transitions. [2021-06-05 07:25:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 07:25:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:56,271 INFO L225 Difference]: With dead ends: 6395 [2021-06-05 07:25:56,271 INFO L226 Difference]: Without dead ends: 6304 [2021-06-05 07:25:56,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1084.0ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:25:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2021-06-05 07:25:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 5089. [2021-06-05 07:25:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 3.388168238993711) internal successors, (17239), 5088 states have internal predecessors, (17239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 17239 transitions. [2021-06-05 07:25:56,356 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 17239 transitions. Word has length 39 [2021-06-05 07:25:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:56,356 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 17239 transitions. [2021-06-05 07:25:56,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 17239 transitions. [2021-06-05 07:25:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:56,363 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:56,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:56,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 07:25:56,363 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash -248976344, now seen corresponding path program 358 times [2021-06-05 07:25:56,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:56,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883957390] [2021-06-05 07:25:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:25:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:25:56,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:25:56,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883957390] [2021-06-05 07:25:56,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883957390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:25:56,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:25:56,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:25:56,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4421044] [2021-06-05 07:25:56,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:25:56,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:25:56,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:25:56,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:25:56,604 INFO L87 Difference]: Start difference. First operand 5089 states and 17239 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:25:59,724 INFO L93 Difference]: Finished difference Result 9645 states and 31815 transitions. [2021-06-05 07:25:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 07:25:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:25:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:25:59,740 INFO L225 Difference]: With dead ends: 9645 [2021-06-05 07:25:59,740 INFO L226 Difference]: Without dead ends: 9361 [2021-06-05 07:25:59,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1880.5ms TimeCoverageRelationStatistics Valid=687, Invalid=8243, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 07:25:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2021-06-05 07:25:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 5296. [2021-06-05 07:25:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 3.3909348441926346) internal successors, (17955), 5295 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 17955 transitions. [2021-06-05 07:25:59,838 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 17955 transitions. Word has length 39 [2021-06-05 07:25:59,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:25:59,839 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 17955 transitions. [2021-06-05 07:25:59,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:25:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 17955 transitions. [2021-06-05 07:25:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:25:59,845 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:25:59,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:25:59,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 07:25:59,845 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:25:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:25:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash 923675878, now seen corresponding path program 359 times [2021-06-05 07:25:59,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:25:59,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92644877] [2021-06-05 07:25:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:25:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:00,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:00,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92644877] [2021-06-05 07:26:00,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92644877] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:00,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:00,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:00,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504758401] [2021-06-05 07:26:00,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:00,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:00,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:00,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:00,027 INFO L87 Difference]: Start difference. First operand 5296 states and 17955 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:03,065 INFO L93 Difference]: Finished difference Result 9771 states and 32231 transitions. [2021-06-05 07:26:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-05 07:26:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:03,081 INFO L225 Difference]: With dead ends: 9771 [2021-06-05 07:26:03,081 INFO L226 Difference]: Without dead ends: 9609 [2021-06-05 07:26:03,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1795.7ms TimeCoverageRelationStatistics Valid=669, Invalid=7887, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 07:26:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2021-06-05 07:26:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 5309. [2021-06-05 07:26:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.3896006028636023) internal successors, (17992), 5308 states have internal predecessors, (17992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17992 transitions. [2021-06-05 07:26:03,182 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17992 transitions. Word has length 39 [2021-06-05 07:26:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:03,182 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17992 transitions. [2021-06-05 07:26:03,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17992 transitions. [2021-06-05 07:26:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:03,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:03,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:03,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 07:26:03,189 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:03,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:03,189 INFO L82 PathProgramCache]: Analyzing trace with hash 855930998, now seen corresponding path program 360 times [2021-06-05 07:26:03,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:03,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405534047] [2021-06-05 07:26:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:03,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:03,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405534047] [2021-06-05 07:26:03,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405534047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:03,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:03,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:03,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269204311] [2021-06-05 07:26:03,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:03,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:03,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:03,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:03,403 INFO L87 Difference]: Start difference. First operand 5309 states and 17992 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:06,463 INFO L93 Difference]: Finished difference Result 9489 states and 31430 transitions. [2021-06-05 07:26:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-05 07:26:06,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:06,479 INFO L225 Difference]: With dead ends: 9489 [2021-06-05 07:26:06,479 INFO L226 Difference]: Without dead ends: 9338 [2021-06-05 07:26:06,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1775.1ms TimeCoverageRelationStatistics Valid=650, Invalid=7906, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 07:26:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2021-06-05 07:26:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 5286. [2021-06-05 07:26:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5285 states have (on average 3.3892147587511827) internal successors, (17912), 5285 states have internal predecessors, (17912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 17912 transitions. [2021-06-05 07:26:06,583 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 17912 transitions. Word has length 39 [2021-06-05 07:26:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:06,583 INFO L482 AbstractCegarLoop]: Abstraction has 5286 states and 17912 transitions. [2021-06-05 07:26:06,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 17912 transitions. [2021-06-05 07:26:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:06,590 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:06,590 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:06,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 07:26:06,590 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:06,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1071710760, now seen corresponding path program 361 times [2021-06-05 07:26:06,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:06,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101587189] [2021-06-05 07:26:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:06,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:06,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101587189] [2021-06-05 07:26:06,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101587189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:06,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:06,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:06,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446056895] [2021-06-05 07:26:06,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:06,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:06,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:06,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:06,791 INFO L87 Difference]: Start difference. First operand 5286 states and 17912 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:09,793 INFO L93 Difference]: Finished difference Result 9665 states and 31976 transitions. [2021-06-05 07:26:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 07:26:09,793 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:09,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:09,808 INFO L225 Difference]: With dead ends: 9665 [2021-06-05 07:26:09,808 INFO L226 Difference]: Without dead ends: 9525 [2021-06-05 07:26:09,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1791.2ms TimeCoverageRelationStatistics Valid=633, Invalid=7557, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 07:26:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-06-05 07:26:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5237. [2021-06-05 07:26:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.3894194041252863) internal successors, (17747), 5236 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-06-05 07:26:09,907 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-06-05 07:26:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:09,907 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-06-05 07:26:09,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:09,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-06-05 07:26:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:09,914 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:09,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:09,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 07:26:09,914 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:09,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:09,914 INFO L82 PathProgramCache]: Analyzing trace with hash -562346440, now seen corresponding path program 362 times [2021-06-05 07:26:09,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:09,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053765950] [2021-06-05 07:26:09,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:10,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:10,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053765950] [2021-06-05 07:26:10,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053765950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:10,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:10,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:10,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972722697] [2021-06-05 07:26:10,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:10,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:10,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:10,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:10,097 INFO L87 Difference]: Start difference. First operand 5237 states and 17747 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:11,852 INFO L93 Difference]: Finished difference Result 5863 states and 19501 transitions. [2021-06-05 07:26:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 07:26:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:11,861 INFO L225 Difference]: With dead ends: 5863 [2021-06-05 07:26:11,861 INFO L226 Difference]: Without dead ends: 5799 [2021-06-05 07:26:11,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1121.7ms TimeCoverageRelationStatistics Valid=349, Invalid=3811, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:26:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-06-05 07:26:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5241. [2021-06-05 07:26:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 3.3887404580152674) internal successors, (17757), 5240 states have internal predecessors, (17757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 17757 transitions. [2021-06-05 07:26:11,943 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 17757 transitions. Word has length 39 [2021-06-05 07:26:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:11,943 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 17757 transitions. [2021-06-05 07:26:11,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 17757 transitions. [2021-06-05 07:26:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:11,950 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:11,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:11,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 07:26:11,950 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:11,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash 356137130, now seen corresponding path program 363 times [2021-06-05 07:26:11,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:11,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847420061] [2021-06-05 07:26:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:12,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:12,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847420061] [2021-06-05 07:26:12,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847420061] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:12,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:12,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:12,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028112652] [2021-06-05 07:26:12,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:12,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:12,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:12,149 INFO L87 Difference]: Start difference. First operand 5241 states and 17757 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:13,289 INFO L93 Difference]: Finished difference Result 5680 states and 18997 transitions. [2021-06-05 07:26:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:26:13,290 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:13,299 INFO L225 Difference]: With dead ends: 5680 [2021-06-05 07:26:13,299 INFO L226 Difference]: Without dead ends: 5637 [2021-06-05 07:26:13,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 723.5ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:26:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-06-05 07:26:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5247. [2021-06-05 07:26:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 3.3873427373236753) internal successors, (17770), 5246 states have internal predecessors, (17770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17770 transitions. [2021-06-05 07:26:13,375 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17770 transitions. Word has length 39 [2021-06-05 07:26:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:13,375 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 17770 transitions. [2021-06-05 07:26:13,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17770 transitions. [2021-06-05 07:26:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:13,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:13,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:13,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 07:26:13,382 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:13,382 INFO L82 PathProgramCache]: Analyzing trace with hash 376285864, now seen corresponding path program 364 times [2021-06-05 07:26:13,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:13,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803561450] [2021-06-05 07:26:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:13,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:13,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803561450] [2021-06-05 07:26:13,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803561450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:13,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:13,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:13,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247275390] [2021-06-05 07:26:13,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:13,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:13,565 INFO L87 Difference]: Start difference. First operand 5247 states and 17770 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:14,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:14,753 INFO L93 Difference]: Finished difference Result 5643 states and 18915 transitions. [2021-06-05 07:26:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:26:14,754 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:14,764 INFO L225 Difference]: With dead ends: 5643 [2021-06-05 07:26:14,764 INFO L226 Difference]: Without dead ends: 5600 [2021-06-05 07:26:14,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 746.8ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:26:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-06-05 07:26:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5243. [2021-06-05 07:26:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 3.3880198397558186) internal successors, (17760), 5242 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 17760 transitions. [2021-06-05 07:26:14,845 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 17760 transitions. Word has length 39 [2021-06-05 07:26:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:14,845 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 17760 transitions. [2021-06-05 07:26:14,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 17760 transitions. [2021-06-05 07:26:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:14,853 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:14,853 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:14,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 07:26:14,853 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:14,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1528789352, now seen corresponding path program 365 times [2021-06-05 07:26:14,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:14,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385272774] [2021-06-05 07:26:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:15,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:15,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385272774] [2021-06-05 07:26:15,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385272774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:15,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:15,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:15,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014603952] [2021-06-05 07:26:15,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:15,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:15,038 INFO L87 Difference]: Start difference. First operand 5243 states and 17760 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:16,318 INFO L93 Difference]: Finished difference Result 5714 states and 19112 transitions. [2021-06-05 07:26:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:26:16,318 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:16,327 INFO L225 Difference]: With dead ends: 5714 [2021-06-05 07:26:16,327 INFO L226 Difference]: Without dead ends: 5654 [2021-06-05 07:26:16,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 823.3ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:26:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-06-05 07:26:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5237. [2021-06-05 07:26:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.3894194041252863) internal successors, (17747), 5236 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-06-05 07:26:16,399 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-06-05 07:26:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:16,399 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-06-05 07:26:16,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-06-05 07:26:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:16,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:16,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:16,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 07:26:16,406 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:16,406 INFO L82 PathProgramCache]: Analyzing trace with hash -550777190, now seen corresponding path program 366 times [2021-06-05 07:26:16,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:16,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125682766] [2021-06-05 07:26:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:16,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:16,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125682766] [2021-06-05 07:26:16,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125682766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:16,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:16,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:26:16,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469098814] [2021-06-05 07:26:16,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:26:16,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:16,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:26:16,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:26:16,576 INFO L87 Difference]: Start difference. First operand 5237 states and 17747 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:17,729 INFO L93 Difference]: Finished difference Result 5682 states and 19052 transitions. [2021-06-05 07:26:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:26:17,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:17,738 INFO L225 Difference]: With dead ends: 5682 [2021-06-05 07:26:17,738 INFO L226 Difference]: Without dead ends: 5606 [2021-06-05 07:26:17,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 731.6ms TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:26:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2021-06-05 07:26:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5249. [2021-06-05 07:26:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 3.3862423780487805) internal successors, (17771), 5248 states have internal predecessors, (17771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 17771 transitions. [2021-06-05 07:26:17,816 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 17771 transitions. Word has length 39 [2021-06-05 07:26:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:17,816 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 17771 transitions. [2021-06-05 07:26:17,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 17771 transitions. [2021-06-05 07:26:17,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:17,823 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:17,823 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:17,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 07:26:17,823 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:17,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1568830802, now seen corresponding path program 367 times [2021-06-05 07:26:17,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:17,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500947612] [2021-06-05 07:26:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:18,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:18,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500947612] [2021-06-05 07:26:18,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500947612] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:18,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:18,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:18,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13837971] [2021-06-05 07:26:18,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:18,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:18,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:18,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:18,007 INFO L87 Difference]: Start difference. First operand 5249 states and 17771 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:19,241 INFO L93 Difference]: Finished difference Result 5664 states and 18998 transitions. [2021-06-05 07:26:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:26:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:19,250 INFO L225 Difference]: With dead ends: 5664 [2021-06-05 07:26:19,250 INFO L226 Difference]: Without dead ends: 5594 [2021-06-05 07:26:19,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 780.8ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:26:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-06-05 07:26:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5237. [2021-06-05 07:26:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.388655462184874) internal successors, (17743), 5236 states have internal predecessors, (17743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17743 transitions. [2021-06-05 07:26:19,323 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17743 transitions. Word has length 39 [2021-06-05 07:26:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:19,323 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17743 transitions. [2021-06-05 07:26:19,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17743 transitions. [2021-06-05 07:26:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:19,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:19,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:19,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 07:26:19,329 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1422348750, now seen corresponding path program 368 times [2021-06-05 07:26:19,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:19,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124220322] [2021-06-05 07:26:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:19,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:19,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124220322] [2021-06-05 07:26:19,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124220322] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:19,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:19,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:19,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320799603] [2021-06-05 07:26:19,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:19,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:19,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:19,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:19,513 INFO L87 Difference]: Start difference. First operand 5237 states and 17743 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:21,790 INFO L93 Difference]: Finished difference Result 8130 states and 27321 transitions. [2021-06-05 07:26:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 07:26:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:21,804 INFO L225 Difference]: With dead ends: 8130 [2021-06-05 07:26:21,804 INFO L226 Difference]: Without dead ends: 8024 [2021-06-05 07:26:21,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 1376.1ms TimeCoverageRelationStatistics Valid=457, Invalid=5243, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 07:26:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2021-06-05 07:26:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 5290. [2021-06-05 07:26:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.3891094724900737) internal successors, (17925), 5289 states have internal predecessors, (17925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17925 transitions. [2021-06-05 07:26:21,897 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17925 transitions. Word has length 39 [2021-06-05 07:26:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:21,897 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17925 transitions. [2021-06-05 07:26:21,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17925 transitions. [2021-06-05 07:26:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:21,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:21,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:21,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 07:26:21,904 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash -358249552, now seen corresponding path program 369 times [2021-06-05 07:26:21,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:21,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603100791] [2021-06-05 07:26:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:22,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:22,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603100791] [2021-06-05 07:26:22,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603100791] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:22,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:22,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:22,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627882419] [2021-06-05 07:26:22,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:22,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:22,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:22,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:22,091 INFO L87 Difference]: Start difference. First operand 5290 states and 17925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:24,717 INFO L93 Difference]: Finished difference Result 8948 states and 30175 transitions. [2021-06-05 07:26:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 07:26:24,717 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:24,732 INFO L225 Difference]: With dead ends: 8948 [2021-06-05 07:26:24,732 INFO L226 Difference]: Without dead ends: 8896 [2021-06-05 07:26:24,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 1563.0ms TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 07:26:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2021-06-05 07:26:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 5264. [2021-06-05 07:26:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3900817024510737) internal successors, (17842), 5263 states have internal predecessors, (17842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17842 transitions. [2021-06-05 07:26:24,835 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17842 transitions. Word has length 39 [2021-06-05 07:26:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:24,836 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17842 transitions. [2021-06-05 07:26:24,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17842 transitions. [2021-06-05 07:26:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:24,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:24,843 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:24,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 07:26:24,843 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:24,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1954134976, now seen corresponding path program 370 times [2021-06-05 07:26:24,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:24,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902446734] [2021-06-05 07:26:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:25,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:25,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902446734] [2021-06-05 07:26:25,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902446734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:25,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:25,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:25,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350240802] [2021-06-05 07:26:25,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:25,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:25,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:25,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:25,033 INFO L87 Difference]: Start difference. First operand 5264 states and 17842 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:26,529 INFO L93 Difference]: Finished difference Result 7462 states and 24986 transitions. [2021-06-05 07:26:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:26:26,530 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:26,542 INFO L225 Difference]: With dead ends: 7462 [2021-06-05 07:26:26,542 INFO L226 Difference]: Without dead ends: 7407 [2021-06-05 07:26:26,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 833.5ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:26:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2021-06-05 07:26:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 5290. [2021-06-05 07:26:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.390432974097183) internal successors, (17932), 5289 states have internal predecessors, (17932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17932 transitions. [2021-06-05 07:26:26,633 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17932 transitions. Word has length 39 [2021-06-05 07:26:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:26,633 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17932 transitions. [2021-06-05 07:26:26,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17932 transitions. [2021-06-05 07:26:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:26,640 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:26,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:26,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 07:26:26,641 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash -781482754, now seen corresponding path program 371 times [2021-06-05 07:26:26,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:26,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106623262] [2021-06-05 07:26:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:26,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:26,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106623262] [2021-06-05 07:26:26,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106623262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:26,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:26,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:26,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87269224] [2021-06-05 07:26:26,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:26,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:26,824 INFO L87 Difference]: Start difference. First operand 5290 states and 17932 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:28,815 INFO L93 Difference]: Finished difference Result 8195 states and 27530 transitions. [2021-06-05 07:26:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 07:26:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:28,829 INFO L225 Difference]: With dead ends: 8195 [2021-06-05 07:26:28,829 INFO L226 Difference]: Without dead ends: 8135 [2021-06-05 07:26:28,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1098.9ms TimeCoverageRelationStatistics Valid=357, Invalid=3803, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:26:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2021-06-05 07:26:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 5288. [2021-06-05 07:26:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 3.3907698127482506) internal successors, (17927), 5287 states have internal predecessors, (17927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17927 transitions. [2021-06-05 07:26:28,926 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17927 transitions. Word has length 39 [2021-06-05 07:26:28,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:28,926 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17927 transitions. [2021-06-05 07:26:28,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17927 transitions. [2021-06-05 07:26:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:28,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:28,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:28,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 07:26:28,934 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:28,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1636080940, now seen corresponding path program 372 times [2021-06-05 07:26:28,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:28,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069558146] [2021-06-05 07:26:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:29,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:29,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069558146] [2021-06-05 07:26:29,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069558146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:29,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:29,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:29,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674889811] [2021-06-05 07:26:29,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:29,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:29,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:29,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:29,165 INFO L87 Difference]: Start difference. First operand 5288 states and 17927 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:30,626 INFO L93 Difference]: Finished difference Result 7383 states and 24812 transitions. [2021-06-05 07:26:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:26:30,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:30,639 INFO L225 Difference]: With dead ends: 7383 [2021-06-05 07:26:30,639 INFO L226 Difference]: Without dead ends: 7292 [2021-06-05 07:26:30,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 825.8ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:26:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2021-06-05 07:26:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 5288. [2021-06-05 07:26:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 3.3896349536599204) internal successors, (17921), 5287 states have internal predecessors, (17921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17921 transitions. [2021-06-05 07:26:30,779 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17921 transitions. Word has length 39 [2021-06-05 07:26:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:30,779 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17921 transitions. [2021-06-05 07:26:30,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17921 transitions. [2021-06-05 07:26:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:30,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:30,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:30,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 07:26:30,787 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 133598734, now seen corresponding path program 373 times [2021-06-05 07:26:30,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:30,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690826095] [2021-06-05 07:26:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:30,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:30,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690826095] [2021-06-05 07:26:30,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690826095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:30,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:30,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:30,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773069288] [2021-06-05 07:26:30,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:30,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:30,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:30,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:30,970 INFO L87 Difference]: Start difference. First operand 5288 states and 17921 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:33,015 INFO L93 Difference]: Finished difference Result 8285 states and 27895 transitions. [2021-06-05 07:26:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 07:26:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:33,030 INFO L225 Difference]: With dead ends: 8285 [2021-06-05 07:26:33,031 INFO L226 Difference]: Without dead ends: 8185 [2021-06-05 07:26:33,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1104.9ms TimeCoverageRelationStatistics Valid=367, Invalid=3923, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 07:26:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2021-06-05 07:26:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 5282. [2021-06-05 07:26:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 3.389888278735088) internal successors, (17902), 5281 states have internal predecessors, (17902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17902 transitions. [2021-06-05 07:26:33,135 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17902 transitions. Word has length 39 [2021-06-05 07:26:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:33,135 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17902 transitions. [2021-06-05 07:26:33,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17902 transitions. [2021-06-05 07:26:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:33,142 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:33,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:33,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 07:26:33,143 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:33,143 INFO L82 PathProgramCache]: Analyzing trace with hash -103026262, now seen corresponding path program 374 times [2021-06-05 07:26:33,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:33,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030530649] [2021-06-05 07:26:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:33,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:33,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030530649] [2021-06-05 07:26:33,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030530649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:33,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:33,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:26:33,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145294931] [2021-06-05 07:26:33,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:26:33,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:33,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:26:33,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:26:33,312 INFO L87 Difference]: Start difference. First operand 5282 states and 17902 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:34,373 INFO L93 Difference]: Finished difference Result 5634 states and 18942 transitions. [2021-06-05 07:26:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:26:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:34,385 INFO L225 Difference]: With dead ends: 5634 [2021-06-05 07:26:34,385 INFO L226 Difference]: Without dead ends: 5558 [2021-06-05 07:26:34,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 644.2ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:26:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-06-05 07:26:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5326. [2021-06-05 07:26:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 3.3862910798122066) internal successors, (18032), 5325 states have internal predecessors, (18032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 18032 transitions. [2021-06-05 07:26:34,461 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 18032 transitions. Word has length 39 [2021-06-05 07:26:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:34,461 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 18032 transitions. [2021-06-05 07:26:34,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 18032 transitions. [2021-06-05 07:26:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:34,468 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:34,468 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:34,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 07:26:34,468 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1121079874, now seen corresponding path program 375 times [2021-06-05 07:26:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:34,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991827774] [2021-06-05 07:26:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:34,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:34,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991827774] [2021-06-05 07:26:34,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991827774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:34,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:34,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:34,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769986631] [2021-06-05 07:26:34,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:34,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:34,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:34,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:34,652 INFO L87 Difference]: Start difference. First operand 5326 states and 18032 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:35,873 INFO L93 Difference]: Finished difference Result 5616 states and 18888 transitions. [2021-06-05 07:26:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:26:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:35,883 INFO L225 Difference]: With dead ends: 5616 [2021-06-05 07:26:35,883 INFO L226 Difference]: Without dead ends: 5550 [2021-06-05 07:26:35,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 789.9ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:26:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-06-05 07:26:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5318. [2021-06-05 07:26:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 3.386872296407749) internal successors, (18008), 5317 states have internal predecessors, (18008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 18008 transitions. [2021-06-05 07:26:35,966 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 18008 transitions. Word has length 39 [2021-06-05 07:26:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:35,966 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 18008 transitions. [2021-06-05 07:26:35,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 18008 transitions. [2021-06-05 07:26:35,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:35,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:35,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:35,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 07:26:35,974 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:35,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1403345528, now seen corresponding path program 376 times [2021-06-05 07:26:35,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:35,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811664870] [2021-06-05 07:26:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:36,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:36,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811664870] [2021-06-05 07:26:36,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811664870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:36,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:36,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:36,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825562947] [2021-06-05 07:26:36,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:36,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:36,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:36,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:36,192 INFO L87 Difference]: Start difference. First operand 5318 states and 18008 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:37,327 INFO L93 Difference]: Finished difference Result 5629 states and 18921 transitions. [2021-06-05 07:26:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:26:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:37,337 INFO L225 Difference]: With dead ends: 5629 [2021-06-05 07:26:37,337 INFO L226 Difference]: Without dead ends: 5499 [2021-06-05 07:26:37,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 741.8ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:26:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-06-05 07:26:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5282. [2021-06-05 07:26:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 3.3883734141261126) internal successors, (17894), 5281 states have internal predecessors, (17894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17894 transitions. [2021-06-05 07:26:37,410 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17894 transitions. Word has length 39 [2021-06-05 07:26:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:37,410 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17894 transitions. [2021-06-05 07:26:37,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17894 transitions. [2021-06-05 07:26:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:37,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:37,416 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:37,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 07:26:37,417 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:37,417 INFO L82 PathProgramCache]: Analyzing trace with hash -355827722, now seen corresponding path program 377 times [2021-06-05 07:26:37,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:37,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818376884] [2021-06-05 07:26:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:37,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:37,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818376884] [2021-06-05 07:26:37,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818376884] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:37,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:37,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:37,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417468069] [2021-06-05 07:26:37,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:37,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:37,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:37,601 INFO L87 Difference]: Start difference. First operand 5282 states and 17894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:39,621 INFO L93 Difference]: Finished difference Result 5884 states and 19567 transitions. [2021-06-05 07:26:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 07:26:39,621 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:39,630 INFO L225 Difference]: With dead ends: 5884 [2021-06-05 07:26:39,630 INFO L226 Difference]: Without dead ends: 5820 [2021-06-05 07:26:39,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1359.6ms TimeCoverageRelationStatistics Valid=416, Invalid=4554, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 07:26:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-06-05 07:26:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5292. [2021-06-05 07:26:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 3.3883953883953883) internal successors, (17928), 5291 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 17928 transitions. [2021-06-05 07:26:39,703 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 17928 transitions. Word has length 39 [2021-06-05 07:26:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:39,704 INFO L482 AbstractCegarLoop]: Abstraction has 5292 states and 17928 transitions. [2021-06-05 07:26:39,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 17928 transitions. [2021-06-05 07:26:39,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:39,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:39,710 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:39,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 07:26:39,710 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:39,711 INFO L82 PathProgramCache]: Analyzing trace with hash 562655848, now seen corresponding path program 378 times [2021-06-05 07:26:39,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:39,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837980527] [2021-06-05 07:26:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:39,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:39,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837980527] [2021-06-05 07:26:39,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837980527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:39,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:39,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:39,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97247126] [2021-06-05 07:26:39,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:39,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:39,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:39,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:39,891 INFO L87 Difference]: Start difference. First operand 5292 states and 17928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:41,181 INFO L93 Difference]: Finished difference Result 5732 states and 19160 transitions. [2021-06-05 07:26:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:26:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:41,190 INFO L225 Difference]: With dead ends: 5732 [2021-06-05 07:26:41,190 INFO L226 Difference]: Without dead ends: 5689 [2021-06-05 07:26:41,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 819.1ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:26:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-06-05 07:26:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5298. [2021-06-05 07:26:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5297 states have (on average 3.387011515952426) internal successors, (17941), 5297 states have internal predecessors, (17941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 17941 transitions. [2021-06-05 07:26:41,264 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 17941 transitions. Word has length 39 [2021-06-05 07:26:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:41,265 INFO L482 AbstractCegarLoop]: Abstraction has 5298 states and 17941 transitions. [2021-06-05 07:26:41,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 17941 transitions. [2021-06-05 07:26:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:41,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:41,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:41,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 07:26:41,271 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:41,272 INFO L82 PathProgramCache]: Analyzing trace with hash 582804582, now seen corresponding path program 379 times [2021-06-05 07:26:41,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:41,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962763465] [2021-06-05 07:26:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:41,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:41,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962763465] [2021-06-05 07:26:41,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962763465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:41,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:41,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:41,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92753843] [2021-06-05 07:26:41,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:41,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:41,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:41,487 INFO L87 Difference]: Start difference. First operand 5298 states and 17941 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:42,775 INFO L93 Difference]: Finished difference Result 5695 states and 19078 transitions. [2021-06-05 07:26:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:26:42,775 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:42,785 INFO L225 Difference]: With dead ends: 5695 [2021-06-05 07:26:42,785 INFO L226 Difference]: Without dead ends: 5652 [2021-06-05 07:26:42,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 861.9ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:26:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-06-05 07:26:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5294. [2021-06-05 07:26:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 3.387681843944833) internal successors, (17931), 5293 states have internal predecessors, (17931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17931 transitions. [2021-06-05 07:26:42,866 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17931 transitions. Word has length 39 [2021-06-05 07:26:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:42,867 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 17931 transitions. [2021-06-05 07:26:42,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17931 transitions. [2021-06-05 07:26:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:42,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:42,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:42,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 07:26:42,874 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:42,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1735308070, now seen corresponding path program 380 times [2021-06-05 07:26:42,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:42,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745383055] [2021-06-05 07:26:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:43,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:43,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745383055] [2021-06-05 07:26:43,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745383055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:43,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:43,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:43,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706238161] [2021-06-05 07:26:43,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:43,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:43,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:43,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:43,057 INFO L87 Difference]: Start difference. First operand 5294 states and 17931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:44,572 INFO L93 Difference]: Finished difference Result 5736 states and 19182 transitions. [2021-06-05 07:26:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:26:44,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:44,581 INFO L225 Difference]: With dead ends: 5736 [2021-06-05 07:26:44,581 INFO L226 Difference]: Without dead ends: 5676 [2021-06-05 07:26:44,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1008.2ms TimeCoverageRelationStatistics Valid=308, Invalid=2998, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:26:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-05 07:26:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5300. [2021-06-05 07:26:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 3.387809020569919) internal successors, (17952), 5299 states have internal predecessors, (17952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17952 transitions. [2021-06-05 07:26:44,654 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17952 transitions. Word has length 39 [2021-06-05 07:26:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:44,654 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17952 transitions. [2021-06-05 07:26:44,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17952 transitions. [2021-06-05 07:26:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:44,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:44,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:44,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 07:26:44,661 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash -344258472, now seen corresponding path program 381 times [2021-06-05 07:26:44,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:44,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057083921] [2021-06-05 07:26:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:44,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:44,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057083921] [2021-06-05 07:26:44,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057083921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:44,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:44,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:26:44,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201723572] [2021-06-05 07:26:44,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:26:44,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:44,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:26:44,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:26:44,829 INFO L87 Difference]: Start difference. First operand 5300 states and 17952 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:46,137 INFO L93 Difference]: Finished difference Result 5707 states and 19123 transitions. [2021-06-05 07:26:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:26:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:46,146 INFO L225 Difference]: With dead ends: 5707 [2021-06-05 07:26:46,147 INFO L226 Difference]: Without dead ends: 5631 [2021-06-05 07:26:46,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 844.9ms TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:26:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-05 07:26:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5312. [2021-06-05 07:26:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 3.384673319525513) internal successors, (17976), 5311 states have internal predecessors, (17976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17976 transitions. [2021-06-05 07:26:46,225 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17976 transitions. Word has length 39 [2021-06-05 07:26:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:46,225 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17976 transitions. [2021-06-05 07:26:46,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17976 transitions. [2021-06-05 07:26:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:46,232 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:46,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:46,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 07:26:46,232 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1362312084, now seen corresponding path program 382 times [2021-06-05 07:26:46,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:46,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507136608] [2021-06-05 07:26:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:46,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:46,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507136608] [2021-06-05 07:26:46,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507136608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:46,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:46,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:46,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814823528] [2021-06-05 07:26:46,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:46,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:46,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:46,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:46,417 INFO L87 Difference]: Start difference. First operand 5312 states and 17976 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:47,850 INFO L93 Difference]: Finished difference Result 5689 states and 19069 transitions. [2021-06-05 07:26:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:26:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:47,859 INFO L225 Difference]: With dead ends: 5689 [2021-06-05 07:26:47,859 INFO L226 Difference]: Without dead ends: 5619 [2021-06-05 07:26:47,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 926.1ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:26:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2021-06-05 07:26:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5300. [2021-06-05 07:26:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 3.386676731458766) internal successors, (17946), 5299 states have internal predecessors, (17946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17946 transitions. [2021-06-05 07:26:47,932 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17946 transitions. Word has length 39 [2021-06-05 07:26:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:47,932 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17946 transitions. [2021-06-05 07:26:47,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17946 transitions. [2021-06-05 07:26:47,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:47,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:47,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:47,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 07:26:47,938 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:47,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:47,939 INFO L82 PathProgramCache]: Analyzing trace with hash -885924214, now seen corresponding path program 383 times [2021-06-05 07:26:47,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:47,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622506164] [2021-06-05 07:26:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:48,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:48,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622506164] [2021-06-05 07:26:48,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622506164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:48,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:48,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:48,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208731229] [2021-06-05 07:26:48,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:48,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:48,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:48,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:48,123 INFO L87 Difference]: Start difference. First operand 5300 states and 17946 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:50,061 INFO L93 Difference]: Finished difference Result 5861 states and 19500 transitions. [2021-06-05 07:26:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 07:26:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:50,069 INFO L225 Difference]: With dead ends: 5861 [2021-06-05 07:26:50,069 INFO L226 Difference]: Without dead ends: 5797 [2021-06-05 07:26:50,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1239.9ms TimeCoverageRelationStatistics Valid=366, Invalid=4056, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 07:26:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-06-05 07:26:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5309. [2021-06-05 07:26:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.3854559155990955) internal successors, (17970), 5308 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17970 transitions. [2021-06-05 07:26:50,140 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17970 transitions. Word has length 39 [2021-06-05 07:26:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:50,140 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17970 transitions. [2021-06-05 07:26:50,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17970 transitions. [2021-06-05 07:26:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:50,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:50,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:50,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 07:26:50,147 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:50,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1871623852, now seen corresponding path program 384 times [2021-06-05 07:26:50,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:50,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562476742] [2021-06-05 07:26:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:50,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:50,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562476742] [2021-06-05 07:26:50,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562476742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:50,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:50,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:50,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083138445] [2021-06-05 07:26:50,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:50,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:50,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:50,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:50,332 INFO L87 Difference]: Start difference. First operand 5309 states and 17970 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:51,546 INFO L93 Difference]: Finished difference Result 5712 states and 19100 transitions. [2021-06-05 07:26:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:26:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:51,556 INFO L225 Difference]: With dead ends: 5712 [2021-06-05 07:26:51,557 INFO L226 Difference]: Without dead ends: 5669 [2021-06-05 07:26:51,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 734.4ms TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:26:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-06-05 07:26:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5318. [2021-06-05 07:26:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 3.3836750047018995) internal successors, (17991), 5317 states have internal predecessors, (17991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 17991 transitions. [2021-06-05 07:26:51,634 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 17991 transitions. Word has length 39 [2021-06-05 07:26:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:51,634 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 17991 transitions. [2021-06-05 07:26:51,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 17991 transitions. [2021-06-05 07:26:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:51,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:51,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:51,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 07:26:51,642 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:51,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:51,642 INFO L82 PathProgramCache]: Analyzing trace with hash -673236308, now seen corresponding path program 385 times [2021-06-05 07:26:51,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:51,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447892272] [2021-06-05 07:26:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:51,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:51,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447892272] [2021-06-05 07:26:51,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447892272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:51,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:51,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:51,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809586273] [2021-06-05 07:26:51,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:51,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:51,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:51,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:51,833 INFO L87 Difference]: Start difference. First operand 5318 states and 17991 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:53,100 INFO L93 Difference]: Finished difference Result 5681 states and 19033 transitions. [2021-06-05 07:26:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:26:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:53,110 INFO L225 Difference]: With dead ends: 5681 [2021-06-05 07:26:53,111 INFO L226 Difference]: Without dead ends: 5630 [2021-06-05 07:26:53,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 782.5ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:26:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-06-05 07:26:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5312. [2021-06-05 07:26:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 3.3844850310675954) internal successors, (17975), 5311 states have internal predecessors, (17975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17975 transitions. [2021-06-05 07:26:53,196 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17975 transitions. Word has length 39 [2021-06-05 07:26:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:53,197 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17975 transitions. [2021-06-05 07:26:53,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17975 transitions. [2021-06-05 07:26:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:53,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:53,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:53,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 07:26:53,204 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash -56017906, now seen corresponding path program 386 times [2021-06-05 07:26:53,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:53,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390620817] [2021-06-05 07:26:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:53,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:53,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390620817] [2021-06-05 07:26:53,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390620817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:53,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:53,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:53,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070773764] [2021-06-05 07:26:53,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:53,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:53,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:53,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:53,388 INFO L87 Difference]: Start difference. First operand 5312 states and 17975 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:54,815 INFO L93 Difference]: Finished difference Result 5754 states and 19200 transitions. [2021-06-05 07:26:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:26:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:54,825 INFO L225 Difference]: With dead ends: 5754 [2021-06-05 07:26:54,825 INFO L226 Difference]: Without dead ends: 5708 [2021-06-05 07:26:54,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 915.9ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:26:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-06-05 07:26:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5319. [2021-06-05 07:26:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.382850695750282) internal successors, (17990), 5318 states have internal predecessors, (17990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17990 transitions. [2021-06-05 07:26:54,941 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17990 transitions. Word has length 39 [2021-06-05 07:26:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:54,941 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17990 transitions. [2021-06-05 07:26:54,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17990 transitions. [2021-06-05 07:26:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:54,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:54,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:54,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 07:26:54,948 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1491085396, now seen corresponding path program 387 times [2021-06-05 07:26:54,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:54,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363460967] [2021-06-05 07:26:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:55,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:55,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363460967] [2021-06-05 07:26:55,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363460967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:55,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:55,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:55,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879374792] [2021-06-05 07:26:55,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:55,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:55,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:55,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:55,133 INFO L87 Difference]: Start difference. First operand 5319 states and 17990 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:56,392 INFO L93 Difference]: Finished difference Result 5689 states and 19047 transitions. [2021-06-05 07:26:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:26:56,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:56,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:56,401 INFO L225 Difference]: With dead ends: 5689 [2021-06-05 07:26:56,401 INFO L226 Difference]: Without dead ends: 5634 [2021-06-05 07:26:56,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 786.7ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:26:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-06-05 07:26:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5316. [2021-06-05 07:26:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 3.3832549388523048) internal successors, (17982), 5315 states have internal predecessors, (17982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 17982 transitions. [2021-06-05 07:26:56,476 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 17982 transitions. Word has length 39 [2021-06-05 07:26:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:56,476 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 17982 transitions. [2021-06-05 07:26:56,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 17982 transitions. [2021-06-05 07:26:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:56,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:56,482 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:56,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 07:26:56,482 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2071702106, now seen corresponding path program 388 times [2021-06-05 07:26:56,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:56,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28636957] [2021-06-05 07:26:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:56,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:56,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28636957] [2021-06-05 07:26:56,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28636957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:56,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:56,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 07:26:56,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342470606] [2021-06-05 07:26:56,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:26:56,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:26:56,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:26:56,651 INFO L87 Difference]: Start difference. First operand 5316 states and 17982 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:57,959 INFO L93 Difference]: Finished difference Result 5650 states and 18957 transitions. [2021-06-05 07:26:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 07:26:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:57,968 INFO L225 Difference]: With dead ends: 5650 [2021-06-05 07:26:57,968 INFO L226 Difference]: Without dead ends: 5574 [2021-06-05 07:26:57,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 817.5ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:26:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-06-05 07:26:58,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5330. [2021-06-05 07:26:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3799962469506473) internal successors, (18012), 5329 states have internal predecessors, (18012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-06-05 07:26:58,037 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-06-05 07:26:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:58,037 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-06-05 07:26:58,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-06-05 07:26:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:58,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:58,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:58,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 07:26:58,044 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash 675342856, now seen corresponding path program 389 times [2021-06-05 07:26:58,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:58,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035513603] [2021-06-05 07:26:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:58,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:58,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035513603] [2021-06-05 07:26:58,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035513603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:58,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:58,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:58,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739311535] [2021-06-05 07:26:58,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:58,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:58,224 INFO L87 Difference]: Start difference. First operand 5330 states and 18012 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:26:59,602 INFO L93 Difference]: Finished difference Result 5674 states and 18990 transitions. [2021-06-05 07:26:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:26:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:26:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:26:59,612 INFO L225 Difference]: With dead ends: 5674 [2021-06-05 07:26:59,612 INFO L226 Difference]: Without dead ends: 5628 [2021-06-05 07:26:59,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 880.9ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:26:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2021-06-05 07:26:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5330. [2021-06-05 07:26:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3799962469506473) internal successors, (18012), 5329 states have internal predecessors, (18012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-06-05 07:26:59,688 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-06-05 07:26:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:26:59,688 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-06-05 07:26:59,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:26:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-06-05 07:26:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:26:59,695 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:26:59,695 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:26:59,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 07:26:59,695 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:26:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:26:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash -759724634, now seen corresponding path program 390 times [2021-06-05 07:26:59,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:26:59,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158189470] [2021-06-05 07:26:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:26:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:26:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:26:59,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:26:59,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158189470] [2021-06-05 07:26:59,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158189470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:26:59,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:26:59,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:26:59,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905474298] [2021-06-05 07:26:59,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:26:59,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:26:59,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:26:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:26:59,878 INFO L87 Difference]: Start difference. First operand 5330 states and 18012 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:01,099 INFO L93 Difference]: Finished difference Result 5602 states and 18822 transitions. [2021-06-05 07:27:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:27:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:01,109 INFO L225 Difference]: With dead ends: 5602 [2021-06-05 07:27:01,109 INFO L226 Difference]: Without dead ends: 5530 [2021-06-05 07:27:01,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 750.0ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:27:01,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-06-05 07:27:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5310. [2021-06-05 07:27:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5309 states have (on average 3.3834997174609156) internal successors, (17963), 5309 states have internal predecessors, (17963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 17963 transitions. [2021-06-05 07:27:01,193 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 17963 transitions. Word has length 39 [2021-06-05 07:27:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:01,193 INFO L482 AbstractCegarLoop]: Abstraction has 5310 states and 17963 transitions. [2021-06-05 07:27:01,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 17963 transitions. [2021-06-05 07:27:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:01,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:01,200 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:01,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 07:27:01,200 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1304361526, now seen corresponding path program 391 times [2021-06-05 07:27:01,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:01,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884964527] [2021-06-05 07:27:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:01,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:01,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884964527] [2021-06-05 07:27:01,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884964527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:01,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:01,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:01,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774418283] [2021-06-05 07:27:01,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:01,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:01,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:01,384 INFO L87 Difference]: Start difference. First operand 5310 states and 17963 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:02,860 INFO L93 Difference]: Finished difference Result 5762 states and 19200 transitions. [2021-06-05 07:27:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 07:27:02,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:02,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:02,869 INFO L225 Difference]: With dead ends: 5762 [2021-06-05 07:27:02,869 INFO L226 Difference]: Without dead ends: 5711 [2021-06-05 07:27:02,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 984.9ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:27:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-05 07:27:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5323. [2021-06-05 07:27:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5322 states have (on average 3.381999248402856) internal successors, (17999), 5322 states have internal predecessors, (17999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17999 transitions. [2021-06-05 07:27:02,976 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17999 transitions. Word has length 39 [2021-06-05 07:27:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:02,976 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17999 transitions. [2021-06-05 07:27:02,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17999 transitions. [2021-06-05 07:27:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:02,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:02,983 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:02,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 07:27:02,984 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1284212792, now seen corresponding path program 392 times [2021-06-05 07:27:02,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:02,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829315693] [2021-06-05 07:27:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:03,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:03,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829315693] [2021-06-05 07:27:03,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829315693] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:03,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:03,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:03,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238914289] [2021-06-05 07:27:03,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:03,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:03,167 INFO L87 Difference]: Start difference. First operand 5323 states and 17999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:04,550 INFO L93 Difference]: Finished difference Result 5729 states and 19122 transitions. [2021-06-05 07:27:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:27:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:04,560 INFO L225 Difference]: With dead ends: 5729 [2021-06-05 07:27:04,560 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 07:27:04,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 923.8ms TimeCoverageRelationStatistics Valid=292, Invalid=2788, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:27:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 07:27:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5323. [2021-06-05 07:27:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5322 states have (on average 3.3816234498308906) internal successors, (17997), 5322 states have internal predecessors, (17997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17997 transitions. [2021-06-05 07:27:04,638 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17997 transitions. Word has length 39 [2021-06-05 07:27:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:04,639 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17997 transitions. [2021-06-05 07:27:04,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17997 transitions. [2021-06-05 07:27:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:04,645 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:04,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:04,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 07:27:04,646 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:04,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash -131709304, now seen corresponding path program 393 times [2021-06-05 07:27:04,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:04,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366076951] [2021-06-05 07:27:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:04,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:04,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366076951] [2021-06-05 07:27:04,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366076951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:04,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:04,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:04,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077522541] [2021-06-05 07:27:04,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:04,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:04,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:04,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:04,829 INFO L87 Difference]: Start difference. First operand 5323 states and 17997 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:06,411 INFO L93 Difference]: Finished difference Result 5794 states and 19270 transitions. [2021-06-05 07:27:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 07:27:06,411 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:06,421 INFO L225 Difference]: With dead ends: 5794 [2021-06-05 07:27:06,421 INFO L226 Difference]: Without dead ends: 5734 [2021-06-05 07:27:06,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1076.6ms TimeCoverageRelationStatistics Valid=338, Invalid=3322, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 07:27:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-06-05 07:27:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5319. [2021-06-05 07:27:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.382098533283189) internal successors, (17986), 5318 states have internal predecessors, (17986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17986 transitions. [2021-06-05 07:27:06,506 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17986 transitions. Word has length 39 [2021-06-05 07:27:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:06,506 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17986 transitions. [2021-06-05 07:27:06,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17986 transitions. [2021-06-05 07:27:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:06,513 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:06,513 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:06,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 07:27:06,513 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:06,514 INFO L82 PathProgramCache]: Analyzing trace with hash -199454184, now seen corresponding path program 394 times [2021-06-05 07:27:06,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:06,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572063081] [2021-06-05 07:27:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:06,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:06,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572063081] [2021-06-05 07:27:06,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572063081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:06,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:06,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:06,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402290754] [2021-06-05 07:27:06,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:06,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:06,702 INFO L87 Difference]: Start difference. First operand 5319 states and 17986 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:08,077 INFO L93 Difference]: Finished difference Result 5736 states and 19120 transitions. [2021-06-05 07:27:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 07:27:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:08,086 INFO L225 Difference]: With dead ends: 5736 [2021-06-05 07:27:08,086 INFO L226 Difference]: Without dead ends: 5693 [2021-06-05 07:27:08,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 888.5ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:27:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2021-06-05 07:27:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5328. [2021-06-05 07:27:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.3803266378824857) internal successors, (18007), 5327 states have internal predecessors, (18007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18007 transitions. [2021-06-05 07:27:08,210 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18007 transitions. Word has length 39 [2021-06-05 07:27:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:08,210 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18007 transitions. [2021-06-05 07:27:08,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18007 transitions. [2021-06-05 07:27:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:08,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:08,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:08,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 07:27:08,218 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:08,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1550652952, now seen corresponding path program 395 times [2021-06-05 07:27:08,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:08,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837290363] [2021-06-05 07:27:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:08,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:08,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837290363] [2021-06-05 07:27:08,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837290363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:08,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:08,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:08,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777507158] [2021-06-05 07:27:08,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:08,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:08,401 INFO L87 Difference]: Start difference. First operand 5328 states and 18007 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:09,805 INFO L93 Difference]: Finished difference Result 5770 states and 19204 transitions. [2021-06-05 07:27:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 07:27:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:09,815 INFO L225 Difference]: With dead ends: 5770 [2021-06-05 07:27:09,815 INFO L226 Difference]: Without dead ends: 5670 [2021-06-05 07:27:09,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 920.6ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:27:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-06-05 07:27:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 5330. [2021-06-05 07:27:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3786826796772376) internal successors, (18005), 5329 states have internal predecessors, (18005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18005 transitions. [2021-06-05 07:27:09,896 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18005 transitions. Word has length 39 [2021-06-05 07:27:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:09,897 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18005 transitions. [2021-06-05 07:27:09,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18005 transitions. [2021-06-05 07:27:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:09,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:09,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:09,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 07:27:09,904 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:09,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2127095942, now seen corresponding path program 396 times [2021-06-05 07:27:09,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:09,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914911622] [2021-06-05 07:27:09,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:10,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:10,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914911622] [2021-06-05 07:27:10,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914911622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:10,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:10,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:10,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062417320] [2021-06-05 07:27:10,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:10,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:10,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:10,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:10,094 INFO L87 Difference]: Start difference. First operand 5330 states and 18005 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:11,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:11,599 INFO L93 Difference]: Finished difference Result 5722 states and 19087 transitions. [2021-06-05 07:27:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:27:11,599 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:11,608 INFO L225 Difference]: With dead ends: 5722 [2021-06-05 07:27:11,609 INFO L226 Difference]: Without dead ends: 5676 [2021-06-05 07:27:11,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1022.0ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:27:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-05 07:27:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5328. [2021-06-05 07:27:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.379388023277642) internal successors, (18002), 5327 states have internal predecessors, (18002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18002 transitions. [2021-06-05 07:27:11,691 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18002 transitions. Word has length 39 [2021-06-05 07:27:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:11,691 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18002 transitions. [2021-06-05 07:27:11,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18002 transitions. [2021-06-05 07:27:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:11,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:11,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:11,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 07:27:11,699 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash 732803864, now seen corresponding path program 397 times [2021-06-05 07:27:11,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:11,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961339743] [2021-06-05 07:27:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:11,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:11,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961339743] [2021-06-05 07:27:11,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961339743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:11,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:11,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:11,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025187394] [2021-06-05 07:27:11,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:11,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:11,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:11,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:11,883 INFO L87 Difference]: Start difference. First operand 5328 states and 18002 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:13,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:13,205 INFO L93 Difference]: Finished difference Result 5691 states and 19011 transitions. [2021-06-05 07:27:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:27:13,205 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:13,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:13,215 INFO L225 Difference]: With dead ends: 5691 [2021-06-05 07:27:13,215 INFO L226 Difference]: Without dead ends: 5630 [2021-06-05 07:27:13,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 851.0ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:27:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-06-05 07:27:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5319. [2021-06-05 07:27:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.38097028958255) internal successors, (17980), 5318 states have internal predecessors, (17980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17980 transitions. [2021-06-05 07:27:13,299 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17980 transitions. Word has length 39 [2021-06-05 07:27:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:13,299 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17980 transitions. [2021-06-05 07:27:13,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17980 transitions. [2021-06-05 07:27:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:13,306 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:13,306 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:13,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 07:27:13,306 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1009249178, now seen corresponding path program 398 times [2021-06-05 07:27:13,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:13,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420360008] [2021-06-05 07:27:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:13,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:13,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420360008] [2021-06-05 07:27:13,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420360008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:13,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:13,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357889473] [2021-06-05 07:27:13,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:13,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:13,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:13,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:13,492 INFO L87 Difference]: Start difference. First operand 5319 states and 17980 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:14,736 INFO L93 Difference]: Finished difference Result 5622 states and 18854 transitions. [2021-06-05 07:27:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:27:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:14,746 INFO L225 Difference]: With dead ends: 5622 [2021-06-05 07:27:14,746 INFO L226 Difference]: Without dead ends: 5579 [2021-06-05 07:27:14,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 808.4ms TimeCoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:27:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-06-05 07:27:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5315. [2021-06-05 07:27:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5314 states have (on average 3.3816334211516748) internal successors, (17970), 5314 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 17970 transitions. [2021-06-05 07:27:14,818 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 17970 transitions. Word has length 39 [2021-06-05 07:27:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:14,819 INFO L482 AbstractCegarLoop]: Abstraction has 5315 states and 17970 transitions. [2021-06-05 07:27:14,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 17970 transitions. [2021-06-05 07:27:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:14,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:14,825 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:14,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 07:27:14,825 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash -549899254, now seen corresponding path program 399 times [2021-06-05 07:27:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:14,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362325392] [2021-06-05 07:27:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:15,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:15,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362325392] [2021-06-05 07:27:15,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362325392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:15,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:15,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:15,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164453222] [2021-06-05 07:27:15,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:15,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:15,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:15,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:15,007 INFO L87 Difference]: Start difference. First operand 5315 states and 17970 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:16,252 INFO L93 Difference]: Finished difference Result 5624 states and 18861 transitions. [2021-06-05 07:27:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:27:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:16,262 INFO L225 Difference]: With dead ends: 5624 [2021-06-05 07:27:16,262 INFO L226 Difference]: Without dead ends: 5573 [2021-06-05 07:27:16,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 785.6ms TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:27:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-06-05 07:27:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5309. [2021-06-05 07:27:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.382629992464205) internal successors, (17955), 5308 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17955 transitions. [2021-06-05 07:27:16,359 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17955 transitions. Word has length 39 [2021-06-05 07:27:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:16,360 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17955 transitions. [2021-06-05 07:27:16,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17955 transitions. [2021-06-05 07:27:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:16,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:16,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:16,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 07:27:16,367 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash -175566746, now seen corresponding path program 400 times [2021-06-05 07:27:16,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:16,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154849688] [2021-06-05 07:27:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:16,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:16,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154849688] [2021-06-05 07:27:16,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154849688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:16,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:16,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:16,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112103213] [2021-06-05 07:27:16,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:16,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:16,549 INFO L87 Difference]: Start difference. First operand 5309 states and 17955 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:19,890 INFO L93 Difference]: Finished difference Result 9865 states and 32666 transitions. [2021-06-05 07:27:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 07:27:19,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:19,906 INFO L225 Difference]: With dead ends: 9865 [2021-06-05 07:27:19,907 INFO L226 Difference]: Without dead ends: 9742 [2021-06-05 07:27:19,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 1992.9ms TimeCoverageRelationStatistics Valid=742, Invalid=8764, Unknown=0, NotChecked=0, Total=9506 [2021-06-05 07:27:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-06-05 07:27:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 5434. [2021-06-05 07:27:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5433 states have (on average 3.3817412111172462) internal successors, (18373), 5433 states have internal predecessors, (18373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 18373 transitions. [2021-06-05 07:27:20,018 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 18373 transitions. Word has length 39 [2021-06-05 07:27:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:20,018 INFO L482 AbstractCegarLoop]: Abstraction has 5434 states and 18373 transitions. [2021-06-05 07:27:20,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 18373 transitions. [2021-06-05 07:27:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:20,025 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:20,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:20,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 07:27:20,025 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:20,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1933551160, now seen corresponding path program 401 times [2021-06-05 07:27:20,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:20,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912680486] [2021-06-05 07:27:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:20,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:20,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912680486] [2021-06-05 07:27:20,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912680486] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:20,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:20,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:20,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37220295] [2021-06-05 07:27:20,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:20,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:20,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:20,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:20,211 INFO L87 Difference]: Start difference. First operand 5434 states and 18373 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:27:23,570 INFO L93 Difference]: Finished difference Result 9720 states and 32238 transitions. [2021-06-05 07:27:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 07:27:23,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 07:27:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:27:23,586 INFO L225 Difference]: With dead ends: 9720 [2021-06-05 07:27:23,587 INFO L226 Difference]: Without dead ends: 9525 [2021-06-05 07:27:23,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 2002.1ms TimeCoverageRelationStatistics Valid=705, Invalid=8415, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 07:27:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-06-05 07:27:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5493. [2021-06-05 07:27:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3818281136198105) internal successors, (18573), 5492 states have internal predecessors, (18573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18573 transitions. [2021-06-05 07:27:23,685 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18573 transitions. Word has length 39 [2021-06-05 07:27:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:27:23,686 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18573 transitions. [2021-06-05 07:27:23,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:27:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18573 transitions. [2021-06-05 07:27:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 07:27:23,692 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:27:23,692 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:27:23,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 07:27:23,693 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 07:27:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:27:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash -602608834, now seen corresponding path program 402 times [2021-06-05 07:27:23,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:27:23,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606752670] [2021-06-05 07:27:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:27:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:27:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:27:23,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:27:23,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606752670] [2021-06-05 07:27:23,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606752670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:27:23,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:27:23,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 07:27:23,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018259370] [2021-06-05 07:27:23,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:27:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:27:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:27:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:27:23,874 INFO L87 Difference]: Start difference. First operand 5493 states and 18573 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 07:27:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 07:27:23,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 07:27:23,904 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 07:27:23,905 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 07:27:23,907 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 07:27:23,907 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:27:23 BasicIcfg [2021-06-05 07:27:23,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 07:27:23,908 INFO L168 Benchmark]: Toolchain (without parser) took 715153.12 ms. Allocated memory was 350.2 MB in the beginning and 1.3 GB in the end (delta: 956.3 MB). Free memory was 329.4 MB in the beginning and 667.6 MB in the end (delta: -338.2 MB). Peak memory consumption was 620.2 MB. Max. memory is 16.0 GB. [2021-06-05 07:27:23,908 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 350.2 MB. Free memory is still 330.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:27:23,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.07 ms. Allocated memory is still 350.2 MB. Free memory was 329.3 MB in the beginning and 327.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:27:23,908 INFO L168 Benchmark]: Boogie Preprocessor took 12.10 ms. Allocated memory is still 350.2 MB. Free memory was 327.8 MB in the beginning and 326.9 MB in the end (delta: 848.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:27:23,908 INFO L168 Benchmark]: RCFGBuilder took 225.10 ms. Allocated memory is still 350.2 MB. Free memory was 326.7 MB in the beginning and 313.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 07:27:23,908 INFO L168 Benchmark]: TraceAbstraction took 714888.93 ms. Allocated memory was 350.2 MB in the beginning and 1.3 GB in the end (delta: 956.3 MB). Free memory was 313.5 MB in the beginning and 667.6 MB in the end (delta: -354.0 MB). Peak memory consumption was 603.4 MB. Max. memory is 16.0 GB. [2021-06-05 07:27:23,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 350.2 MB. Free memory is still 330.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.07 ms. Allocated memory is still 350.2 MB. Free memory was 329.3 MB in the beginning and 327.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.10 ms. Allocated memory is still 350.2 MB. Free memory was 327.8 MB in the beginning and 326.9 MB in the end (delta: 848.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 225.10 ms. Allocated memory is still 350.2 MB. Free memory was 326.7 MB in the beginning and 313.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 714888.93 ms. Allocated memory was 350.2 MB in the beginning and 1.3 GB in the end (delta: 956.3 MB). Free memory was 313.5 MB in the beginning and 667.6 MB in the end (delta: -354.0 MB). Peak memory consumption was 603.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5493states) and FLOYD_HOARE automaton (currently 4 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5493states) and FLOYD_HOARE automaton (currently 4 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5493states) and FLOYD_HOARE automaton (currently 4 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5493states) and FLOYD_HOARE automaton (currently 4 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (5493states) and FLOYD_HOARE automaton (currently 4 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 714796.0ms, OverallIterations: 402, TraceHistogramMax: 1, EmptinessCheckTime: 2259.5ms, AutomataDifference: 606945.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 489.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62289 SDtfs, 118587 SDslu, 598703 SDs, 0 SdLazy, 670693 SolverSat, 22226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 218389.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23088 GetRequests, 542 SyntacticMatches, 833 SemanticMatches, 21712 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323330 ImplicationChecksByTransitivity, 380052.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5493occurred in iteration=401, InterpolantAutomatonStates: 19367, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27155.7ms AutomataMinimizationTime, 401 MinimizatonAttempts, 351056 StatesRemovedByMinimization, 399 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 175.4ms SsaConstructionTime, 654.4ms SatisfiabilityAnalysisTime, 75764.4ms InterpolantComputationTime, 15678 NumberOfCodeBlocks, 15678 NumberOfCodeBlocksAsserted, 402 NumberOfCheckSat, 15276 ConstructedInterpolants, 0 QuantifiedInterpolants, 199444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 402 InterpolantComputations, 402 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown