/usr/bin/java -Xmx8000000000 -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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 20:50:05,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 20:50:05,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 20:50:05,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 20:50:05,461 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 [2021-07-13 20:50:05,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 20:50:05,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 20:50:05,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 20:50:05,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 20:50:05,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 20:50:05,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 20:50:05,508 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 20:50:05,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 20:50:05,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 20:50:05,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 20:50:05,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 20:50:05,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 20:50:05,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 20:50:05,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 20:50:05,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 20:50:05,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 20:50:05,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 20:50:05,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 20:50:05,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 20:50:05,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 20:50:05,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 20:50:05,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 20:50:05,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 20:50:05,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 20:50:05,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 20:50:05,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 20:50:05,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 20:50:05,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 20:50:05,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 20:50:05,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 20:50:05,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 20:50:05,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 20:50:05,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 20:50:05,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 20:50:05,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 20:50:05,836 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 20:50:05,837 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 20:50:05,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-07-13 20:50:05,838 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-07-13 20:50:05,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 20:50:05,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 20:50:05,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 20:50:05,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 20:50:05,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 20:50:05,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 20:50:05,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 20:50:05,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 20:50:05,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 20:50:05,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/1) ... [2021-07-13 20:50:05,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 20:50:05,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 20:50:05,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 20:50:05,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 20:50:05,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (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 [2021-07-13 20:50:05,981 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 20:50:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 20:50:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 20:50:05,982 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 20:50:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 20:50:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 20:50:05,982 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 20:50:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 20:50:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 20:50:05,982 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 20:50:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 20:50:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 20:50:05,983 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-13 20:50:05,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-13 20:50:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-13 20:50:05,984 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 20:50:06,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 20:50:06,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 20:50:06,142 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:50:06 BoogieIcfgContainer [2021-07-13 20:50:06,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 20:50:06,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 20:50:06,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 20:50:06,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 20:50:06,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:50:05" (1/2) ... [2021-07-13 20:50:06,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13badbd8 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:50:06, skipping insertion in model container [2021-07-13 20:50:06,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:50:06" (2/2) ... [2021-07-13 20:50:06,161 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-07-13 20:50:06,165 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 20:50:06,165 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 20:50:06,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 20:50:06,166 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 20:50:06,256 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 20:50:06,273 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-13 20:50:06,287 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:50:06,288 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:50:06,288 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:50:06,288 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:50:06,288 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:50:06,288 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:50:06,288 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:50:06,289 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 20:50:06,298 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-07-13 20:50:06,525 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:06,597 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:06,598 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:06,598 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:06,607 INFO L82 PathProgramCache]: Analyzing trace with hash -633160358, now seen corresponding path program 1 times [2021-07-13 20:50:06,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:06,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161193670] [2021-07-13 20:50:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:06,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:06,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161193670] [2021-07-13 20:50:06,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161193670] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:06,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:06,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 20:50:06,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136020375] [2021-07-13 20:50:06,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:50:06,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:06,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:50:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:50:06,830 INFO L87 Difference]: Start difference. First operand has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 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) [2021-07-13 20:50:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:06,921 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-07-13 20:50:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:50:06,923 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 [2021-07-13 20:50:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:06,982 INFO L225 Difference]: With dead ends: 4197 [2021-07-13 20:50:06,982 INFO L226 Difference]: Without dead ends: 4197 [2021-07-13 20:50:06,984 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:50:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-07-13 20:50:07,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-07-13 20:50:07,310 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) [2021-07-13 20:50:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-07-13 20:50:07,338 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-07-13 20:50:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:07,338 INFO L482 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-07-13 20:50:07,339 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) [2021-07-13 20:50:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-07-13 20:50:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:07,356 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:07,356 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:07,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 20:50:07,357 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:07,361 INFO L82 PathProgramCache]: Analyzing trace with hash -33301778, now seen corresponding path program 2 times [2021-07-13 20:50:07,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:07,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254657177] [2021-07-13 20:50:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:07,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:07,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254657177] [2021-07-13 20:50:07,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254657177] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:07,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:07,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 20:50:07,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313274046] [2021-07-13 20:50:07,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:50:07,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:07,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:50:07,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:50:07,434 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) [2021-07-13 20:50:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:07,546 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-07-13 20:50:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:50:07,546 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 [2021-07-13 20:50:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:07,568 INFO L225 Difference]: With dead ends: 3290 [2021-07-13 20:50:07,568 INFO L226 Difference]: Without dead ends: 3290 [2021-07-13 20:50:07,569 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:50:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-07-13 20:50:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-07-13 20:50:07,688 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) [2021-07-13 20:50:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-07-13 20:50:07,704 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-07-13 20:50:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:07,705 INFO L482 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-07-13 20:50:07,705 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) [2021-07-13 20:50:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-07-13 20:50:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:07,757 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:07,758 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:07,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 20:50:07,758 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:07,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1266135666, now seen corresponding path program 3 times [2021-07-13 20:50:07,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:07,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572855137] [2021-07-13 20:50:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:08,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:08,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572855137] [2021-07-13 20:50:08,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572855137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:08,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:08,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:50:08,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712054635] [2021-07-13 20:50:08,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:50:08,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:08,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:50:08,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:50:08,293 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 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) [2021-07-13 20:50:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:11,253 INFO L93 Difference]: Finished difference Result 6515 states and 22109 transitions. [2021-07-13 20:50:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-13 20:50:11,254 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 [2021-07-13 20:50:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:11,297 INFO L225 Difference]: With dead ends: 6515 [2021-07-13 20:50:11,297 INFO L226 Difference]: Without dead ends: 6448 [2021-07-13 20:50:11,299 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1561.8ms TimeCoverageRelationStatistics Valid=319, Invalid=3221, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:50:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2021-07-13 20:50:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 3506. [2021-07-13 20:50:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 3505 states have (on average 3.3703281027104137) internal successors, (11813), 3505 states have internal predecessors, (11813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 11813 transitions. [2021-07-13 20:50:11,457 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 11813 transitions. Word has length 39 [2021-07-13 20:50:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:11,458 INFO L482 AbstractCegarLoop]: Abstraction has 3506 states and 11813 transitions. [2021-07-13 20:50:11,458 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) [2021-07-13 20:50:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 11813 transitions. [2021-07-13 20:50:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:11,468 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:11,468 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:11,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 20:50:11,468 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:11,469 INFO L82 PathProgramCache]: Analyzing trace with hash 176755628, now seen corresponding path program 4 times [2021-07-13 20:50:11,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:11,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894356729] [2021-07-13 20:50:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:11,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:11,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894356729] [2021-07-13 20:50:11,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894356729] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:11,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:11,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:50:11,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983075188] [2021-07-13 20:50:11,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:50:11,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:50:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:50:11,772 INFO L87 Difference]: Start difference. First operand 3506 states and 11813 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) [2021-07-13 20:50:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:15,437 INFO L93 Difference]: Finished difference Result 8000 states and 27131 transitions. [2021-07-13 20:50:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-07-13 20:50:15,438 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 [2021-07-13 20:50:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:15,466 INFO L225 Difference]: With dead ends: 8000 [2021-07-13 20:50:15,466 INFO L226 Difference]: Without dead ends: 7957 [2021-07-13 20:50:15,468 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 2082.3ms TimeCoverageRelationStatistics Valid=558, Invalid=6084, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 20:50:15,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2021-07-13 20:50:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 3706. [2021-07-13 20:50:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3748987854251014) internal successors, (12504), 3705 states have internal predecessors, (12504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12504 transitions. [2021-07-13 20:50:15,626 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12504 transitions. Word has length 39 [2021-07-13 20:50:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:15,627 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12504 transitions. [2021-07-13 20:50:15,627 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) [2021-07-13 20:50:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12504 transitions. [2021-07-13 20:50:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:15,638 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:15,638 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:15,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 20:50:15,639 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:15,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1603842674, now seen corresponding path program 5 times [2021-07-13 20:50:15,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:15,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562687] [2021-07-13 20:50:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:16,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:16,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562687] [2021-07-13 20:50:16,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562687] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:16,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:16,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:50:16,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185899730] [2021-07-13 20:50:16,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:50:16,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:16,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:50:16,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:50:16,028 INFO L87 Difference]: Start difference. First operand 3706 states and 12504 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) [2021-07-13 20:50:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:19,415 INFO L93 Difference]: Finished difference Result 8573 states and 29254 transitions. [2021-07-13 20:50:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:50:19,415 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 [2021-07-13 20:50:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:19,449 INFO L225 Difference]: With dead ends: 8573 [2021-07-13 20:50:19,449 INFO L226 Difference]: Without dead ends: 8509 [2021-07-13 20:50:19,451 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2181 ImplicationChecksByTransitivity, 1996.2ms TimeCoverageRelationStatistics Valid=568, Invalid=6238, Unknown=0, NotChecked=0, Total=6806 [2021-07-13 20:50:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8509 states. [2021-07-13 20:50:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8509 to 3688. [2021-07-13 20:50:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 3.375915378356387) internal successors, (12447), 3687 states have internal predecessors, (12447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 12447 transitions. [2021-07-13 20:50:19,621 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 12447 transitions. Word has length 39 [2021-07-13 20:50:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:19,622 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 12447 transitions. [2021-07-13 20:50:19,622 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) [2021-07-13 20:50:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 12447 transitions. [2021-07-13 20:50:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:19,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:19,631 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:19,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 20:50:19,631 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:19,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2012658290, now seen corresponding path program 6 times [2021-07-13 20:50:19,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:19,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612186121] [2021-07-13 20:50:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:19,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:19,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612186121] [2021-07-13 20:50:19,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612186121] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:19,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:19,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:50:19,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852526161] [2021-07-13 20:50:19,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:50:19,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:50:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:50:19,883 INFO L87 Difference]: Start difference. First operand 3688 states and 12447 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) [2021-07-13 20:50:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:23,545 INFO L93 Difference]: Finished difference Result 8145 states and 27755 transitions. [2021-07-13 20:50:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-13 20:50:23,546 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 [2021-07-13 20:50:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:23,576 INFO L225 Difference]: With dead ends: 8145 [2021-07-13 20:50:23,576 INFO L226 Difference]: Without dead ends: 8015 [2021-07-13 20:50:23,578 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 2071.9ms TimeCoverageRelationStatistics Valid=626, Invalid=7030, Unknown=0, NotChecked=0, Total=7656 [2021-07-13 20:50:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2021-07-13 20:50:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 3664. [2021-07-13 20:50:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.375102375102375) internal successors, (12363), 3663 states have internal predecessors, (12363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12363 transitions. [2021-07-13 20:50:23,736 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12363 transitions. Word has length 39 [2021-07-13 20:50:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:23,737 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12363 transitions. [2021-07-13 20:50:23,741 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) [2021-07-13 20:50:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12363 transitions. [2021-07-13 20:50:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:23,751 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:23,751 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:23,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 20:50:23,752 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:23,752 INFO L82 PathProgramCache]: Analyzing trace with hash 957753594, now seen corresponding path program 7 times [2021-07-13 20:50:23,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:23,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016176816] [2021-07-13 20:50:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:23,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:23,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016176816] [2021-07-13 20:50:23,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016176816] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:23,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:23,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:23,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542363185] [2021-07-13 20:50:23,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:23,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:23,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:23,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:23,990 INFO L87 Difference]: Start difference. First operand 3664 states and 12363 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) [2021-07-13 20:50:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:26,508 INFO L93 Difference]: Finished difference Result 6771 states and 22942 transitions. [2021-07-13 20:50:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 20:50:26,508 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 [2021-07-13 20:50:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:26,528 INFO L225 Difference]: With dead ends: 6771 [2021-07-13 20:50:26,529 INFO L226 Difference]: Without dead ends: 6704 [2021-07-13 20:50:26,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 1341.4ms TimeCoverageRelationStatistics Valid=371, Invalid=4051, Unknown=0, NotChecked=0, Total=4422 [2021-07-13 20:50:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2021-07-13 20:50:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 3680. [2021-07-13 20:50:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.371296547974993) internal successors, (12403), 3679 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12403 transitions. [2021-07-13 20:50:26,647 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12403 transitions. Word has length 39 [2021-07-13 20:50:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:26,647 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12403 transitions. [2021-07-13 20:50:26,647 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) [2021-07-13 20:50:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12403 transitions. [2021-07-13 20:50:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:26,656 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:26,656 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:26,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 20:50:26,657 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1894322408, now seen corresponding path program 8 times [2021-07-13 20:50:26,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:26,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967975163] [2021-07-13 20:50:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:26,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:26,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967975163] [2021-07-13 20:50:26,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967975163] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:26,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:26,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:26,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898433867] [2021-07-13 20:50:26,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:26,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:26,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:26,916 INFO L87 Difference]: Start difference. First operand 3680 states and 12403 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) [2021-07-13 20:50:30,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:30,390 INFO L93 Difference]: Finished difference Result 8010 states and 27138 transitions. [2021-07-13 20:50:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-13 20:50:30,391 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 [2021-07-13 20:50:30,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:30,412 INFO L225 Difference]: With dead ends: 8010 [2021-07-13 20:50:30,413 INFO L226 Difference]: Without dead ends: 7967 [2021-07-13 20:50:30,415 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2527 ImplicationChecksByTransitivity, 2024.2ms TimeCoverageRelationStatistics Valid=617, Invalid=7215, Unknown=0, NotChecked=0, Total=7832 [2021-07-13 20:50:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2021-07-13 20:50:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 3702. [2021-07-13 20:50:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.368819238043772) internal successors, (12468), 3701 states have internal predecessors, (12468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12468 transitions. [2021-07-13 20:50:30,546 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12468 transitions. Word has length 39 [2021-07-13 20:50:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:30,546 INFO L482 AbstractCegarLoop]: Abstraction has 3702 states and 12468 transitions. [2021-07-13 20:50:30,546 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) [2021-07-13 20:50:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12468 transitions. [2021-07-13 20:50:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:30,556 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:30,556 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:30,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 20:50:30,556 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash 620046586, now seen corresponding path program 9 times [2021-07-13 20:50:30,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:30,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441116874] [2021-07-13 20:50:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:30,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:30,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441116874] [2021-07-13 20:50:30,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441116874] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:30,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:30,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:30,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971846246] [2021-07-13 20:50:30,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:30,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:30,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:30,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:30,811 INFO L87 Difference]: Start difference. First operand 3702 states and 12468 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) [2021-07-13 20:50:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:34,416 INFO L93 Difference]: Finished difference Result 8583 states and 29261 transitions. [2021-07-13 20:50:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-13 20:50:34,417 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 [2021-07-13 20:50:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:34,436 INFO L225 Difference]: With dead ends: 8583 [2021-07-13 20:50:34,436 INFO L226 Difference]: Without dead ends: 8519 [2021-07-13 20:50:34,438 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 2075.9ms TimeCoverageRelationStatistics Valid=606, Invalid=7050, Unknown=0, NotChecked=0, Total=7656 [2021-07-13 20:50:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8519 states. [2021-07-13 20:50:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8519 to 3672. [2021-07-13 20:50:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3671 states have (on average 3.374284935984745) internal successors, (12387), 3671 states have internal predecessors, (12387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 12387 transitions. [2021-07-13 20:50:34,567 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 12387 transitions. Word has length 39 [2021-07-13 20:50:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:34,567 INFO L482 AbstractCegarLoop]: Abstraction has 3672 states and 12387 transitions. [2021-07-13 20:50:34,567 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) [2021-07-13 20:50:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 12387 transitions. [2021-07-13 20:50:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:34,576 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:34,576 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:34,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 20:50:34,577 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:34,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:34,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1142798612, now seen corresponding path program 10 times [2021-07-13 20:50:34,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:34,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246218052] [2021-07-13 20:50:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:34,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:34,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246218052] [2021-07-13 20:50:34,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246218052] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:34,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:34,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:34,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571461876] [2021-07-13 20:50:34,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:34,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:34,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:34,803 INFO L87 Difference]: Start difference. First operand 3672 states and 12387 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) [2021-07-13 20:50:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:36,198 INFO L93 Difference]: Finished difference Result 5369 states and 18355 transitions. [2021-07-13 20:50:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 20:50:36,201 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 [2021-07-13 20:50:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:36,213 INFO L225 Difference]: With dead ends: 5369 [2021-07-13 20:50:36,213 INFO L226 Difference]: Without dead ends: 5302 [2021-07-13 20:50:36,214 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 764.7ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 20:50:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2021-07-13 20:50:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3680. [2021-07-13 20:50:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.371296547974993) internal successors, (12403), 3679 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12403 transitions. [2021-07-13 20:50:36,315 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12403 transitions. Word has length 39 [2021-07-13 20:50:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:36,315 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12403 transitions. [2021-07-13 20:50:36,315 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) [2021-07-13 20:50:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12403 transitions. [2021-07-13 20:50:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:36,324 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:36,324 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:36,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 20:50:36,324 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:36,324 INFO L82 PathProgramCache]: Analyzing trace with hash 750849930, now seen corresponding path program 11 times [2021-07-13 20:50:36,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:36,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740564489] [2021-07-13 20:50:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:36,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:36,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740564489] [2021-07-13 20:50:36,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740564489] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:36,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:36,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:36,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082863741] [2021-07-13 20:50:36,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:36,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:36,553 INFO L87 Difference]: Start difference. First operand 3680 states and 12403 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) [2021-07-13 20:50:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:37,975 INFO L93 Difference]: Finished difference Result 5357 states and 18315 transitions. [2021-07-13 20:50:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-13 20:50:37,975 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 [2021-07-13 20:50:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:37,988 INFO L225 Difference]: With dead ends: 5357 [2021-07-13 20:50:37,988 INFO L226 Difference]: Without dead ends: 5294 [2021-07-13 20:50:37,989 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 767.9ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 20:50:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-07-13 20:50:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 3672. [2021-07-13 20:50:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3671 states have (on average 3.3731953146281666) internal successors, (12383), 3671 states have internal predecessors, (12383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 12383 transitions. [2021-07-13 20:50:38,105 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 12383 transitions. Word has length 39 [2021-07-13 20:50:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:38,106 INFO L482 AbstractCegarLoop]: Abstraction has 3672 states and 12383 transitions. [2021-07-13 20:50:38,106 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) [2021-07-13 20:50:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 12383 transitions. [2021-07-13 20:50:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:38,118 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:38,118 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:38,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 20:50:38,119 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:38,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:38,119 INFO L82 PathProgramCache]: Analyzing trace with hash 974207546, now seen corresponding path program 12 times [2021-07-13 20:50:38,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:38,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847012134] [2021-07-13 20:50:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:38,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:38,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847012134] [2021-07-13 20:50:38,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847012134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:38,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:38,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:38,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814915898] [2021-07-13 20:50:38,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:38,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:38,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:38,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:38,344 INFO L87 Difference]: Start difference. First operand 3672 states and 12383 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) [2021-07-13 20:50:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:40,467 INFO L93 Difference]: Finished difference Result 5886 states and 20058 transitions. [2021-07-13 20:50:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-13 20:50:40,467 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 [2021-07-13 20:50:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:40,483 INFO L225 Difference]: With dead ends: 5886 [2021-07-13 20:50:40,484 INFO L226 Difference]: Without dead ends: 5843 [2021-07-13 20:50:40,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1268.4ms TimeCoverageRelationStatistics Valid=372, Invalid=3788, Unknown=0, NotChecked=0, Total=4160 [2021-07-13 20:50:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-07-13 20:50:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 3680. [2021-07-13 20:50:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.371296547974993) internal successors, (12403), 3679 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12403 transitions. [2021-07-13 20:50:40,602 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12403 transitions. Word has length 39 [2021-07-13 20:50:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:40,602 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12403 transitions. [2021-07-13 20:50:40,602 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) [2021-07-13 20:50:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12403 transitions. [2021-07-13 20:50:40,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:40,612 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:40,612 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:40,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 20:50:40,612 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash -806390756, now seen corresponding path program 13 times [2021-07-13 20:50:40,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:40,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5020221] [2021-07-13 20:50:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:40,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:40,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5020221] [2021-07-13 20:50:40,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5020221] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:40,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:40,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:40,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130548223] [2021-07-13 20:50:40,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:40,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:40,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:40,864 INFO L87 Difference]: Start difference. First operand 3680 states and 12403 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) [2021-07-13 20:50:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:43,253 INFO L93 Difference]: Finished difference Result 6732 states and 22949 transitions. [2021-07-13 20:50:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-13 20:50:43,253 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 [2021-07-13 20:50:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:43,268 INFO L225 Difference]: With dead ends: 6732 [2021-07-13 20:50:43,269 INFO L226 Difference]: Without dead ends: 6680 [2021-07-13 20:50:43,270 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1418.7ms TimeCoverageRelationStatistics Valid=407, Invalid=4423, Unknown=0, NotChecked=0, Total=4830 [2021-07-13 20:50:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2021-07-13 20:50:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 3674. [2021-07-13 20:50:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3727198475360742) internal successors, (12388), 3673 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) [2021-07-13 20:50:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12388 transitions. [2021-07-13 20:50:43,380 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12388 transitions. Word has length 39 [2021-07-13 20:50:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:43,380 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12388 transitions. [2021-07-13 20:50:43,380 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) [2021-07-13 20:50:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12388 transitions. [2021-07-13 20:50:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:43,389 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:43,389 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:43,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 20:50:43,390 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:43,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:43,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1892691116, now seen corresponding path program 14 times [2021-07-13 20:50:43,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:43,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277802158] [2021-07-13 20:50:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:43,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:43,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277802158] [2021-07-13 20:50:43,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277802158] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:43,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:43,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:43,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382494327] [2021-07-13 20:50:43,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:43,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:43,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:43,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:43,623 INFO L87 Difference]: Start difference. First operand 3674 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) [2021-07-13 20:50:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:45,080 INFO L93 Difference]: Finished difference Result 5446 states and 18508 transitions. [2021-07-13 20:50:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 20:50:45,080 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 [2021-07-13 20:50:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:45,091 INFO L225 Difference]: With dead ends: 5446 [2021-07-13 20:50:45,091 INFO L226 Difference]: Without dead ends: 5391 [2021-07-13 20:50:45,092 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 812.7ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 20:50:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2021-07-13 20:50:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 3676. [2021-07-13 20:50:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.371700680272109) internal successors, (12391), 3675 states have internal predecessors, (12391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12391 transitions. [2021-07-13 20:50:45,176 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12391 transitions. Word has length 39 [2021-07-13 20:50:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:45,176 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12391 transitions. [2021-07-13 20:50:45,176 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) [2021-07-13 20:50:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12391 transitions. [2021-07-13 20:50:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:45,184 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:45,185 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:45,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 20:50:45,185 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:45,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1229623958, now seen corresponding path program 15 times [2021-07-13 20:50:45,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:45,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550648806] [2021-07-13 20:50:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:45,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:45,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550648806] [2021-07-13 20:50:45,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550648806] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:45,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:45,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:45,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696896257] [2021-07-13 20:50:45,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:45,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:45,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:45,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:45,395 INFO L87 Difference]: Start difference. First operand 3676 states and 12391 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) [2021-07-13 20:50:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:47,117 INFO L93 Difference]: Finished difference Result 6214 states and 21239 transitions. [2021-07-13 20:50:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 20:50:47,117 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 [2021-07-13 20:50:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:47,130 INFO L225 Difference]: With dead ends: 6214 [2021-07-13 20:50:47,130 INFO L226 Difference]: Without dead ends: 6150 [2021-07-13 20:50:47,131 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 929.4ms TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:50:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-07-13 20:50:47,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 3670. [2021-07-13 20:50:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.373671300081766) internal successors, (12378), 3669 states have internal predecessors, (12378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12378 transitions. [2021-07-13 20:50:47,223 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12378 transitions. Word has length 39 [2021-07-13 20:50:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:47,223 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12378 transitions. [2021-07-13 20:50:47,223 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) [2021-07-13 20:50:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12378 transitions. [2021-07-13 20:50:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:47,232 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:47,232 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:47,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 20:50:47,232 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1012424364, now seen corresponding path program 16 times [2021-07-13 20:50:47,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:47,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112966123] [2021-07-13 20:50:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:47,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:47,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112966123] [2021-07-13 20:50:47,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112966123] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:47,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:47,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:47,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576136767] [2021-07-13 20:50:47,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:47,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:47,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:47,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:47,441 INFO L87 Difference]: Start difference. First operand 3670 states and 12378 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) [2021-07-13 20:50:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:51,278 INFO L93 Difference]: Finished difference Result 8269 states and 28029 transitions. [2021-07-13 20:50:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-07-13 20:50:51,279 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 [2021-07-13 20:50:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:51,296 INFO L225 Difference]: With dead ends: 8269 [2021-07-13 20:50:51,296 INFO L226 Difference]: Without dead ends: 8132 [2021-07-13 20:50:51,297 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 2170.2ms TimeCoverageRelationStatistics Valid=681, Invalid=8249, Unknown=0, NotChecked=0, Total=8930 [2021-07-13 20:50:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-07-13 20:50:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 3674. [2021-07-13 20:50:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3727198475360742) internal successors, (12388), 3673 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) [2021-07-13 20:50:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12388 transitions. [2021-07-13 20:50:51,391 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12388 transitions. Word has length 39 [2021-07-13 20:50:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:51,391 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12388 transitions. [2021-07-13 20:50:51,391 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) [2021-07-13 20:50:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12388 transitions. [2021-07-13 20:50:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:51,398 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:51,398 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:51,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 20:50:51,399 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash -482466536, now seen corresponding path program 17 times [2021-07-13 20:50:51,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:51,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480789428] [2021-07-13 20:50:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:51,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:51,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480789428] [2021-07-13 20:50:51,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480789428] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:51,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:51,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:51,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379282515] [2021-07-13 20:50:51,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:51,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:51,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:51,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:51,606 INFO L87 Difference]: Start difference. First operand 3674 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) [2021-07-13 20:50:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:53,615 INFO L93 Difference]: Finished difference Result 5915 states and 20130 transitions. [2021-07-13 20:50:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-13 20:50:53,615 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 [2021-07-13 20:50:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:53,627 INFO L225 Difference]: With dead ends: 5915 [2021-07-13 20:50:53,627 INFO L226 Difference]: Without dead ends: 5851 [2021-07-13 20:50:53,628 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1201.1ms TimeCoverageRelationStatistics Valid=347, Invalid=3559, Unknown=0, NotChecked=0, Total=3906 [2021-07-13 20:50:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2021-07-13 20:50:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 3674. [2021-07-13 20:50:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3727198475360742) internal successors, (12388), 3673 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) [2021-07-13 20:50:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12388 transitions. [2021-07-13 20:50:53,708 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12388 transitions. Word has length 39 [2021-07-13 20:50:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:53,709 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12388 transitions. [2021-07-13 20:50:53,709 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) [2021-07-13 20:50:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12388 transitions. [2021-07-13 20:50:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:53,718 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:53,718 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:53,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 20:50:53,718 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:53,719 INFO L82 PathProgramCache]: Analyzing trace with hash 436017034, now seen corresponding path program 18 times [2021-07-13 20:50:53,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:53,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263670860] [2021-07-13 20:50:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:53,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:53,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263670860] [2021-07-13 20:50:53,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263670860] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:53,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:53,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:53,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771650557] [2021-07-13 20:50:53,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:53,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:53,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:53,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:53,916 INFO L87 Difference]: Start difference. First operand 3674 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) [2021-07-13 20:50:55,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:55,348 INFO L93 Difference]: Finished difference Result 5506 states and 18666 transitions. [2021-07-13 20:50:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 20:50:55,348 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 [2021-07-13 20:50:55,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:55,360 INFO L225 Difference]: With dead ends: 5506 [2021-07-13 20:50:55,360 INFO L226 Difference]: Without dead ends: 5451 [2021-07-13 20:50:55,360 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 759.7ms TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 20:50:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-07-13 20:50:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 3680. [2021-07-13 20:50:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.3707529219896712) internal successors, (12401), 3679 states have internal predecessors, (12401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12401 transitions. [2021-07-13 20:50:55,429 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12401 transitions. Word has length 39 [2021-07-13 20:50:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:55,430 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12401 transitions. [2021-07-13 20:50:55,430 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) [2021-07-13 20:50:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12401 transitions. [2021-07-13 20:50:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:55,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:55,436 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:55,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 20:50:55,436 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1608669256, now seen corresponding path program 19 times [2021-07-13 20:50:55,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:55,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441016968] [2021-07-13 20:50:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:55,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:55,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441016968] [2021-07-13 20:50:55,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441016968] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:55,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:55,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:55,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268232472] [2021-07-13 20:50:55,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:55,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:55,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:55,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:55,646 INFO L87 Difference]: Start difference. First operand 3680 states and 12401 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) [2021-07-13 20:50:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:57,357 INFO L93 Difference]: Finished difference Result 6334 states and 21534 transitions. [2021-07-13 20:50:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:50:57,357 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 [2021-07-13 20:50:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:57,370 INFO L225 Difference]: With dead ends: 6334 [2021-07-13 20:50:57,370 INFO L226 Difference]: Without dead ends: 6274 [2021-07-13 20:50:57,371 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 941.1ms TimeCoverageRelationStatistics Valid=268, Invalid=2702, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 20:50:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-07-13 20:50:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 3678. [2021-07-13 20:50:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 3.3712265433777535) internal successors, (12396), 3677 states have internal predecessors, (12396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12396 transitions. [2021-07-13 20:50:57,448 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12396 transitions. Word has length 39 [2021-07-13 20:50:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:57,448 INFO L482 AbstractCegarLoop]: Abstraction has 3678 states and 12396 transitions. [2021-07-13 20:50:57,448 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) [2021-07-13 20:50:57,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12396 transitions. [2021-07-13 20:50:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:57,453 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:57,454 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:57,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 20:50:57,454 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:57,454 INFO L82 PathProgramCache]: Analyzing trace with hash -470897286, now seen corresponding path program 20 times [2021-07-13 20:50:57,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:57,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206299331] [2021-07-13 20:50:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:57,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:57,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206299331] [2021-07-13 20:50:57,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206299331] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:57,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:57,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:50:57,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004073341] [2021-07-13 20:50:57,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:50:57,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:57,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:50:57,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:50:57,679 INFO L87 Difference]: Start difference. First operand 3678 states and 12396 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) [2021-07-13 20:50:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:50:59,237 INFO L93 Difference]: Finished difference Result 6245 states and 21321 transitions. [2021-07-13 20:50:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 20:50:59,238 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 [2021-07-13 20:50:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:50:59,251 INFO L225 Difference]: With dead ends: 6245 [2021-07-13 20:50:59,251 INFO L226 Difference]: Without dead ends: 6169 [2021-07-13 20:50:59,251 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 878.7ms TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 20:50:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2021-07-13 20:50:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 3686. [2021-07-13 20:50:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.368249660786974) internal successors, (12412), 3685 states have internal predecessors, (12412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:50:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12412 transitions. [2021-07-13 20:50:59,367 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12412 transitions. Word has length 39 [2021-07-13 20:50:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:50:59,367 INFO L482 AbstractCegarLoop]: Abstraction has 3686 states and 12412 transitions. [2021-07-13 20:50:59,367 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) [2021-07-13 20:50:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12412 transitions. [2021-07-13 20:50:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:50:59,373 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:50:59,373 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:50:59,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 20:50:59,373 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:50:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:50:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1488950898, now seen corresponding path program 21 times [2021-07-13 20:50:59,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:50:59,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865988114] [2021-07-13 20:50:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:50:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:50:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:50:59,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:50:59,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865988114] [2021-07-13 20:50:59,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865988114] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:50:59,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:50:59,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:50:59,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140274465] [2021-07-13 20:50:59,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:50:59,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:50:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:50:59,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:50:59,592 INFO L87 Difference]: Start difference. First operand 3686 states and 12412 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) [2021-07-13 20:51:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:01,314 INFO L93 Difference]: Finished difference Result 6227 states and 21267 transitions. [2021-07-13 20:51:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:51:01,314 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 [2021-07-13 20:51:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:01,326 INFO L225 Difference]: With dead ends: 6227 [2021-07-13 20:51:01,326 INFO L226 Difference]: Without dead ends: 6149 [2021-07-13 20:51:01,327 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 947.3ms TimeCoverageRelationStatistics Valid=259, Invalid=2603, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:51:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2021-07-13 20:51:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 3666. [2021-07-13 20:51:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3665 states have (on average 3.3735334242837656) internal successors, (12364), 3665 states have internal predecessors, (12364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 12364 transitions. [2021-07-13 20:51:01,400 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 12364 transitions. Word has length 39 [2021-07-13 20:51:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:01,400 INFO L482 AbstractCegarLoop]: Abstraction has 3666 states and 12364 transitions. [2021-07-13 20:51:01,401 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) [2021-07-13 20:51:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 12364 transitions. [2021-07-13 20:51:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:01,406 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:01,406 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:01,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 20:51:01,406 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1527620848, now seen corresponding path program 22 times [2021-07-13 20:51:01,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:01,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521313954] [2021-07-13 20:51:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:01,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:01,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521313954] [2021-07-13 20:51:01,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521313954] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:01,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:01,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:01,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897277015] [2021-07-13 20:51:01,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:01,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:01,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:01,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:01,601 INFO L87 Difference]: Start difference. First operand 3666 states and 12364 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) [2021-07-13 20:51:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:04,160 INFO L93 Difference]: Finished difference Result 6811 states and 23006 transitions. [2021-07-13 20:51:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 20:51:04,160 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 [2021-07-13 20:51:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:04,179 INFO L225 Difference]: With dead ends: 6811 [2021-07-13 20:51:04,179 INFO L226 Difference]: Without dead ends: 6744 [2021-07-13 20:51:04,181 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 1293.5ms TimeCoverageRelationStatistics Valid=354, Invalid=3806, Unknown=0, NotChecked=0, Total=4160 [2021-07-13 20:51:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6744 states. [2021-07-13 20:51:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6744 to 3744. [2021-07-13 20:51:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 3.3745658562650283) internal successors, (12631), 3743 states have internal predecessors, (12631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 12631 transitions. [2021-07-13 20:51:04,293 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 12631 transitions. Word has length 39 [2021-07-13 20:51:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:04,294 INFO L482 AbstractCegarLoop]: Abstraction has 3744 states and 12631 transitions. [2021-07-13 20:51:04,294 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) [2021-07-13 20:51:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 12631 transitions. [2021-07-13 20:51:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:04,304 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:04,304 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:04,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 20:51:04,304 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1324455154, now seen corresponding path program 23 times [2021-07-13 20:51:04,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:04,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496166800] [2021-07-13 20:51:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:04,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:04,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496166800] [2021-07-13 20:51:04,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496166800] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:04,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:04,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:04,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485082159] [2021-07-13 20:51:04,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:04,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:04,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:04,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:04,642 INFO L87 Difference]: Start difference. First operand 3744 states and 12631 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) [2021-07-13 20:51:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:07,962 INFO L93 Difference]: Finished difference Result 8158 states and 27612 transitions. [2021-07-13 20:51:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-07-13 20:51:07,962 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 [2021-07-13 20:51:07,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:07,980 INFO L225 Difference]: With dead ends: 8158 [2021-07-13 20:51:07,980 INFO L226 Difference]: Without dead ends: 8115 [2021-07-13 20:51:07,981 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 1924.2ms TimeCoverageRelationStatistics Valid=586, Invalid=6724, Unknown=0, NotChecked=0, Total=7310 [2021-07-13 20:51:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-07-13 20:51:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 3846. [2021-07-13 20:51:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 3.376332899869961) internal successors, (12982), 3845 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 12982 transitions. [2021-07-13 20:51:08,076 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 12982 transitions. Word has length 39 [2021-07-13 20:51:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:08,076 INFO L482 AbstractCegarLoop]: Abstraction has 3846 states and 12982 transitions. [2021-07-13 20:51:08,076 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) [2021-07-13 20:51:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 12982 transitions. [2021-07-13 20:51:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:08,082 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:08,082 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:08,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 20:51:08,083 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:08,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1189913840, now seen corresponding path program 24 times [2021-07-13 20:51:08,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:08,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947297643] [2021-07-13 20:51:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:08,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:08,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947297643] [2021-07-13 20:51:08,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947297643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:08,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:08,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:08,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240444476] [2021-07-13 20:51:08,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:08,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:08,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:08,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:08,288 INFO L87 Difference]: Start difference. First operand 3846 states and 12982 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) [2021-07-13 20:51:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:11,659 INFO L93 Difference]: Finished difference Result 8413 states and 28598 transitions. [2021-07-13 20:51:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 20:51:11,659 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 [2021-07-13 20:51:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:11,678 INFO L225 Difference]: With dead ends: 8413 [2021-07-13 20:51:11,678 INFO L226 Difference]: Without dead ends: 8349 [2021-07-13 20:51:11,679 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 1863.4ms TimeCoverageRelationStatistics Valid=585, Invalid=6725, Unknown=0, NotChecked=0, Total=7310 [2021-07-13 20:51:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2021-07-13 20:51:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 3816. [2021-07-13 20:51:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3815 states have (on average 3.381651376146789) internal successors, (12901), 3815 states have internal predecessors, (12901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 12901 transitions. [2021-07-13 20:51:11,767 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 12901 transitions. Word has length 39 [2021-07-13 20:51:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:11,768 INFO L482 AbstractCegarLoop]: Abstraction has 3816 states and 12901 transitions. [2021-07-13 20:51:11,768 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) [2021-07-13 20:51:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 12901 transitions. [2021-07-13 20:51:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:11,773 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:11,773 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:11,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 20:51:11,773 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:11,774 INFO L82 PathProgramCache]: Analyzing trace with hash -572931358, now seen corresponding path program 25 times [2021-07-13 20:51:11,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:11,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462559117] [2021-07-13 20:51:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:11,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:11,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462559117] [2021-07-13 20:51:11,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462559117] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:11,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:11,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:11,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696075366] [2021-07-13 20:51:11,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:11,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:11,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:11,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:11,979 INFO L87 Difference]: Start difference. First operand 3816 states and 12901 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) [2021-07-13 20:51:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:13,368 INFO L93 Difference]: Finished difference Result 5619 states and 19160 transitions. [2021-07-13 20:51:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-13 20:51:13,368 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 [2021-07-13 20:51:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:13,380 INFO L225 Difference]: With dead ends: 5619 [2021-07-13 20:51:13,380 INFO L226 Difference]: Without dead ends: 5552 [2021-07-13 20:51:13,380 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 693.3ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 20:51:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-07-13 20:51:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 3844. [2021-07-13 20:51:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3843 states have (on average 3.3778298204527712) internal successors, (12981), 3843 states have internal predecessors, (12981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 12981 transitions. [2021-07-13 20:51:13,458 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 12981 transitions. Word has length 39 [2021-07-13 20:51:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:13,458 INFO L482 AbstractCegarLoop]: Abstraction has 3844 states and 12981 transitions. [2021-07-13 20:51:13,458 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) [2021-07-13 20:51:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 12981 transitions. [2021-07-13 20:51:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:13,464 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:13,465 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:13,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 20:51:13,465 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1320717184, now seen corresponding path program 26 times [2021-07-13 20:51:13,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:13,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58068941] [2021-07-13 20:51:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:13,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:13,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58068941] [2021-07-13 20:51:13,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58068941] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:13,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:13,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:13,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565679762] [2021-07-13 20:51:13,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:13,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:13,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:13,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:13,687 INFO L87 Difference]: Start difference. First operand 3844 states and 12981 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) [2021-07-13 20:51:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:15,224 INFO L93 Difference]: Finished difference Result 5607 states and 19120 transitions. [2021-07-13 20:51:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 20:51:15,225 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 [2021-07-13 20:51:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:15,237 INFO L225 Difference]: With dead ends: 5607 [2021-07-13 20:51:15,237 INFO L226 Difference]: Without dead ends: 5544 [2021-07-13 20:51:15,238 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 795.3ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 20:51:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2021-07-13 20:51:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 3836. [2021-07-13 20:51:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 3835 states have (on average 3.3796610169491523) internal successors, (12961), 3835 states have internal predecessors, (12961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 12961 transitions. [2021-07-13 20:51:15,318 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 12961 transitions. Word has length 39 [2021-07-13 20:51:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:15,318 INFO L482 AbstractCegarLoop]: Abstraction has 3836 states and 12961 transitions. [2021-07-13 20:51:15,318 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) [2021-07-13 20:51:15,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 12961 transitions. [2021-07-13 20:51:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:15,325 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:15,325 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:15,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 20:51:15,325 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1544074800, now seen corresponding path program 27 times [2021-07-13 20:51:15,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:15,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268278935] [2021-07-13 20:51:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:15,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:15,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268278935] [2021-07-13 20:51:15,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268278935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:15,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:15,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:15,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644347709] [2021-07-13 20:51:15,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:15,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:15,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:15,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:15,558 INFO L87 Difference]: Start difference. First operand 3836 states and 12961 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) [2021-07-13 20:51:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:17,687 INFO L93 Difference]: Finished difference Result 6152 states and 20955 transitions. [2021-07-13 20:51:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 20:51:17,687 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 [2021-07-13 20:51:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:17,699 INFO L225 Difference]: With dead ends: 6152 [2021-07-13 20:51:17,699 INFO L226 Difference]: Without dead ends: 6109 [2021-07-13 20:51:17,700 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 1266.6ms TimeCoverageRelationStatistics Valid=367, Invalid=3793, Unknown=0, NotChecked=0, Total=4160 [2021-07-13 20:51:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6109 states. [2021-07-13 20:51:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6109 to 3864. [2021-07-13 20:51:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3863 states have (on average 3.3779446026404347) internal successors, (13049), 3863 states have internal predecessors, (13049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 13049 transitions. [2021-07-13 20:51:17,774 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 13049 transitions. Word has length 39 [2021-07-13 20:51:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:17,774 INFO L482 AbstractCegarLoop]: Abstraction has 3864 states and 13049 transitions. [2021-07-13 20:51:17,774 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) [2021-07-13 20:51:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 13049 transitions. [2021-07-13 20:51:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:17,779 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:17,779 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:17,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 20:51:17,779 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash -236523502, now seen corresponding path program 28 times [2021-07-13 20:51:17,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:17,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095092235] [2021-07-13 20:51:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:17,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:17,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095092235] [2021-07-13 20:51:17,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095092235] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:17,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:17,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:17,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817592539] [2021-07-13 20:51:17,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:17,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:17,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:17,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:17,979 INFO L87 Difference]: Start difference. First operand 3864 states and 13049 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) [2021-07-13 20:51:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:20,374 INFO L93 Difference]: Finished difference Result 6998 states and 23846 transitions. [2021-07-13 20:51:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-13 20:51:20,375 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 [2021-07-13 20:51:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:20,389 INFO L225 Difference]: With dead ends: 6998 [2021-07-13 20:51:20,389 INFO L226 Difference]: Without dead ends: 6946 [2021-07-13 20:51:20,389 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1370.1ms TimeCoverageRelationStatistics Valid=402, Invalid=4428, Unknown=0, NotChecked=0, Total=4830 [2021-07-13 20:51:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-07-13 20:51:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 3852. [2021-07-13 20:51:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3851 states have (on average 3.379641651519086) internal successors, (13015), 3851 states have internal predecessors, (13015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 13015 transitions. [2021-07-13 20:51:20,469 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 13015 transitions. Word has length 39 [2021-07-13 20:51:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:20,469 INFO L482 AbstractCegarLoop]: Abstraction has 3852 states and 13015 transitions. [2021-07-13 20:51:20,469 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) [2021-07-13 20:51:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 13015 transitions. [2021-07-13 20:51:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:20,476 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:20,476 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:20,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 20:51:20,476 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1832408926, now seen corresponding path program 29 times [2021-07-13 20:51:20,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:20,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615197779] [2021-07-13 20:51:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:20,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:20,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615197779] [2021-07-13 20:51:20,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615197779] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:20,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:20,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:20,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032674441] [2021-07-13 20:51:20,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:20,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:20,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:20,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:20,695 INFO L87 Difference]: Start difference. First operand 3852 states and 13015 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) [2021-07-13 20:51:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:22,304 INFO L93 Difference]: Finished difference Result 5751 states and 19448 transitions. [2021-07-13 20:51:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 20:51:22,304 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 [2021-07-13 20:51:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:22,317 INFO L225 Difference]: With dead ends: 5751 [2021-07-13 20:51:22,317 INFO L226 Difference]: Without dead ends: 5696 [2021-07-13 20:51:22,317 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 864.5ms TimeCoverageRelationStatistics Valid=248, Invalid=2302, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 20:51:22,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2021-07-13 20:51:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 3854. [2021-07-13 20:51:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.3786659745652736) internal successors, (13018), 3853 states have internal predecessors, (13018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13018 transitions. [2021-07-13 20:51:22,393 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13018 transitions. Word has length 39 [2021-07-13 20:51:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:22,393 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13018 transitions. [2021-07-13 20:51:22,393 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) [2021-07-13 20:51:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13018 transitions. [2021-07-13 20:51:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:22,401 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:22,401 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:22,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 20:51:22,402 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -659756704, now seen corresponding path program 30 times [2021-07-13 20:51:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:22,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414186799] [2021-07-13 20:51:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:22,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:22,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414186799] [2021-07-13 20:51:22,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414186799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:22,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:22,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:22,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360146799] [2021-07-13 20:51:22,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:22,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:22,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:22,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:22,613 INFO L87 Difference]: Start difference. First operand 3854 states and 13018 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) [2021-07-13 20:51:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:24,361 INFO L93 Difference]: Finished difference Result 6544 states and 22225 transitions. [2021-07-13 20:51:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 20:51:24,361 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 [2021-07-13 20:51:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:24,375 INFO L225 Difference]: With dead ends: 6544 [2021-07-13 20:51:24,375 INFO L226 Difference]: Without dead ends: 6498 [2021-07-13 20:51:24,375 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 889.8ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:51:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-07-13 20:51:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 3858. [2021-07-13 20:51:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3772361939331086) internal successors, (13026), 3857 states have internal predecessors, (13026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 13026 transitions. [2021-07-13 20:51:24,460 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 13026 transitions. Word has length 39 [2021-07-13 20:51:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:24,460 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 13026 transitions. [2021-07-13 20:51:24,460 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) [2021-07-13 20:51:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 13026 transitions. [2021-07-13 20:51:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:24,467 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:24,467 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:24,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 20:51:24,467 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash -907222866, now seen corresponding path program 31 times [2021-07-13 20:51:24,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:24,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995081732] [2021-07-13 20:51:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:24,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:24,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995081732] [2021-07-13 20:51:24,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995081732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:24,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:24,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:24,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672316949] [2021-07-13 20:51:24,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:24,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:24,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:24,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:24,689 INFO L87 Difference]: Start difference. First operand 3858 states and 13026 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) [2021-07-13 20:51:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:26,321 INFO L93 Difference]: Finished difference Result 5686 states and 19337 transitions. [2021-07-13 20:51:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 20:51:26,322 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 [2021-07-13 20:51:26,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:26,333 INFO L225 Difference]: With dead ends: 5686 [2021-07-13 20:51:26,333 INFO L226 Difference]: Without dead ends: 5637 [2021-07-13 20:51:26,333 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 922.2ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 20:51:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-07-13 20:51:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 3848. [2021-07-13 20:51:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.3805562776189237) internal successors, (13005), 3847 states have internal predecessors, (13005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 13005 transitions. [2021-07-13 20:51:26,415 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 13005 transitions. Word has length 39 [2021-07-13 20:51:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:26,415 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 13005 transitions. [2021-07-13 20:51:26,415 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) [2021-07-13 20:51:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 13005 transitions. [2021-07-13 20:51:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:26,420 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:26,420 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:26,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 20:51:26,421 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:26,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:26,421 INFO L82 PathProgramCache]: Analyzing trace with hash 765825230, now seen corresponding path program 32 times [2021-07-13 20:51:26,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:26,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874375946] [2021-07-13 20:51:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:26,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:26,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874375946] [2021-07-13 20:51:26,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874375946] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:26,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:26,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:26,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471689985] [2021-07-13 20:51:26,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:26,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:26,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:26,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:26,623 INFO L87 Difference]: Start difference. First operand 3848 states and 13005 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) [2021-07-13 20:51:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:27,998 INFO L93 Difference]: Finished difference Result 5607 states and 19154 transitions. [2021-07-13 20:51:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 20:51:27,998 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 [2021-07-13 20:51:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:28,010 INFO L225 Difference]: With dead ends: 5607 [2021-07-13 20:51:28,010 INFO L226 Difference]: Without dead ends: 5540 [2021-07-13 20:51:28,010 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 633.0ms TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 20:51:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2021-07-13 20:51:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 3888. [2021-07-13 20:51:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 3.373552868536146) internal successors, (13113), 3887 states have internal predecessors, (13113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 13113 transitions. [2021-07-13 20:51:28,079 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 13113 transitions. Word has length 39 [2021-07-13 20:51:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:28,079 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 13113 transitions. [2021-07-13 20:51:28,079 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) [2021-07-13 20:51:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 13113 transitions. [2021-07-13 20:51:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:28,085 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:28,085 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:28,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 20:51:28,085 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1635493524, now seen corresponding path program 33 times [2021-07-13 20:51:28,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:28,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525188409] [2021-07-13 20:51:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:28,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:28,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525188409] [2021-07-13 20:51:28,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525188409] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:28,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:28,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:28,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932174739] [2021-07-13 20:51:28,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:28,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:28,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:28,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:28,286 INFO L87 Difference]: Start difference. First operand 3888 states and 13113 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) [2021-07-13 20:51:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:29,658 INFO L93 Difference]: Finished difference Result 5595 states and 19114 transitions. [2021-07-13 20:51:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 20:51:29,659 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 [2021-07-13 20:51:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:29,671 INFO L225 Difference]: With dead ends: 5595 [2021-07-13 20:51:29,672 INFO L226 Difference]: Without dead ends: 5532 [2021-07-13 20:51:29,672 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 657.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 20:51:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-07-13 20:51:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 3880. [2021-07-13 20:51:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3879 states have (on average 3.3743232791956688) internal successors, (13089), 3879 states have internal predecessors, (13089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 13089 transitions. [2021-07-13 20:51:29,746 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 13089 transitions. Word has length 39 [2021-07-13 20:51:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:29,746 INFO L482 AbstractCegarLoop]: Abstraction has 3880 states and 13089 transitions. [2021-07-13 20:51:29,747 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) [2021-07-13 20:51:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 13089 transitions. [2021-07-13 20:51:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:29,752 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:29,752 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:29,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 20:51:29,752 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:29,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1570860018, now seen corresponding path program 34 times [2021-07-13 20:51:29,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:29,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066148039] [2021-07-13 20:51:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:29,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:29,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066148039] [2021-07-13 20:51:29,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066148039] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:29,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:29,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:29,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579726693] [2021-07-13 20:51:29,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:29,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:29,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:29,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:29,974 INFO L87 Difference]: Start difference. First operand 3880 states and 13089 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) [2021-07-13 20:51:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:31,367 INFO L93 Difference]: Finished difference Result 5619 states and 19174 transitions. [2021-07-13 20:51:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 20:51:31,368 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 [2021-07-13 20:51:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:31,380 INFO L225 Difference]: With dead ends: 5619 [2021-07-13 20:51:31,380 INFO L226 Difference]: Without dead ends: 5496 [2021-07-13 20:51:31,381 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 674.3ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 20:51:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-07-13 20:51:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 3848. [2021-07-13 20:51:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.376397192617624) internal successors, (12989), 3847 states have internal predecessors, (12989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12989 transitions. [2021-07-13 20:51:31,477 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12989 transitions. Word has length 39 [2021-07-13 20:51:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:31,477 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12989 transitions. [2021-07-13 20:51:31,477 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) [2021-07-13 20:51:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12989 transitions. [2021-07-13 20:51:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:31,484 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:31,484 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:31,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 20:51:31,485 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:31,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:31,485 INFO L82 PathProgramCache]: Analyzing trace with hash -747253810, now seen corresponding path program 35 times [2021-07-13 20:51:31,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:31,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032022290] [2021-07-13 20:51:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:31,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:31,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032022290] [2021-07-13 20:51:31,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032022290] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:31,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:31,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:31,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780286225] [2021-07-13 20:51:31,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:31,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:31,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:31,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:31,675 INFO L87 Difference]: Start difference. First operand 3848 states and 12989 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) [2021-07-13 20:51:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:33,740 INFO L93 Difference]: Finished difference Result 6258 states and 21345 transitions. [2021-07-13 20:51:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-13 20:51:33,749 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 [2021-07-13 20:51:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:33,767 INFO L225 Difference]: With dead ends: 6258 [2021-07-13 20:51:33,768 INFO L226 Difference]: Without dead ends: 6215 [2021-07-13 20:51:33,768 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 1177.0ms TimeCoverageRelationStatistics Valid=354, Invalid=3552, Unknown=0, NotChecked=0, Total=3906 [2021-07-13 20:51:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2021-07-13 20:51:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 3862. [2021-07-13 20:51:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.374773374773375) internal successors, (13030), 3861 states have internal predecessors, (13030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13030 transitions. [2021-07-13 20:51:33,856 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13030 transitions. Word has length 39 [2021-07-13 20:51:33,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:33,856 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13030 transitions. [2021-07-13 20:51:33,856 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) [2021-07-13 20:51:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13030 transitions. [2021-07-13 20:51:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:33,862 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:33,862 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:33,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 20:51:33,862 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:33,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1767115184, now seen corresponding path program 36 times [2021-07-13 20:51:33,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:33,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782056765] [2021-07-13 20:51:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:34,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:34,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782056765] [2021-07-13 20:51:34,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782056765] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:34,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:34,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:34,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731349535] [2021-07-13 20:51:34,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:34,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:34,072 INFO L87 Difference]: Start difference. First operand 3862 states and 13030 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) [2021-07-13 20:51:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:36,470 INFO L93 Difference]: Finished difference Result 7119 states and 24275 transitions. [2021-07-13 20:51:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-13 20:51:36,470 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 [2021-07-13 20:51:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:36,484 INFO L225 Difference]: With dead ends: 7119 [2021-07-13 20:51:36,485 INFO L226 Difference]: Without dead ends: 7067 [2021-07-13 20:51:36,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 1375.0ms TimeCoverageRelationStatistics Valid=396, Invalid=4296, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 20:51:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2021-07-13 20:51:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 3854. [2021-07-13 20:51:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.3765896703867115) internal successors, (13010), 3853 states have internal predecessors, (13010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13010 transitions. [2021-07-13 20:51:36,555 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13010 transitions. Word has length 39 [2021-07-13 20:51:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:36,555 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13010 transitions. [2021-07-13 20:51:36,555 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) [2021-07-13 20:51:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13010 transitions. [2021-07-13 20:51:36,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:36,560 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:36,560 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:36,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 20:51:36,560 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:36,560 INFO L82 PathProgramCache]: Analyzing trace with hash 171229760, now seen corresponding path program 37 times [2021-07-13 20:51:36,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:36,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621430984] [2021-07-13 20:51:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:36,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:36,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621430984] [2021-07-13 20:51:36,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621430984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:36,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:36,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:36,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919926200] [2021-07-13 20:51:36,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:36,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:36,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:36,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:36,770 INFO L87 Difference]: Start difference. First operand 3854 states and 13010 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) [2021-07-13 20:51:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:38,427 INFO L93 Difference]: Finished difference Result 5789 states and 19585 transitions. [2021-07-13 20:51:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 20:51:38,427 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 [2021-07-13 20:51:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:38,439 INFO L225 Difference]: With dead ends: 5789 [2021-07-13 20:51:38,439 INFO L226 Difference]: Without dead ends: 5734 [2021-07-13 20:51:38,440 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 847.2ms TimeCoverageRelationStatistics Valid=235, Invalid=2117, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 20:51:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-07-13 20:51:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 3862. [2021-07-13 20:51:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.375809375809376) internal successors, (13034), 3861 states have internal predecessors, (13034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13034 transitions. [2021-07-13 20:51:38,509 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13034 transitions. Word has length 39 [2021-07-13 20:51:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:38,509 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13034 transitions. [2021-07-13 20:51:38,509 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) [2021-07-13 20:51:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13034 transitions. [2021-07-13 20:51:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:38,515 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:38,515 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:38,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 20:51:38,515 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:38,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:38,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1343881982, now seen corresponding path program 38 times [2021-07-13 20:51:38,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:38,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080319028] [2021-07-13 20:51:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:38,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:38,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080319028] [2021-07-13 20:51:38,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080319028] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:38,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:38,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:38,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497423968] [2021-07-13 20:51:38,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:38,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:38,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:38,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:38,730 INFO L87 Difference]: Start difference. First operand 3862 states and 13034 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) [2021-07-13 20:51:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:40,463 INFO L93 Difference]: Finished difference Result 6650 states and 22519 transitions. [2021-07-13 20:51:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:51:40,463 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 [2021-07-13 20:51:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:40,477 INFO L225 Difference]: With dead ends: 6650 [2021-07-13 20:51:40,477 INFO L226 Difference]: Without dead ends: 6590 [2021-07-13 20:51:40,477 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 913.8ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:51:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-07-13 20:51:40,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 3860. [2021-07-13 20:51:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 3859 states have (on average 3.3762632806426534) internal successors, (13029), 3859 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 13029 transitions. [2021-07-13 20:51:40,551 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 13029 transitions. Word has length 39 [2021-07-13 20:51:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:40,551 INFO L482 AbstractCegarLoop]: Abstraction has 3860 states and 13029 transitions. [2021-07-13 20:51:40,551 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) [2021-07-13 20:51:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 13029 transitions. [2021-07-13 20:51:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:40,557 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:40,557 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:40,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 20:51:40,557 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash -533521620, now seen corresponding path program 39 times [2021-07-13 20:51:40,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:40,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272787933] [2021-07-13 20:51:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:40,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:40,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272787933] [2021-07-13 20:51:40,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272787933] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:40,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:40,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:40,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231741400] [2021-07-13 20:51:40,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:40,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:40,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:40,763 INFO L87 Difference]: Start difference. First operand 3860 states and 13029 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) [2021-07-13 20:51:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:42,232 INFO L93 Difference]: Finished difference Result 5722 states and 19443 transitions. [2021-07-13 20:51:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 20:51:42,232 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 [2021-07-13 20:51:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:42,244 INFO L225 Difference]: With dead ends: 5722 [2021-07-13 20:51:42,244 INFO L226 Difference]: Without dead ends: 5631 [2021-07-13 20:51:42,244 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 752.4ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 20:51:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-07-13 20:51:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3860. [2021-07-13 20:51:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 3859 states have (on average 3.374708473697849) internal successors, (13023), 3859 states have internal predecessors, (13023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 13023 transitions. [2021-07-13 20:51:42,318 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 13023 transitions. Word has length 39 [2021-07-13 20:51:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:42,318 INFO L482 AbstractCegarLoop]: Abstraction has 3860 states and 13023 transitions. [2021-07-13 20:51:42,318 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) [2021-07-13 20:51:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 13023 transitions. [2021-07-13 20:51:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:42,324 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:42,324 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:42,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 20:51:42,324 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2036003826, now seen corresponding path program 40 times [2021-07-13 20:51:42,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:42,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174430496] [2021-07-13 20:51:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:42,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:42,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174430496] [2021-07-13 20:51:42,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174430496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:42,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:42,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:42,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774527018] [2021-07-13 20:51:42,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:42,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:42,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:42,515 INFO L87 Difference]: Start difference. First operand 3860 states and 13023 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) [2021-07-13 20:51:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:44,217 INFO L93 Difference]: Finished difference Result 6494 states and 22159 transitions. [2021-07-13 20:51:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:51:44,218 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 [2021-07-13 20:51:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:44,233 INFO L225 Difference]: With dead ends: 6494 [2021-07-13 20:51:44,233 INFO L226 Difference]: Without dead ends: 6378 [2021-07-13 20:51:44,234 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 865.5ms TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 20:51:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2021-07-13 20:51:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 3838. [2021-07-13 20:51:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 3.377638780297107) internal successors, (12960), 3837 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 12960 transitions. [2021-07-13 20:51:44,314 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 12960 transitions. Word has length 39 [2021-07-13 20:51:44,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:44,314 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 12960 transitions. [2021-07-13 20:51:44,314 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) [2021-07-13 20:51:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 12960 transitions. [2021-07-13 20:51:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:44,320 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:44,320 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:44,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 20:51:44,320 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1299285810, now seen corresponding path program 41 times [2021-07-13 20:51:44,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:44,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624168693] [2021-07-13 20:51:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:44,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:44,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624168693] [2021-07-13 20:51:44,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624168693] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:44,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:44,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:44,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389445348] [2021-07-13 20:51:44,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:44,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:44,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:44,528 INFO L87 Difference]: Start difference. First operand 3838 states and 12960 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) [2021-07-13 20:51:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:48,153 INFO L93 Difference]: Finished difference Result 8378 states and 28437 transitions. [2021-07-13 20:51:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-07-13 20:51:48,153 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 [2021-07-13 20:51:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:48,171 INFO L225 Difference]: With dead ends: 8378 [2021-07-13 20:51:48,171 INFO L226 Difference]: Without dead ends: 8272 [2021-07-13 20:51:48,172 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 1996.6ms TimeCoverageRelationStatistics Valid=650, Invalid=7722, Unknown=0, NotChecked=0, Total=8372 [2021-07-13 20:51:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2021-07-13 20:51:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 3854. [2021-07-13 20:51:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.377108746431352) internal successors, (13012), 3853 states have internal predecessors, (13012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13012 transitions. [2021-07-13 20:51:48,256 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13012 transitions. Word has length 39 [2021-07-13 20:51:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:48,256 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13012 transitions. [2021-07-13 20:51:48,257 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) [2021-07-13 20:51:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13012 transitions. [2021-07-13 20:51:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:48,263 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:48,263 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:48,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 20:51:48,263 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:48,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:48,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1500790586, now seen corresponding path program 42 times [2021-07-13 20:51:48,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:48,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621655472] [2021-07-13 20:51:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:48,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:48,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621655472] [2021-07-13 20:51:48,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621655472] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:48,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:48,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:48,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129589823] [2021-07-13 20:51:48,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:48,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:48,478 INFO L87 Difference]: Start difference. First operand 3854 states and 13012 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) [2021-07-13 20:51:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:50,381 INFO L93 Difference]: Finished difference Result 6055 states and 20602 transitions. [2021-07-13 20:51:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-13 20:51:50,381 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 [2021-07-13 20:51:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:50,394 INFO L225 Difference]: With dead ends: 6055 [2021-07-13 20:51:50,394 INFO L226 Difference]: Without dead ends: 5991 [2021-07-13 20:51:50,395 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 1157.3ms TimeCoverageRelationStatistics Valid=334, Invalid=3448, Unknown=0, NotChecked=0, Total=3782 [2021-07-13 20:51:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2021-07-13 20:51:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 3850. [2021-07-13 20:51:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 3.3780202650038973) internal successors, (13002), 3849 states have internal predecessors, (13002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 13002 transitions. [2021-07-13 20:51:50,470 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 13002 transitions. Word has length 39 [2021-07-13 20:51:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:50,471 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 13002 transitions. [2021-07-13 20:51:50,471 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) [2021-07-13 20:51:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 13002 transitions. [2021-07-13 20:51:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:50,476 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:50,476 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:50,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 20:51:50,477 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1875693140, now seen corresponding path program 43 times [2021-07-13 20:51:50,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:50,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480912379] [2021-07-13 20:51:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:50,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:50,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480912379] [2021-07-13 20:51:50,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480912379] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:50,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:50,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:50,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053962249] [2021-07-13 20:51:50,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:50,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:50,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:50,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:50,728 INFO L87 Difference]: Start difference. First operand 3850 states and 13002 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) [2021-07-13 20:51:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:52,064 INFO L93 Difference]: Finished difference Result 5612 states and 19021 transitions. [2021-07-13 20:51:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 20:51:52,064 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 [2021-07-13 20:51:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:52,077 INFO L225 Difference]: With dead ends: 5612 [2021-07-13 20:51:52,078 INFO L226 Difference]: Without dead ends: 5569 [2021-07-13 20:51:52,078 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 759.9ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 20:51:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-07-13 20:51:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3872. [2021-07-13 20:51:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3871 states have (on average 3.375613536553862) internal successors, (13067), 3871 states have internal predecessors, (13067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13067 transitions. [2021-07-13 20:51:52,150 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13067 transitions. Word has length 39 [2021-07-13 20:51:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:52,150 INFO L482 AbstractCegarLoop]: Abstraction has 3872 states and 13067 transitions. [2021-07-13 20:51:52,150 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) [2021-07-13 20:51:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13067 transitions. [2021-07-13 20:51:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:52,156 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:52,156 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:52,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 20:51:52,156 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:52,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1855544406, now seen corresponding path program 44 times [2021-07-13 20:51:52,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:52,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826438584] [2021-07-13 20:51:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:52,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:52,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826438584] [2021-07-13 20:51:52,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826438584] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:52,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:52,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:52,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417443616] [2021-07-13 20:51:52,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:52,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:52,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:52,381 INFO L87 Difference]: Start difference. First operand 3872 states and 13067 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) [2021-07-13 20:51:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:53,801 INFO L93 Difference]: Finished difference Result 5591 states and 18991 transitions. [2021-07-13 20:51:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 20:51:53,801 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 [2021-07-13 20:51:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:53,815 INFO L225 Difference]: With dead ends: 5591 [2021-07-13 20:51:53,815 INFO L226 Difference]: Without dead ends: 5548 [2021-07-13 20:51:53,816 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 808.3ms TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 20:51:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-07-13 20:51:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 3868. [2021-07-13 20:51:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3765192655805536) internal successors, (13057), 3867 states have internal predecessors, (13057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13057 transitions. [2021-07-13 20:51:53,887 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13057 transitions. Word has length 39 [2021-07-13 20:51:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:53,887 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13057 transitions. [2021-07-13 20:51:53,887 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) [2021-07-13 20:51:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13057 transitions. [2021-07-13 20:51:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:53,892 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:53,892 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:53,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 20:51:53,893 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash -703040918, now seen corresponding path program 45 times [2021-07-13 20:51:53,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:53,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701793880] [2021-07-13 20:51:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:54,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:54,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701793880] [2021-07-13 20:51:54,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701793880] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:54,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:54,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399021270] [2021-07-13 20:51:54,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:54,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:54,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:54,150 INFO L87 Difference]: Start difference. First operand 3868 states and 13057 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) [2021-07-13 20:51:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:55,857 INFO L93 Difference]: Finished difference Result 6448 states and 21909 transitions. [2021-07-13 20:51:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:51:55,858 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 [2021-07-13 20:51:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:55,873 INFO L225 Difference]: With dead ends: 6448 [2021-07-13 20:51:55,873 INFO L226 Difference]: Without dead ends: 6388 [2021-07-13 20:51:55,874 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 975.1ms TimeCoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:51:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2021-07-13 20:51:55,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 3866. [2021-07-13 20:51:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 3865 states have (on average 3.376972833117723) internal successors, (13052), 3865 states have internal predecessors, (13052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 13052 transitions. [2021-07-13 20:51:55,972 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 13052 transitions. Word has length 39 [2021-07-13 20:51:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:55,972 INFO L482 AbstractCegarLoop]: Abstraction has 3866 states and 13052 transitions. [2021-07-13 20:51:55,972 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) [2021-07-13 20:51:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 13052 transitions. [2021-07-13 20:51:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:55,977 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:55,977 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:55,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 20:51:55,978 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:55,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1512359836, now seen corresponding path program 46 times [2021-07-13 20:51:55,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:55,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388069696] [2021-07-13 20:51:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:56,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:56,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388069696] [2021-07-13 20:51:56,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388069696] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:56,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:56,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:51:56,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886304931] [2021-07-13 20:51:56,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:51:56,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:56,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:51:56,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:51:56,169 INFO L87 Difference]: Start difference. First operand 3866 states and 13052 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) [2021-07-13 20:51:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:57,601 INFO L93 Difference]: Finished difference Result 6416 states and 21849 transitions. [2021-07-13 20:51:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 20:51:57,602 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 [2021-07-13 20:51:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:57,616 INFO L225 Difference]: With dead ends: 6416 [2021-07-13 20:51:57,617 INFO L226 Difference]: Without dead ends: 6340 [2021-07-13 20:51:57,617 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 746.4ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 20:51:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2021-07-13 20:51:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 3874. [2021-07-13 20:51:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 3.3741285824941905) internal successors, (13068), 3873 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 13068 transitions. [2021-07-13 20:51:57,717 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 13068 transitions. Word has length 39 [2021-07-13 20:51:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:57,717 INFO L482 AbstractCegarLoop]: Abstraction has 3874 states and 13068 transitions. [2021-07-13 20:51:57,718 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) [2021-07-13 20:51:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 13068 transitions. [2021-07-13 20:51:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:57,724 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:57,724 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:57,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 20:51:57,724 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:57,724 INFO L82 PathProgramCache]: Analyzing trace with hash 494306224, now seen corresponding path program 47 times [2021-07-13 20:51:57,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:57,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379843428] [2021-07-13 20:51:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:57,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:57,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379843428] [2021-07-13 20:51:57,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379843428] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:57,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:57,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:57,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869920281] [2021-07-13 20:51:57,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:57,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:57,925 INFO L87 Difference]: Start difference. First operand 3874 states and 13068 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) [2021-07-13 20:51:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:59,534 INFO L93 Difference]: Finished difference Result 6398 states and 21795 transitions. [2021-07-13 20:51:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:51:59,534 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 [2021-07-13 20:51:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:59,548 INFO L225 Difference]: With dead ends: 6398 [2021-07-13 20:51:59,548 INFO L226 Difference]: Without dead ends: 6328 [2021-07-13 20:51:59,548 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 858.2ms TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 20:51:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-07-13 20:51:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 3862. [2021-07-13 20:51:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.3773633773633773) internal successors, (13040), 3861 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13040 transitions. [2021-07-13 20:51:59,617 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13040 transitions. Word has length 39 [2021-07-13 20:51:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:59,617 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13040 transitions. [2021-07-13 20:51:59,617 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) [2021-07-13 20:51:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13040 transitions. [2021-07-13 20:51:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:51:59,622 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:59,622 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:59,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 20:51:59,623 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:59,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1340489904, now seen corresponding path program 48 times [2021-07-13 20:51:59,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:59,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322555254] [2021-07-13 20:51:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:59,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:59,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322555254] [2021-07-13 20:51:59,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322555254] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:59,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:59,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:51:59,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809767208] [2021-07-13 20:51:59,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:51:59,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:59,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:51:59,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:51:59,827 INFO L87 Difference]: Start difference. First operand 3862 states and 13040 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) [2021-07-13 20:52:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:01,768 INFO L93 Difference]: Finished difference Result 6160 states and 21004 transitions. [2021-07-13 20:52:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-13 20:52:01,769 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 [2021-07-13 20:52:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:01,782 INFO L225 Difference]: With dead ends: 6160 [2021-07-13 20:52:01,783 INFO L226 Difference]: Without dead ends: 6117 [2021-07-13 20:52:01,783 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1152.8ms TimeCoverageRelationStatistics Valid=344, Invalid=3438, Unknown=0, NotChecked=0, Total=3782 [2021-07-13 20:52:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2021-07-13 20:52:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 3876. [2021-07-13 20:52:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 3875 states have (on average 3.375741935483871) internal successors, (13081), 3875 states have internal predecessors, (13081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 13081 transitions. [2021-07-13 20:52:01,867 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 13081 transitions. Word has length 39 [2021-07-13 20:52:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:01,868 INFO L482 AbstractCegarLoop]: Abstraction has 3876 states and 13081 transitions. [2021-07-13 20:52:01,868 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) [2021-07-13 20:52:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 13081 transitions. [2021-07-13 20:52:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:01,874 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:01,874 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:01,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-13 20:52:01,874 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:01,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -440108398, now seen corresponding path program 49 times [2021-07-13 20:52:01,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:01,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081902441] [2021-07-13 20:52:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:02,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:02,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081902441] [2021-07-13 20:52:02,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081902441] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:02,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:02,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:02,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229121220] [2021-07-13 20:52:02,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:02,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:02,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:02,095 INFO L87 Difference]: Start difference. First operand 3876 states and 13081 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) [2021-07-13 20:52:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:04,340 INFO L93 Difference]: Finished difference Result 7021 states and 23934 transitions. [2021-07-13 20:52:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 20:52:04,341 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 [2021-07-13 20:52:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:04,356 INFO L225 Difference]: With dead ends: 7021 [2021-07-13 20:52:04,357 INFO L226 Difference]: Without dead ends: 6969 [2021-07-13 20:52:04,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1324.0ms TimeCoverageRelationStatistics Valid=386, Invalid=4170, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 20:52:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6969 states. [2021-07-13 20:52:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6969 to 3862. [2021-07-13 20:52:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.3773633773633773) internal successors, (13040), 3861 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13040 transitions. [2021-07-13 20:52:04,436 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13040 transitions. Word has length 39 [2021-07-13 20:52:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:04,436 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13040 transitions. [2021-07-13 20:52:04,436 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) [2021-07-13 20:52:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13040 transitions. [2021-07-13 20:52:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:04,441 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:04,441 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:04,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-13 20:52:04,441 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:04,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2035993822, now seen corresponding path program 50 times [2021-07-13 20:52:04,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:04,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336911969] [2021-07-13 20:52:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:04,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:04,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336911969] [2021-07-13 20:52:04,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336911969] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:04,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:04,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:04,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449530476] [2021-07-13 20:52:04,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:04,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:04,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:04,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:04,668 INFO L87 Difference]: Start difference. First operand 3862 states and 13040 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) [2021-07-13 20:52:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:05,996 INFO L93 Difference]: Finished difference Result 5717 states and 19331 transitions. [2021-07-13 20:52:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 20:52:05,997 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 [2021-07-13 20:52:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:06,008 INFO L225 Difference]: With dead ends: 5717 [2021-07-13 20:52:06,009 INFO L226 Difference]: Without dead ends: 5662 [2021-07-13 20:52:06,009 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 747.7ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 20:52:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-07-13 20:52:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 3870. [2021-07-13 20:52:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3869 states have (on average 3.3765830964073404) internal successors, (13064), 3869 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 13064 transitions. [2021-07-13 20:52:06,080 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 13064 transitions. Word has length 39 [2021-07-13 20:52:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:06,080 INFO L482 AbstractCegarLoop]: Abstraction has 3870 states and 13064 transitions. [2021-07-13 20:52:06,080 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) [2021-07-13 20:52:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 13064 transitions. [2021-07-13 20:52:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:06,086 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:06,086 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:06,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-13 20:52:06,086 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:06,087 INFO L82 PathProgramCache]: Analyzing trace with hash -863341600, now seen corresponding path program 51 times [2021-07-13 20:52:06,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:06,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248929039] [2021-07-13 20:52:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:06,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:06,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248929039] [2021-07-13 20:52:06,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248929039] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:06,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:06,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:06,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859041751] [2021-07-13 20:52:06,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:06,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:06,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:06,265 INFO L87 Difference]: Start difference. First operand 3870 states and 13064 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) [2021-07-13 20:52:07,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:07,946 INFO L93 Difference]: Finished difference Result 6578 states and 22265 transitions. [2021-07-13 20:52:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 20:52:07,947 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 [2021-07-13 20:52:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:07,961 INFO L225 Difference]: With dead ends: 6578 [2021-07-13 20:52:07,961 INFO L226 Difference]: Without dead ends: 6518 [2021-07-13 20:52:07,962 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 922.7ms TimeCoverageRelationStatistics Valid=276, Invalid=2694, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 20:52:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2021-07-13 20:52:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 3868. [2021-07-13 20:52:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3770364623739333) internal successors, (13059), 3867 states have internal predecessors, (13059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13059 transitions. [2021-07-13 20:52:08,072 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13059 transitions. Word has length 39 [2021-07-13 20:52:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:08,072 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13059 transitions. [2021-07-13 20:52:08,072 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) [2021-07-13 20:52:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13059 transitions. [2021-07-13 20:52:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:08,077 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:08,077 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:08,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-13 20:52:08,078 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1554222094, now seen corresponding path program 52 times [2021-07-13 20:52:08,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:08,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194789491] [2021-07-13 20:52:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:08,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:08,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194789491] [2021-07-13 20:52:08,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194789491] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:08,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:08,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:08,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294140349] [2021-07-13 20:52:08,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:08,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:08,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:08,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:08,269 INFO L87 Difference]: Start difference. First operand 3868 states and 13059 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) [2021-07-13 20:52:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:09,593 INFO L93 Difference]: Finished difference Result 5638 states and 19157 transitions. [2021-07-13 20:52:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 20:52:09,593 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 [2021-07-13 20:52:09,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:09,610 INFO L225 Difference]: With dead ends: 5638 [2021-07-13 20:52:09,610 INFO L226 Difference]: Without dead ends: 5547 [2021-07-13 20:52:09,611 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 694.1ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 20:52:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-07-13 20:52:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3868. [2021-07-13 20:52:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3754848719937938) internal successors, (13053), 3867 states have internal predecessors, (13053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13053 transitions. [2021-07-13 20:52:09,715 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13053 transitions. Word has length 39 [2021-07-13 20:52:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:09,715 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13053 transitions. [2021-07-13 20:52:09,715 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) [2021-07-13 20:52:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13053 transitions. [2021-07-13 20:52:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:09,724 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:09,724 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:09,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-13 20:52:09,724 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash 51739888, now seen corresponding path program 53 times [2021-07-13 20:52:09,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:09,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277976776] [2021-07-13 20:52:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:10,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:10,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277976776] [2021-07-13 20:52:10,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277976776] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:10,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:10,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:10,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030605819] [2021-07-13 20:52:10,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:10,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:10,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:10,006 INFO L87 Difference]: Start difference. First operand 3868 states and 13053 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) [2021-07-13 20:52:11,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:11,645 INFO L93 Difference]: Finished difference Result 6470 states and 22033 transitions. [2021-07-13 20:52:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:52:11,645 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 [2021-07-13 20:52:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:11,660 INFO L225 Difference]: With dead ends: 6470 [2021-07-13 20:52:11,660 INFO L226 Difference]: Without dead ends: 6370 [2021-07-13 20:52:11,661 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 894.4ms TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 20:52:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2021-07-13 20:52:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 3862. [2021-07-13 20:52:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.375809375809376) internal successors, (13034), 3861 states have internal predecessors, (13034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13034 transitions. [2021-07-13 20:52:11,744 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13034 transitions. Word has length 39 [2021-07-13 20:52:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:11,744 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13034 transitions. [2021-07-13 20:52:11,744 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) [2021-07-13 20:52:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13034 transitions. [2021-07-13 20:52:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:11,750 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:11,750 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:11,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-13 20:52:11,750 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash -184885108, now seen corresponding path program 54 times [2021-07-13 20:52:11,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:11,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066612422] [2021-07-13 20:52:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:11,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:11,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066612422] [2021-07-13 20:52:11,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066612422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:11,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:11,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-13 20:52:11,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138903451] [2021-07-13 20:52:11,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 20:52:11,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:11,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 20:52:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-13 20:52:11,943 INFO L87 Difference]: Start difference. First operand 3862 states and 13034 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) [2021-07-13 20:52:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:13,324 INFO L93 Difference]: Finished difference Result 6347 states and 21652 transitions. [2021-07-13 20:52:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-13 20:52:13,324 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 [2021-07-13 20:52:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:13,339 INFO L225 Difference]: With dead ends: 6347 [2021-07-13 20:52:13,340 INFO L226 Difference]: Without dead ends: 6271 [2021-07-13 20:52:13,340 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 721.2ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 20:52:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6271 states. [2021-07-13 20:52:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6271 to 3894. [2021-07-13 20:52:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3893 states have (on average 3.37066529668636) internal successors, (13122), 3893 states have internal predecessors, (13122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 13122 transitions. [2021-07-13 20:52:13,430 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 13122 transitions. Word has length 39 [2021-07-13 20:52:13,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:13,431 INFO L482 AbstractCegarLoop]: Abstraction has 3894 states and 13122 transitions. [2021-07-13 20:52:13,431 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) [2021-07-13 20:52:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 13122 transitions. [2021-07-13 20:52:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:13,437 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:13,437 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:13,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-13 20:52:13,438 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1202938720, now seen corresponding path program 55 times [2021-07-13 20:52:13,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:13,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602071505] [2021-07-13 20:52:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:13,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:13,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602071505] [2021-07-13 20:52:13,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602071505] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:13,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:13,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:13,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185465991] [2021-07-13 20:52:13,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:13,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:13,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:13,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:13,624 INFO L87 Difference]: Start difference. First operand 3894 states and 13122 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) [2021-07-13 20:52:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:15,153 INFO L93 Difference]: Finished difference Result 6329 states and 21598 transitions. [2021-07-13 20:52:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 20:52:15,154 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 [2021-07-13 20:52:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:15,167 INFO L225 Difference]: With dead ends: 6329 [2021-07-13 20:52:15,167 INFO L226 Difference]: Without dead ends: 6263 [2021-07-13 20:52:15,168 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 801.8ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 20:52:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2021-07-13 20:52:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 3886. [2021-07-13 20:52:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3885 states have (on average 3.3714285714285714) internal successors, (13098), 3885 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 13098 transitions. [2021-07-13 20:52:15,241 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 13098 transitions. Word has length 39 [2021-07-13 20:52:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:15,241 INFO L482 AbstractCegarLoop]: Abstraction has 3886 states and 13098 transitions. [2021-07-13 20:52:15,241 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) [2021-07-13 20:52:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 13098 transitions. [2021-07-13 20:52:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:15,247 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:15,247 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:15,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-13 20:52:15,247 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1485204374, now seen corresponding path program 56 times [2021-07-13 20:52:15,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:15,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789509326] [2021-07-13 20:52:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:15,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:15,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789509326] [2021-07-13 20:52:15,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789509326] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:15,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:15,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:52:15,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537482550] [2021-07-13 20:52:15,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:52:15,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:15,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:52:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:52:15,449 INFO L87 Difference]: Start difference. First operand 3886 states and 13098 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) [2021-07-13 20:52:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:16,976 INFO L93 Difference]: Finished difference Result 6350 states and 21651 transitions. [2021-07-13 20:52:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 20:52:16,978 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 [2021-07-13 20:52:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:16,990 INFO L225 Difference]: With dead ends: 6350 [2021-07-13 20:52:16,990 INFO L226 Difference]: Without dead ends: 6188 [2021-07-13 20:52:16,991 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 817.2ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 20:52:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6188 states. [2021-07-13 20:52:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6188 to 3818. [2021-07-13 20:52:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 3.378045585538381) internal successors, (12894), 3817 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 12894 transitions. [2021-07-13 20:52:17,060 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 12894 transitions. Word has length 39 [2021-07-13 20:52:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:17,061 INFO L482 AbstractCegarLoop]: Abstraction has 3818 states and 12894 transitions. [2021-07-13 20:52:17,061 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) [2021-07-13 20:52:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 12894 transitions. [2021-07-13 20:52:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:17,066 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:17,066 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:17,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-13 20:52:17,066 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1069653122, now seen corresponding path program 57 times [2021-07-13 20:52:17,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:17,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937874736] [2021-07-13 20:52:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:17,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:17,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937874736] [2021-07-13 20:52:17,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937874736] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:17,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:17,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:17,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236772921] [2021-07-13 20:52:17,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:17,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:17,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:17,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:17,300 INFO L87 Difference]: Start difference. First operand 3818 states and 12894 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) [2021-07-13 20:52:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:19,885 INFO L93 Difference]: Finished difference Result 6897 states and 23267 transitions. [2021-07-13 20:52:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 20:52:19,886 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 [2021-07-13 20:52:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:19,901 INFO L225 Difference]: With dead ends: 6897 [2021-07-13 20:52:19,901 INFO L226 Difference]: Without dead ends: 6830 [2021-07-13 20:52:19,902 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1369.8ms TimeCoverageRelationStatistics Valid=399, Invalid=4571, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 20:52:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2021-07-13 20:52:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 3854. [2021-07-13 20:52:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.373994290163509) internal successors, (13000), 3853 states have internal predecessors, (13000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13000 transitions. [2021-07-13 20:52:19,994 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13000 transitions. Word has length 39 [2021-07-13 20:52:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:19,994 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13000 transitions. [2021-07-13 20:52:19,994 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) [2021-07-13 20:52:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13000 transitions. [2021-07-13 20:52:20,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:20,001 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:20,001 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:20,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-13 20:52:20,001 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:20,003 INFO L82 PathProgramCache]: Analyzing trace with hash 373238172, now seen corresponding path program 58 times [2021-07-13 20:52:20,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:20,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95311148] [2021-07-13 20:52:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:20,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:20,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95311148] [2021-07-13 20:52:20,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95311148] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:20,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:20,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:20,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605844420] [2021-07-13 20:52:20,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:20,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:20,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:20,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:20,220 INFO L87 Difference]: Start difference. First operand 3854 states and 13000 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) [2021-07-13 20:52:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:23,721 INFO L93 Difference]: Finished difference Result 8258 states and 27892 transitions. [2021-07-13 20:52:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-07-13 20:52:23,721 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 [2021-07-13 20:52:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:23,738 INFO L225 Difference]: With dead ends: 8258 [2021-07-13 20:52:23,738 INFO L226 Difference]: Without dead ends: 8215 [2021-07-13 20:52:23,739 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 1969.8ms TimeCoverageRelationStatistics Valid=621, Invalid=7569, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 20:52:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8215 states. [2021-07-13 20:52:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8215 to 3896. [2021-07-13 20:52:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3895 states have (on average 3.371245186136072) internal successors, (13131), 3895 states have internal predecessors, (13131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 13131 transitions. [2021-07-13 20:52:23,823 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 13131 transitions. Word has length 39 [2021-07-13 20:52:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:23,823 INFO L482 AbstractCegarLoop]: Abstraction has 3896 states and 13131 transitions. [2021-07-13 20:52:23,824 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) [2021-07-13 20:52:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 13131 transitions. [2021-07-13 20:52:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:23,829 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:23,829 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:23,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-13 20:52:23,829 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1407360130, now seen corresponding path program 59 times [2021-07-13 20:52:23,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:23,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817636784] [2021-07-13 20:52:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:24,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:24,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817636784] [2021-07-13 20:52:24,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817636784] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:24,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:24,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:24,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589813828] [2021-07-13 20:52:24,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:24,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:24,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:24,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:24,065 INFO L87 Difference]: Start difference. First operand 3896 states and 13131 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) [2021-07-13 20:52:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:27,638 INFO L93 Difference]: Finished difference Result 8513 states and 28878 transitions. [2021-07-13 20:52:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 20:52:27,638 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 [2021-07-13 20:52:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:27,656 INFO L225 Difference]: With dead ends: 8513 [2021-07-13 20:52:27,656 INFO L226 Difference]: Without dead ends: 8449 [2021-07-13 20:52:27,656 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1990.6ms TimeCoverageRelationStatistics Valid=620, Invalid=7570, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 20:52:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states. [2021-07-13 20:52:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8449 to 3826. [2021-07-13 20:52:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3825 states have (on average 3.3772549019607845) internal successors, (12918), 3825 states have internal predecessors, (12918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 12918 transitions. [2021-07-13 20:52:27,742 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 12918 transitions. Word has length 39 [2021-07-13 20:52:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:27,742 INFO L482 AbstractCegarLoop]: Abstraction has 3826 states and 12918 transitions. [2021-07-13 20:52:27,742 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) [2021-07-13 20:52:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 12918 transitions. [2021-07-13 20:52:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:27,748 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:27,748 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:27,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-13 20:52:27,748 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:27,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:27,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1124761968, now seen corresponding path program 60 times [2021-07-13 20:52:27,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:27,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718131338] [2021-07-13 20:52:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:28,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:28,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718131338] [2021-07-13 20:52:28,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718131338] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:28,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:28,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:28,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766109045] [2021-07-13 20:52:28,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:28,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:28,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:28,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:28,008 INFO L87 Difference]: Start difference. First operand 3826 states and 12918 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) [2021-07-13 20:52:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:29,580 INFO L93 Difference]: Finished difference Result 5641 states and 19191 transitions. [2021-07-13 20:52:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:52:29,581 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 [2021-07-13 20:52:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:29,593 INFO L225 Difference]: With dead ends: 5641 [2021-07-13 20:52:29,593 INFO L226 Difference]: Without dead ends: 5574 [2021-07-13 20:52:29,594 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 872.0ms TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 20:52:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-07-13 20:52:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 3854. [2021-07-13 20:52:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.3734752141188684) internal successors, (12998), 3853 states have internal predecessors, (12998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 12998 transitions. [2021-07-13 20:52:29,674 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 12998 transitions. Word has length 39 [2021-07-13 20:52:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:29,674 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 12998 transitions. [2021-07-13 20:52:29,674 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) [2021-07-13 20:52:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 12998 transitions. [2021-07-13 20:52:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:29,680 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:29,680 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:29,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-13 20:52:29,680 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1276556786, now seen corresponding path program 61 times [2021-07-13 20:52:29,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:29,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355205111] [2021-07-13 20:52:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:29,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:29,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355205111] [2021-07-13 20:52:29,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355205111] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:29,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:29,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:29,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395992784] [2021-07-13 20:52:29,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:29,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:29,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:29,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:29,882 INFO L87 Difference]: Start difference. First operand 3854 states and 12998 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) [2021-07-13 20:52:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:31,444 INFO L93 Difference]: Finished difference Result 5629 states and 19151 transitions. [2021-07-13 20:52:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 20:52:31,444 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 [2021-07-13 20:52:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:31,457 INFO L225 Difference]: With dead ends: 5629 [2021-07-13 20:52:31,457 INFO L226 Difference]: Without dead ends: 5566 [2021-07-13 20:52:31,458 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 837.9ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:52:31,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2021-07-13 20:52:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 3846. [2021-07-13 20:52:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 3.375292587776333) internal successors, (12978), 3845 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 12978 transitions. [2021-07-13 20:52:31,550 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 12978 transitions. Word has length 39 [2021-07-13 20:52:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:31,550 INFO L482 AbstractCegarLoop]: Abstraction has 3846 states and 12978 transitions. [2021-07-13 20:52:31,551 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) [2021-07-13 20:52:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 12978 transitions. [2021-07-13 20:52:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:31,556 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:31,556 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:31,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-13 20:52:31,556 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1053199170, now seen corresponding path program 62 times [2021-07-13 20:52:31,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:31,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877497444] [2021-07-13 20:52:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:31,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:31,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877497444] [2021-07-13 20:52:31,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877497444] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:31,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:31,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:31,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415494452] [2021-07-13 20:52:31,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:31,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:31,756 INFO L87 Difference]: Start difference. First operand 3846 states and 12978 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) [2021-07-13 20:52:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:34,173 INFO L93 Difference]: Finished difference Result 6214 states and 21108 transitions. [2021-07-13 20:52:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-13 20:52:34,173 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 [2021-07-13 20:52:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:34,186 INFO L225 Difference]: With dead ends: 6214 [2021-07-13 20:52:34,186 INFO L226 Difference]: Without dead ends: 6171 [2021-07-13 20:52:34,186 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 1471.2ms TimeCoverageRelationStatistics Valid=402, Invalid=4428, Unknown=0, NotChecked=0, Total=4830 [2021-07-13 20:52:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2021-07-13 20:52:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 3874. [2021-07-13 20:52:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 3.3736121869351923) internal successors, (13066), 3873 states have internal predecessors, (13066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 13066 transitions. [2021-07-13 20:52:34,263 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 13066 transitions. Word has length 39 [2021-07-13 20:52:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:34,263 INFO L482 AbstractCegarLoop]: Abstraction has 3874 states and 13066 transitions. [2021-07-13 20:52:34,263 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) [2021-07-13 20:52:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 13066 transitions. [2021-07-13 20:52:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:34,269 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:34,269 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:34,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-13 20:52:34,270 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1461169824, now seen corresponding path program 63 times [2021-07-13 20:52:34,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:34,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328269237] [2021-07-13 20:52:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:34,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:34,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328269237] [2021-07-13 20:52:34,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328269237] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:34,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:34,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:34,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994975152] [2021-07-13 20:52:34,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:34,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:34,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:34,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:34,497 INFO L87 Difference]: Start difference. First operand 3874 states and 13066 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) [2021-07-13 20:52:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:36,962 INFO L93 Difference]: Finished difference Result 7060 states and 23999 transitions. [2021-07-13 20:52:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-07-13 20:52:36,962 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 [2021-07-13 20:52:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:36,979 INFO L225 Difference]: With dead ends: 7060 [2021-07-13 20:52:36,979 INFO L226 Difference]: Without dead ends: 7008 [2021-07-13 20:52:36,980 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 1454.6ms TimeCoverageRelationStatistics Valid=437, Invalid=5113, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 20:52:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2021-07-13 20:52:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 3862. [2021-07-13 20:52:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.375291375291375) internal successors, (13032), 3861 states have internal predecessors, (13032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13032 transitions. [2021-07-13 20:52:37,073 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13032 transitions. Word has length 39 [2021-07-13 20:52:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:37,073 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13032 transitions. [2021-07-13 20:52:37,073 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) [2021-07-13 20:52:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13032 transitions. [2021-07-13 20:52:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:37,080 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:37,080 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:37,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-13 20:52:37,080 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash -134715600, now seen corresponding path program 64 times [2021-07-13 20:52:37,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:37,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665862629] [2021-07-13 20:52:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:37,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:37,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665862629] [2021-07-13 20:52:37,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665862629] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:37,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:37,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:37,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622504760] [2021-07-13 20:52:37,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:37,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:37,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:37,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:37,297 INFO L87 Difference]: Start difference. First operand 3862 states and 13032 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) [2021-07-13 20:52:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:38,940 INFO L93 Difference]: Finished difference Result 5773 states and 19479 transitions. [2021-07-13 20:52:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 20:52:38,942 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 [2021-07-13 20:52:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:38,954 INFO L225 Difference]: With dead ends: 5773 [2021-07-13 20:52:38,954 INFO L226 Difference]: Without dead ends: 5718 [2021-07-13 20:52:38,955 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 923.8ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 20:52:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2021-07-13 20:52:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 3864. [2021-07-13 20:52:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3863 states have (on average 3.3743204763137458) internal successors, (13035), 3863 states have internal predecessors, (13035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 13035 transitions. [2021-07-13 20:52:39,028 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 13035 transitions. Word has length 39 [2021-07-13 20:52:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:39,028 INFO L482 AbstractCegarLoop]: Abstraction has 3864 states and 13035 transitions. [2021-07-13 20:52:39,028 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) [2021-07-13 20:52:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 13035 transitions. [2021-07-13 20:52:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:39,034 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:39,034 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:39,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-13 20:52:39,035 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1037936622, now seen corresponding path program 65 times [2021-07-13 20:52:39,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:39,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044390945] [2021-07-13 20:52:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:39,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:39,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044390945] [2021-07-13 20:52:39,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044390945] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:39,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:39,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:39,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383433622] [2021-07-13 20:52:39,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:39,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:39,228 INFO L87 Difference]: Start difference. First operand 3864 states and 13035 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) [2021-07-13 20:52:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:41,076 INFO L93 Difference]: Finished difference Result 6566 states and 22256 transitions. [2021-07-13 20:52:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 20:52:41,077 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 [2021-07-13 20:52:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:41,091 INFO L225 Difference]: With dead ends: 6566 [2021-07-13 20:52:41,091 INFO L226 Difference]: Without dead ends: 6520 [2021-07-13 20:52:41,092 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 977.1ms TimeCoverageRelationStatistics Valid=297, Invalid=3125, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 20:52:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-07-13 20:52:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 3868. [2021-07-13 20:52:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3728988880268944) internal successors, (13043), 3867 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13043 transitions. [2021-07-13 20:52:41,170 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13043 transitions. Word has length 39 [2021-07-13 20:52:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:41,170 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13043 transitions. [2021-07-13 20:52:41,171 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) [2021-07-13 20:52:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13043 transitions. [2021-07-13 20:52:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:41,176 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:41,176 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:41,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-13 20:52:41,177 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:41,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:41,177 INFO L82 PathProgramCache]: Analyzing trace with hash 790470460, now seen corresponding path program 66 times [2021-07-13 20:52:41,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:41,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382210653] [2021-07-13 20:52:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:41,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:41,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382210653] [2021-07-13 20:52:41,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382210653] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:41,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:41,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:41,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804242708] [2021-07-13 20:52:41,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:41,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:41,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:41,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:41,386 INFO L87 Difference]: Start difference. First operand 3868 states and 13043 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) [2021-07-13 20:52:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:43,065 INFO L93 Difference]: Finished difference Result 5676 states and 19264 transitions. [2021-07-13 20:52:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:52:43,066 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 [2021-07-13 20:52:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:43,079 INFO L225 Difference]: With dead ends: 5676 [2021-07-13 20:52:43,079 INFO L226 Difference]: Without dead ends: 5627 [2021-07-13 20:52:43,079 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 941.8ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 20:52:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2021-07-13 20:52:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 3858. [2021-07-13 20:52:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3761991184858697) internal successors, (13022), 3857 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 13022 transitions. [2021-07-13 20:52:43,161 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 13022 transitions. Word has length 39 [2021-07-13 20:52:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:43,161 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 13022 transitions. [2021-07-13 20:52:43,161 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) [2021-07-13 20:52:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 13022 transitions. [2021-07-13 20:52:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:43,168 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:43,168 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:43,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-13 20:52:43,168 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1831448740, now seen corresponding path program 67 times [2021-07-13 20:52:43,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:43,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036601614] [2021-07-13 20:52:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:43,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:43,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036601614] [2021-07-13 20:52:43,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036601614] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:43,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:43,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:43,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813748987] [2021-07-13 20:52:43,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:43,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:43,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:43,371 INFO L87 Difference]: Start difference. First operand 3858 states and 13022 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) [2021-07-13 20:52:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:44,908 INFO L93 Difference]: Finished difference Result 5685 states and 19349 transitions. [2021-07-13 20:52:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 20:52:44,909 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 [2021-07-13 20:52:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:44,921 INFO L225 Difference]: With dead ends: 5685 [2021-07-13 20:52:44,921 INFO L226 Difference]: Without dead ends: 5618 [2021-07-13 20:52:44,921 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 772.9ms TimeCoverageRelationStatistics Valid=217, Invalid=2135, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 20:52:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2021-07-13 20:52:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 3898. [2021-07-13 20:52:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3897 states have (on average 3.369258403900436) internal successors, (13130), 3897 states have internal predecessors, (13130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 13130 transitions. [2021-07-13 20:52:44,991 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 13130 transitions. Word has length 39 [2021-07-13 20:52:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:44,991 INFO L482 AbstractCegarLoop]: Abstraction has 3898 states and 13130 transitions. [2021-07-13 20:52:44,991 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) [2021-07-13 20:52:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 13130 transitions. [2021-07-13 20:52:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:44,997 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:44,997 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:44,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-13 20:52:44,997 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash 62199802, now seen corresponding path program 68 times [2021-07-13 20:52:44,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:44,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818863488] [2021-07-13 20:52:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:45,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:45,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818863488] [2021-07-13 20:52:45,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818863488] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:45,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:45,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:45,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712106327] [2021-07-13 20:52:45,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:45,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:45,204 INFO L87 Difference]: Start difference. First operand 3898 states and 13130 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) [2021-07-13 20:52:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:46,720 INFO L93 Difference]: Finished difference Result 5673 states and 19309 transitions. [2021-07-13 20:52:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 20:52:46,721 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 [2021-07-13 20:52:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:46,732 INFO L225 Difference]: With dead ends: 5673 [2021-07-13 20:52:46,732 INFO L226 Difference]: Without dead ends: 5610 [2021-07-13 20:52:46,733 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 752.8ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 20:52:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2021-07-13 20:52:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 3890. [2021-07-13 20:52:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 3889 states have (on average 3.370017999485729) internal successors, (13106), 3889 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 13106 transitions. [2021-07-13 20:52:46,799 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 13106 transitions. Word has length 39 [2021-07-13 20:52:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:46,799 INFO L482 AbstractCegarLoop]: Abstraction has 3890 states and 13106 transitions. [2021-07-13 20:52:46,799 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) [2021-07-13 20:52:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 13106 transitions. [2021-07-13 20:52:46,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:46,804 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:46,804 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:46,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-13 20:52:46,804 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:46,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 126833308, now seen corresponding path program 69 times [2021-07-13 20:52:46,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:46,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010829592] [2021-07-13 20:52:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:47,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:47,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010829592] [2021-07-13 20:52:47,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010829592] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:47,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:47,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:47,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382700312] [2021-07-13 20:52:47,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:47,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:47,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:47,039 INFO L87 Difference]: Start difference. First operand 3890 states and 13106 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) [2021-07-13 20:52:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:48,616 INFO L93 Difference]: Finished difference Result 5697 states and 19369 transitions. [2021-07-13 20:52:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 20:52:48,616 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 [2021-07-13 20:52:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:48,630 INFO L225 Difference]: With dead ends: 5697 [2021-07-13 20:52:48,630 INFO L226 Difference]: Without dead ends: 5574 [2021-07-13 20:52:48,630 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 818.2ms TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 20:52:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-07-13 20:52:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 3858. [2021-07-13 20:52:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3720508166969148) internal successors, (13006), 3857 states have internal predecessors, (13006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 13006 transitions. [2021-07-13 20:52:48,735 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 13006 transitions. Word has length 39 [2021-07-13 20:52:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:48,735 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 13006 transitions. [2021-07-13 20:52:48,735 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) [2021-07-13 20:52:48,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 13006 transitions. [2021-07-13 20:52:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:48,740 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:48,741 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:48,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-13 20:52:48,741 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:48,741 INFO L82 PathProgramCache]: Analyzing trace with hash 950439516, now seen corresponding path program 70 times [2021-07-13 20:52:48,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:48,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093505647] [2021-07-13 20:52:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:48,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:48,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093505647] [2021-07-13 20:52:48,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093505647] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:48,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:48,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:48,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145829942] [2021-07-13 20:52:48,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:48,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:48,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:48,945 INFO L87 Difference]: Start difference. First operand 3858 states and 13006 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) [2021-07-13 20:52:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:51,150 INFO L93 Difference]: Finished difference Result 6282 states and 21379 transitions. [2021-07-13 20:52:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 20:52:51,150 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 [2021-07-13 20:52:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:51,165 INFO L225 Difference]: With dead ends: 6282 [2021-07-13 20:52:51,165 INFO L226 Difference]: Without dead ends: 6239 [2021-07-13 20:52:51,165 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1252.7ms TimeCoverageRelationStatistics Valid=370, Invalid=3920, Unknown=0, NotChecked=0, Total=4290 [2021-07-13 20:52:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2021-07-13 20:52:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 3872. [2021-07-13 20:52:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3871 states have (on average 3.370446912942392) internal successors, (13047), 3871 states have internal predecessors, (13047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13047 transitions. [2021-07-13 20:52:51,248 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13047 transitions. Word has length 39 [2021-07-13 20:52:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:51,248 INFO L482 AbstractCegarLoop]: Abstraction has 3872 states and 13047 transitions. [2021-07-13 20:52:51,249 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) [2021-07-13 20:52:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13047 transitions. [2021-07-13 20:52:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:51,255 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:51,255 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:51,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-13 20:52:51,255 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash -830158786, now seen corresponding path program 71 times [2021-07-13 20:52:51,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:51,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17795635] [2021-07-13 20:52:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:51,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:51,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17795635] [2021-07-13 20:52:51,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17795635] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:51,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:51,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:51,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798069351] [2021-07-13 20:52:51,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:51,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:51,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:51,468 INFO L87 Difference]: Start difference. First operand 3872 states and 13047 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) [2021-07-13 20:52:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:53,940 INFO L93 Difference]: Finished difference Result 7143 states and 24309 transitions. [2021-07-13 20:52:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 20:52:53,940 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 [2021-07-13 20:52:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:53,955 INFO L225 Difference]: With dead ends: 7143 [2021-07-13 20:52:53,955 INFO L226 Difference]: Without dead ends: 7091 [2021-07-13 20:52:53,956 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1414.4ms TimeCoverageRelationStatistics Valid=412, Invalid=4700, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 20:52:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2021-07-13 20:52:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 3842. [2021-07-13 20:52:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3842 states, 3841 states have (on average 3.3720385316323873) internal successors, (12952), 3841 states have internal predecessors, (12952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 12952 transitions. [2021-07-13 20:52:54,033 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 12952 transitions. Word has length 39 [2021-07-13 20:52:54,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:54,040 INFO L482 AbstractCegarLoop]: Abstraction has 3842 states and 12952 transitions. [2021-07-13 20:52:54,041 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) [2021-07-13 20:52:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 12952 transitions. [2021-07-13 20:52:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:54,049 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:54,049 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:54,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-13 20:52:54,049 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1868923086, now seen corresponding path program 72 times [2021-07-13 20:52:54,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:54,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559897716] [2021-07-13 20:52:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:54,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:54,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559897716] [2021-07-13 20:52:54,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559897716] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:54,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:54,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:54,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984804789] [2021-07-13 20:52:54,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:54,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:54,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:54,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:54,259 INFO L87 Difference]: Start difference. First operand 3842 states and 12952 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) [2021-07-13 20:52:55,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:55,852 INFO L93 Difference]: Finished difference Result 5803 states and 19576 transitions. [2021-07-13 20:52:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:52:55,853 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 [2021-07-13 20:52:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:55,866 INFO L225 Difference]: With dead ends: 5803 [2021-07-13 20:52:55,866 INFO L226 Difference]: Without dead ends: 5748 [2021-07-13 20:52:55,867 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 834.8ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 20:52:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-07-13 20:52:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 3850. [2021-07-13 20:52:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 3.3712652637048586) internal successors, (12976), 3849 states have internal predecessors, (12976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 12976 transitions. [2021-07-13 20:52:55,950 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 12976 transitions. Word has length 39 [2021-07-13 20:52:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:55,950 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 12976 transitions. [2021-07-13 20:52:55,950 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) [2021-07-13 20:52:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 12976 transitions. [2021-07-13 20:52:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:55,957 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:55,957 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:55,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-13 20:52:55,957 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:55,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1253391988, now seen corresponding path program 73 times [2021-07-13 20:52:55,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:55,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894952667] [2021-07-13 20:52:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:56,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:56,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894952667] [2021-07-13 20:52:56,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894952667] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:56,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:56,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:56,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041128566] [2021-07-13 20:52:56,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:56,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:56,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:56,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:56,171 INFO L87 Difference]: Start difference. First operand 3850 states and 12976 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) [2021-07-13 20:52:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:58,014 INFO L93 Difference]: Finished difference Result 6664 states and 22510 transitions. [2021-07-13 20:52:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 20:52:58,015 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 [2021-07-13 20:52:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:58,031 INFO L225 Difference]: With dead ends: 6664 [2021-07-13 20:52:58,032 INFO L226 Difference]: Without dead ends: 6604 [2021-07-13 20:52:58,032 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 976.8ms TimeCoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 20:52:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-07-13 20:52:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 3848. [2021-07-13 20:52:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.371718221991162) internal successors, (12971), 3847 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12971 transitions. [2021-07-13 20:52:58,112 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12971 transitions. Word has length 39 [2021-07-13 20:52:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:58,112 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12971 transitions. [2021-07-13 20:52:58,112 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) [2021-07-13 20:52:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12971 transitions. [2021-07-13 20:52:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:58,117 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:58,118 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:58,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-13 20:52:58,118 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:58,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:58,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1164171706, now seen corresponding path program 74 times [2021-07-13 20:52:58,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:58,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99328122] [2021-07-13 20:52:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:52:58,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:58,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99328122] [2021-07-13 20:52:58,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99328122] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:58,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:58,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:52:58,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816036660] [2021-07-13 20:52:58,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:52:58,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:58,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:52:58,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:52:58,317 INFO L87 Difference]: Start difference. First operand 3848 states and 12971 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) [2021-07-13 20:52:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:59,876 INFO L93 Difference]: Finished difference Result 5772 states and 19530 transitions. [2021-07-13 20:52:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 20:52:59,876 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 [2021-07-13 20:52:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:59,890 INFO L225 Difference]: With dead ends: 5772 [2021-07-13 20:52:59,890 INFO L226 Difference]: Without dead ends: 5681 [2021-07-13 20:52:59,891 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 799.0ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 20:52:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2021-07-13 20:52:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 3848. [2021-07-13 20:52:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.3701585651156747) internal successors, (12965), 3847 states have internal predecessors, (12965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12965 transitions. [2021-07-13 20:52:59,978 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12965 transitions. Word has length 39 [2021-07-13 20:52:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:59,978 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12965 transitions. [2021-07-13 20:52:59,978 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) [2021-07-13 20:52:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12965 transitions. [2021-07-13 20:52:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:52:59,984 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:59,985 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:59,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-13 20:52:59,985 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:59,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash -338310500, now seen corresponding path program 75 times [2021-07-13 20:52:59,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:59,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397388464] [2021-07-13 20:52:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:00,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:00,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397388464] [2021-07-13 20:53:00,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397388464] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:00,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:00,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:00,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354114705] [2021-07-13 20:53:00,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:00,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:00,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:00,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:00,192 INFO L87 Difference]: Start difference. First operand 3848 states and 12965 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) [2021-07-13 20:53:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:01,979 INFO L93 Difference]: Finished difference Result 6585 states and 22332 transitions. [2021-07-13 20:53:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:53:01,980 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 [2021-07-13 20:53:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:01,994 INFO L225 Difference]: With dead ends: 6585 [2021-07-13 20:53:01,994 INFO L226 Difference]: Without dead ends: 6469 [2021-07-13 20:53:01,994 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 923.9ms TimeCoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 20:53:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2021-07-13 20:53:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 3826. [2021-07-13 20:53:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3825 states have (on average 3.3762091503267975) internal successors, (12914), 3825 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 12914 transitions. [2021-07-13 20:53:02,075 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 12914 transitions. Word has length 39 [2021-07-13 20:53:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:02,075 INFO L482 AbstractCegarLoop]: Abstraction has 3826 states and 12914 transitions. [2021-07-13 20:53:02,075 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) [2021-07-13 20:53:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 12914 transitions. [2021-07-13 20:53:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:02,080 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:02,080 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:02,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-13 20:53:02,081 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1260584684, now seen corresponding path program 76 times [2021-07-13 20:53:02,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:02,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311980284] [2021-07-13 20:53:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:02,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:02,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311980284] [2021-07-13 20:53:02,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311980284] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:02,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:02,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:02,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917640816] [2021-07-13 20:53:02,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:02,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:02,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:02,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:02,278 INFO L87 Difference]: Start difference. First operand 3826 states and 12914 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) [2021-07-13 20:53:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:03,663 INFO L93 Difference]: Finished difference Result 5481 states and 18673 transitions. [2021-07-13 20:53:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 20:53:03,664 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 [2021-07-13 20:53:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:03,675 INFO L225 Difference]: With dead ends: 5481 [2021-07-13 20:53:03,675 INFO L226 Difference]: Without dead ends: 5414 [2021-07-13 20:53:03,675 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 729.5ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 20:53:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2021-07-13 20:53:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 3878. [2021-07-13 20:53:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 3.3660046427650245) internal successors, (13050), 3877 states have internal predecessors, (13050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 13050 transitions. [2021-07-13 20:53:03,744 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 13050 transitions. Word has length 39 [2021-07-13 20:53:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:03,744 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 13050 transitions. [2021-07-13 20:53:03,744 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) [2021-07-13 20:53:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 13050 transitions. [2021-07-13 20:53:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:03,749 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:03,749 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:03,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-13 20:53:03,750 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1140734070, now seen corresponding path program 77 times [2021-07-13 20:53:03,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:03,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037617760] [2021-07-13 20:53:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:03,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:03,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037617760] [2021-07-13 20:53:03,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037617760] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:03,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:03,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:03,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184553344] [2021-07-13 20:53:03,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:03,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:03,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:03,944 INFO L87 Difference]: Start difference. First operand 3878 states and 13050 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) [2021-07-13 20:53:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:05,262 INFO L93 Difference]: Finished difference Result 5469 states and 18633 transitions. [2021-07-13 20:53:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-13 20:53:05,262 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 [2021-07-13 20:53:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:05,274 INFO L225 Difference]: With dead ends: 5469 [2021-07-13 20:53:05,274 INFO L226 Difference]: Without dead ends: 5406 [2021-07-13 20:53:05,275 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 701.9ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 20:53:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2021-07-13 20:53:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 3870. [2021-07-13 20:53:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3869 states have (on average 3.3667614370638406) internal successors, (13026), 3869 states have internal predecessors, (13026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 13026 transitions. [2021-07-13 20:53:05,345 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 13026 transitions. Word has length 39 [2021-07-13 20:53:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:05,345 INFO L482 AbstractCegarLoop]: Abstraction has 3870 states and 13026 transitions. [2021-07-13 20:53:05,345 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) [2021-07-13 20:53:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 13026 transitions. [2021-07-13 20:53:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:05,351 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:05,352 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:05,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-13 20:53:05,352 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:05,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1076100564, now seen corresponding path program 78 times [2021-07-13 20:53:05,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:05,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724177221] [2021-07-13 20:53:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:05,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:05,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724177221] [2021-07-13 20:53:05,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724177221] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:05,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:05,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:05,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571519709] [2021-07-13 20:53:05,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:05,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:05,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:05,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:05,593 INFO L87 Difference]: Start difference. First operand 3870 states and 13026 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) [2021-07-13 20:53:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:06,908 INFO L93 Difference]: Finished difference Result 5477 states and 18645 transitions. [2021-07-13 20:53:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 20:53:06,909 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 [2021-07-13 20:53:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:06,920 INFO L225 Difference]: With dead ends: 5477 [2021-07-13 20:53:06,921 INFO L226 Difference]: Without dead ends: 5334 [2021-07-13 20:53:06,921 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 733.7ms TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 20:53:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2021-07-13 20:53:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 3818. [2021-07-13 20:53:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 3.378045585538381) internal successors, (12894), 3817 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 12894 transitions. [2021-07-13 20:53:06,990 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 12894 transitions. Word has length 39 [2021-07-13 20:53:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:06,990 INFO L482 AbstractCegarLoop]: Abstraction has 3818 states and 12894 transitions. [2021-07-13 20:53:06,990 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) [2021-07-13 20:53:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 12894 transitions. [2021-07-13 20:53:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:06,995 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:06,995 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:06,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-13 20:53:06,996 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:06,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1946962860, now seen corresponding path program 79 times [2021-07-13 20:53:06,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:06,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844542666] [2021-07-13 20:53:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:07,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:07,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844542666] [2021-07-13 20:53:07,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844542666] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:07,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:07,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:53:07,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236702051] [2021-07-13 20:53:07,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:53:07,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:07,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:53:07,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:53:07,204 INFO L87 Difference]: Start difference. First operand 3818 states and 12894 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) [2021-07-13 20:53:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:11,033 INFO L93 Difference]: Finished difference Result 9174 states and 31032 transitions. [2021-07-13 20:53:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-07-13 20:53:11,033 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 [2021-07-13 20:53:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:11,053 INFO L225 Difference]: With dead ends: 9174 [2021-07-13 20:53:11,053 INFO L226 Difference]: Without dead ends: 9044 [2021-07-13 20:53:11,053 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 2140.4ms TimeCoverageRelationStatistics Valid=708, Invalid=8604, Unknown=0, NotChecked=0, Total=9312 [2021-07-13 20:53:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-07-13 20:53:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 4543. [2021-07-13 20:53:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 4542 states have (on average 3.403566710700132) internal successors, (15459), 4542 states have internal predecessors, (15459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 15459 transitions. [2021-07-13 20:53:11,152 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 15459 transitions. Word has length 39 [2021-07-13 20:53:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:11,153 INFO L482 AbstractCegarLoop]: Abstraction has 4543 states and 15459 transitions. [2021-07-13 20:53:11,153 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) [2021-07-13 20:53:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 15459 transitions. [2021-07-13 20:53:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:11,159 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:11,159 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:11,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-13 20:53:11,160 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:11,160 INFO L82 PathProgramCache]: Analyzing trace with hash -905113142, now seen corresponding path program 80 times [2021-07-13 20:53:11,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:11,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369329039] [2021-07-13 20:53:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:11,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:11,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369329039] [2021-07-13 20:53:11,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369329039] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:11,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:11,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:53:11,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949693307] [2021-07-13 20:53:11,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:53:11,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:53:11,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:53:11,340 INFO L87 Difference]: Start difference. First operand 4543 states and 15459 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) [2021-07-13 20:53:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:16,447 INFO L93 Difference]: Finished difference Result 11582 states and 39219 transitions. [2021-07-13 20:53:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-07-13 20:53:16,447 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 [2021-07-13 20:53:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:16,476 INFO L225 Difference]: With dead ends: 11582 [2021-07-13 20:53:16,476 INFO L226 Difference]: Without dead ends: 11476 [2021-07-13 20:53:16,477 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6011 ImplicationChecksByTransitivity, 3097.3ms TimeCoverageRelationStatistics Valid=1123, Invalid=15133, Unknown=0, NotChecked=0, Total=16256 [2021-07-13 20:53:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11476 states. [2021-07-13 20:53:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11476 to 5005. [2021-07-13 20:53:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 5004 states have (on average 3.4332533972821744) internal successors, (17180), 5004 states have internal predecessors, (17180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 17180 transitions. [2021-07-13 20:53:16,624 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 17180 transitions. Word has length 39 [2021-07-13 20:53:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:16,624 INFO L482 AbstractCegarLoop]: Abstraction has 5005 states and 17180 transitions. [2021-07-13 20:53:16,624 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) [2021-07-13 20:53:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 17180 transitions. [2021-07-13 20:53:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:16,631 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:16,631 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:16,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-13 20:53:16,631 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:16,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1609255852, now seen corresponding path program 81 times [2021-07-13 20:53:16,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:16,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801043566] [2021-07-13 20:53:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:16,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:16,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801043566] [2021-07-13 20:53:16,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801043566] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:16,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:16,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:53:16,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666219941] [2021-07-13 20:53:16,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:53:16,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:53:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:53:16,809 INFO L87 Difference]: Start difference. First operand 5005 states and 17180 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) [2021-07-13 20:53:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:22,169 INFO L93 Difference]: Finished difference Result 12191 states and 41382 transitions. [2021-07-13 20:53:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-07-13 20:53:22,169 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 [2021-07-13 20:53:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:22,198 INFO L225 Difference]: With dead ends: 12191 [2021-07-13 20:53:22,199 INFO L226 Difference]: Without dead ends: 12052 [2021-07-13 20:53:22,200 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6441 ImplicationChecksByTransitivity, 3228.0ms TimeCoverageRelationStatistics Valid=1171, Invalid=16121, Unknown=0, NotChecked=0, Total=17292 [2021-07-13 20:53:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12052 states. [2021-07-13 20:53:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12052 to 5161. [2021-07-13 20:53:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 3.442829457364341) internal successors, (17765), 5160 states have internal predecessors, (17765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 17765 transitions. [2021-07-13 20:53:22,344 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 17765 transitions. Word has length 39 [2021-07-13 20:53:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:22,344 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 17765 transitions. [2021-07-13 20:53:22,344 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) [2021-07-13 20:53:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 17765 transitions. [2021-07-13 20:53:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:22,353 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:22,353 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:22,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-13 20:53:22,353 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1200440236, now seen corresponding path program 82 times [2021-07-13 20:53:22,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:22,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852928527] [2021-07-13 20:53:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:22,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:22,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852928527] [2021-07-13 20:53:22,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852928527] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:22,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:22,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:53:22,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482157739] [2021-07-13 20:53:22,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:53:22,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:22,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:53:22,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:53:22,538 INFO L87 Difference]: Start difference. First operand 5161 states and 17765 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) [2021-07-13 20:53:28,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:28,345 INFO L93 Difference]: Finished difference Result 12631 states and 43057 transitions. [2021-07-13 20:53:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-07-13 20:53:28,345 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 [2021-07-13 20:53:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:28,377 INFO L225 Difference]: With dead ends: 12631 [2021-07-13 20:53:28,377 INFO L226 Difference]: Without dead ends: 12414 [2021-07-13 20:53:28,378 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6976 ImplicationChecksByTransitivity, 3393.3ms TimeCoverageRelationStatistics Valid=1168, Invalid=17464, Unknown=0, NotChecked=0, Total=18632 [2021-07-13 20:53:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12414 states. [2021-07-13 20:53:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12414 to 5293. [2021-07-13 20:53:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 3.4569160997732427) internal successors, (18294), 5292 states have internal predecessors, (18294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 18294 transitions. [2021-07-13 20:53:28,538 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 18294 transitions. Word has length 39 [2021-07-13 20:53:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:28,538 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 18294 transitions. [2021-07-13 20:53:28,538 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) [2021-07-13 20:53:28,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 18294 transitions. [2021-07-13 20:53:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:28,547 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:28,548 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:28,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-13 20:53:28,548 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:28,548 INFO L82 PathProgramCache]: Analyzing trace with hash -124115176, now seen corresponding path program 83 times [2021-07-13 20:53:28,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:28,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803163176] [2021-07-13 20:53:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:28,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:28,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803163176] [2021-07-13 20:53:28,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803163176] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:28,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:28,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:28,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983209919] [2021-07-13 20:53:28,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:28,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:28,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:28,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:28,743 INFO L87 Difference]: Start difference. First operand 5293 states and 18294 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) [2021-07-13 20:53:32,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:32,989 INFO L93 Difference]: Finished difference Result 10886 states and 37113 transitions. [2021-07-13 20:53:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-07-13 20:53:32,989 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 [2021-07-13 20:53:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:33,013 INFO L225 Difference]: With dead ends: 10886 [2021-07-13 20:53:33,013 INFO L226 Difference]: Without dead ends: 10819 [2021-07-13 20:53:33,014 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3762 ImplicationChecksByTransitivity, 2362.0ms TimeCoverageRelationStatistics Valid=796, Invalid=10334, Unknown=0, NotChecked=0, Total=11130 [2021-07-13 20:53:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2021-07-13 20:53:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 5327. [2021-07-13 20:53:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5327 states, 5326 states have (on average 3.4555013143071722) internal successors, (18404), 5326 states have internal predecessors, (18404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5327 states to 5327 states and 18404 transitions. [2021-07-13 20:53:33,137 INFO L78 Accepts]: Start accepts. Automaton has 5327 states and 18404 transitions. Word has length 39 [2021-07-13 20:53:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:33,137 INFO L482 AbstractCegarLoop]: Abstraction has 5327 states and 18404 transitions. [2021-07-13 20:53:33,137 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) [2021-07-13 20:53:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5327 states and 18404 transitions. [2021-07-13 20:53:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:33,145 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:33,146 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:33,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-13 20:53:33,146 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1318776118, now seen corresponding path program 84 times [2021-07-13 20:53:33,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:33,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69979978] [2021-07-13 20:53:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:33,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:33,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69979978] [2021-07-13 20:53:33,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69979978] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:33,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:33,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:33,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194343154] [2021-07-13 20:53:33,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:33,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:33,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:33,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:33,348 INFO L87 Difference]: Start difference. First operand 5327 states and 18404 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) [2021-07-13 20:53:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:38,956 INFO L93 Difference]: Finished difference Result 12407 states and 42028 transitions. [2021-07-13 20:53:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-07-13 20:53:38,956 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 [2021-07-13 20:53:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:38,983 INFO L225 Difference]: With dead ends: 12407 [2021-07-13 20:53:38,983 INFO L226 Difference]: Without dead ends: 12364 [2021-07-13 20:53:38,984 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6917 ImplicationChecksByTransitivity, 3420.6ms TimeCoverageRelationStatistics Valid=1217, Invalid=17415, Unknown=0, NotChecked=0, Total=18632 [2021-07-13 20:53:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12364 states. [2021-07-13 20:53:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12364 to 5367. [2021-07-13 20:53:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5366 states have (on average 3.4549012299664557) internal successors, (18539), 5366 states have internal predecessors, (18539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 18539 transitions. [2021-07-13 20:53:39,117 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 18539 transitions. Word has length 39 [2021-07-13 20:53:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:39,117 INFO L482 AbstractCegarLoop]: Abstraction has 5367 states and 18539 transitions. [2021-07-13 20:53:39,117 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) [2021-07-13 20:53:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 18539 transitions. [2021-07-13 20:53:39,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:39,125 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:39,126 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:39,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-13 20:53:39,126 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:39,126 INFO L82 PathProgramCache]: Analyzing trace with hash -461822184, now seen corresponding path program 85 times [2021-07-13 20:53:39,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:39,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968052329] [2021-07-13 20:53:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:39,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:39,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968052329] [2021-07-13 20:53:39,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968052329] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:39,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:39,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:39,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404406285] [2021-07-13 20:53:39,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:39,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:39,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:39,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:39,328 INFO L87 Difference]: Start difference. First operand 5367 states and 18539 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) [2021-07-13 20:53:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:45,079 INFO L93 Difference]: Finished difference Result 12963 states and 44015 transitions. [2021-07-13 20:53:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-07-13 20:53:45,079 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 [2021-07-13 20:53:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:45,109 INFO L225 Difference]: With dead ends: 12963 [2021-07-13 20:53:45,109 INFO L226 Difference]: Without dead ends: 12887 [2021-07-13 20:53:45,111 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7138 ImplicationChecksByTransitivity, 3472.2ms TimeCoverageRelationStatistics Valid=1246, Invalid=17936, Unknown=0, NotChecked=0, Total=19182 [2021-07-13 20:53:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2021-07-13 20:53:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 5329. [2021-07-13 20:53:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5329 states, 5328 states have (on average 3.459834834834835) internal successors, (18434), 5328 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 18434 transitions. [2021-07-13 20:53:45,254 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 18434 transitions. Word has length 39 [2021-07-13 20:53:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:45,254 INFO L482 AbstractCegarLoop]: Abstraction has 5329 states and 18434 transitions. [2021-07-13 20:53:45,254 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) [2021-07-13 20:53:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 18434 transitions. [2021-07-13 20:53:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:45,263 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:45,263 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:45,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-13 20:53:45,263 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2070299914, now seen corresponding path program 86 times [2021-07-13 20:53:45,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:45,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400091284] [2021-07-13 20:53:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:45,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:45,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400091284] [2021-07-13 20:53:45,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400091284] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:45,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:45,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:45,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634038283] [2021-07-13 20:53:45,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:45,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:45,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:45,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:45,478 INFO L87 Difference]: Start difference. First operand 5329 states and 18434 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) [2021-07-13 20:53:48,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:48,054 INFO L93 Difference]: Finished difference Result 9492 states and 32707 transitions. [2021-07-13 20:53:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-07-13 20:53:48,054 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 [2021-07-13 20:53:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:48,076 INFO L225 Difference]: With dead ends: 9492 [2021-07-13 20:53:48,076 INFO L226 Difference]: Without dead ends: 9425 [2021-07-13 20:53:48,077 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1370.0ms TimeCoverageRelationStatistics Valid=454, Invalid=4948, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 20:53:48,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9425 states. [2021-07-13 20:53:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9425 to 5341. [2021-07-13 20:53:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 5340 states have (on average 3.4569288389513106) internal successors, (18460), 5340 states have internal predecessors, (18460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 18460 transitions. [2021-07-13 20:53:48,204 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 18460 transitions. Word has length 39 [2021-07-13 20:53:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:48,204 INFO L482 AbstractCegarLoop]: Abstraction has 5341 states and 18460 transitions. [2021-07-13 20:53:48,204 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) [2021-07-13 20:53:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 18460 transitions. [2021-07-13 20:53:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:48,214 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:48,214 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:48,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-07-13 20:53:48,214 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:48,214 INFO L82 PathProgramCache]: Analyzing trace with hash -331018840, now seen corresponding path program 87 times [2021-07-13 20:53:48,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:48,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9518213] [2021-07-13 20:53:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:48,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:48,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9518213] [2021-07-13 20:53:48,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9518213] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:48,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:48,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:48,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531793599] [2021-07-13 20:53:48,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:48,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:48,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:48,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:48,472 INFO L87 Difference]: Start difference. First operand 5341 states and 18460 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) [2021-07-13 20:53:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:50,841 INFO L93 Difference]: Finished difference Result 9000 states and 30945 transitions. [2021-07-13 20:53:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-13 20:53:50,842 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 [2021-07-13 20:53:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:50,863 INFO L225 Difference]: With dead ends: 9000 [2021-07-13 20:53:50,863 INFO L226 Difference]: Without dead ends: 8937 [2021-07-13 20:53:50,863 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1369.6ms TimeCoverageRelationStatistics Valid=431, Invalid=4539, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 20:53:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2021-07-13 20:53:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 5333. [2021-07-13 20:53:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5333 states, 5332 states have (on average 3.458364591147787) internal successors, (18440), 5332 states have internal predecessors, (18440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 18440 transitions. [2021-07-13 20:53:51,029 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 18440 transitions. Word has length 39 [2021-07-13 20:53:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:51,030 INFO L482 AbstractCegarLoop]: Abstraction has 5333 states and 18440 transitions. [2021-07-13 20:53:51,030 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) [2021-07-13 20:53:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 18440 transitions. [2021-07-13 20:53:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:51,039 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:51,039 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:51,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-07-13 20:53:51,039 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:51,039 INFO L82 PathProgramCache]: Analyzing trace with hash -107661224, now seen corresponding path program 88 times [2021-07-13 20:53:51,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:51,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420376631] [2021-07-13 20:53:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:51,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:51,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420376631] [2021-07-13 20:53:51,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420376631] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:51,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:51,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:51,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116698122] [2021-07-13 20:53:51,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:51,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:51,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:51,237 INFO L87 Difference]: Start difference. First operand 5333 states and 18440 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) [2021-07-13 20:53:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:54,705 INFO L93 Difference]: Finished difference Result 9823 states and 33613 transitions. [2021-07-13 20:53:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-13 20:53:54,706 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 [2021-07-13 20:53:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:54,728 INFO L225 Difference]: With dead ends: 9823 [2021-07-13 20:53:54,728 INFO L226 Difference]: Without dead ends: 9780 [2021-07-13 20:53:54,729 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3371 ImplicationChecksByTransitivity, 2229.6ms TimeCoverageRelationStatistics Valid=783, Invalid=9317, Unknown=0, NotChecked=0, Total=10100 [2021-07-13 20:53:54,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9780 states. [2021-07-13 20:53:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9780 to 5345. [2021-07-13 20:53:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5344 states have (on average 3.456961077844311) internal successors, (18474), 5344 states have internal predecessors, (18474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 18474 transitions. [2021-07-13 20:53:54,846 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 18474 transitions. Word has length 39 [2021-07-13 20:53:54,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:54,846 INFO L482 AbstractCegarLoop]: Abstraction has 5345 states and 18474 transitions. [2021-07-13 20:53:54,846 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) [2021-07-13 20:53:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 18474 transitions. [2021-07-13 20:53:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:54,854 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:54,854 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:54,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-07-13 20:53:54,854 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:54,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:54,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1888259526, now seen corresponding path program 89 times [2021-07-13 20:53:54,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:54,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016539192] [2021-07-13 20:53:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:55,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:55,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016539192] [2021-07-13 20:53:55,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016539192] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:55,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:55,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:55,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759070682] [2021-07-13 20:53:55,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:55,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:55,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:55,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:55,066 INFO L87 Difference]: Start difference. First operand 5345 states and 18474 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) [2021-07-13 20:53:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:53:58,955 INFO L93 Difference]: Finished difference Result 10921 states and 37303 transitions. [2021-07-13 20:53:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-07-13 20:53:58,955 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 [2021-07-13 20:53:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:53:58,979 INFO L225 Difference]: With dead ends: 10921 [2021-07-13 20:53:58,979 INFO L226 Difference]: Without dead ends: 10869 [2021-07-13 20:53:58,980 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 2476.3ms TimeCoverageRelationStatistics Valid=848, Invalid=10924, Unknown=0, NotChecked=0, Total=11772 [2021-07-13 20:53:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10869 states. [2021-07-13 20:53:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10869 to 5333. [2021-07-13 20:53:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5333 states, 5332 states have (on average 3.458364591147787) internal successors, (18440), 5332 states have internal predecessors, (18440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:53:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 18440 transitions. [2021-07-13 20:53:59,103 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 18440 transitions. Word has length 39 [2021-07-13 20:53:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:53:59,103 INFO L482 AbstractCegarLoop]: Abstraction has 5333 states and 18440 transitions. [2021-07-13 20:53:59,103 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) [2021-07-13 20:53:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 18440 transitions. [2021-07-13 20:53:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:53:59,111 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:53:59,111 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:53:59,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-07-13 20:53:59,111 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:53:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:53:59,112 INFO L82 PathProgramCache]: Analyzing trace with hash 810822346, now seen corresponding path program 90 times [2021-07-13 20:53:59,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:53:59,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329291993] [2021-07-13 20:53:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:53:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:53:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:53:59,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:53:59,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329291993] [2021-07-13 20:53:59,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329291993] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:53:59,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:53:59,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:53:59,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422683020] [2021-07-13 20:53:59,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:53:59,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:53:59,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:53:59,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:53:59,303 INFO L87 Difference]: Start difference. First operand 5333 states and 18440 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) [2021-07-13 20:54:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:01,781 INFO L93 Difference]: Finished difference Result 9138 states and 31246 transitions. [2021-07-13 20:54:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-13 20:54:01,781 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 [2021-07-13 20:54:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:01,801 INFO L225 Difference]: With dead ends: 9138 [2021-07-13 20:54:01,801 INFO L226 Difference]: Without dead ends: 9083 [2021-07-13 20:54:01,801 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 1413.3ms TimeCoverageRelationStatistics Valid=475, Invalid=5075, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 20:54:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2021-07-13 20:54:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 5335. [2021-07-13 20:54:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 5334 states have (on average 3.4576302962129732) internal successors, (18443), 5334 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 18443 transitions. [2021-07-13 20:54:01,907 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 18443 transitions. Word has length 39 [2021-07-13 20:54:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:01,908 INFO L482 AbstractCegarLoop]: Abstraction has 5335 states and 18443 transitions. [2021-07-13 20:54:01,908 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) [2021-07-13 20:54:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 18443 transitions. [2021-07-13 20:54:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:01,916 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:01,916 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:01,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-07-13 20:54:01,916 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:01,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1983474568, now seen corresponding path program 91 times [2021-07-13 20:54:01,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:01,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130475779] [2021-07-13 20:54:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:02,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:02,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130475779] [2021-07-13 20:54:02,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130475779] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:02,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:02,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:02,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040874321] [2021-07-13 20:54:02,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:02,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:02,117 INFO L87 Difference]: Start difference. First operand 5335 states and 18443 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) [2021-07-13 20:54:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:05,127 INFO L93 Difference]: Finished difference Result 10291 states and 35128 transitions. [2021-07-13 20:54:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:54:05,132 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 [2021-07-13 20:54:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:05,154 INFO L225 Difference]: With dead ends: 10291 [2021-07-13 20:54:05,155 INFO L226 Difference]: Without dead ends: 10165 [2021-07-13 20:54:05,155 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 1701.8ms TimeCoverageRelationStatistics Valid=553, Invalid=6419, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 20:54:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2021-07-13 20:54:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 5415. [2021-07-13 20:54:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5414 states have (on average 3.4599187292205396) internal successors, (18732), 5414 states have internal predecessors, (18732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 18732 transitions. [2021-07-13 20:54:05,278 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 18732 transitions. Word has length 39 [2021-07-13 20:54:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:05,278 INFO L482 AbstractCegarLoop]: Abstraction has 5415 states and 18732 transitions. [2021-07-13 20:54:05,278 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) [2021-07-13 20:54:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 18732 transitions. [2021-07-13 20:54:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:05,287 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:05,287 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:05,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-07-13 20:54:05,287 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:05,287 INFO L82 PathProgramCache]: Analyzing trace with hash -69444406, now seen corresponding path program 92 times [2021-07-13 20:54:05,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:05,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96314898] [2021-07-13 20:54:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:05,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:05,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96314898] [2021-07-13 20:54:05,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96314898] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:05,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:05,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:05,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590722974] [2021-07-13 20:54:05,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:05,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:05,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:05,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:05,488 INFO L87 Difference]: Start difference. First operand 5415 states and 18732 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) [2021-07-13 20:54:11,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:11,764 INFO L93 Difference]: Finished difference Result 12683 states and 43069 transitions. [2021-07-13 20:54:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-07-13 20:54:11,765 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 [2021-07-13 20:54:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:11,795 INFO L225 Difference]: With dead ends: 12683 [2021-07-13 20:54:11,795 INFO L226 Difference]: Without dead ends: 12546 [2021-07-13 20:54:11,797 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7828 ImplicationChecksByTransitivity, 3580.5ms TimeCoverageRelationStatistics Valid=1236, Invalid=19644, Unknown=0, NotChecked=0, Total=20880 [2021-07-13 20:54:11,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12546 states. [2021-07-13 20:54:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12546 to 5427. [2021-07-13 20:54:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 5426 states have (on average 3.4600073719130116) internal successors, (18774), 5426 states have internal predecessors, (18774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 18774 transitions. [2021-07-13 20:54:11,948 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 18774 transitions. Word has length 39 [2021-07-13 20:54:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:11,949 INFO L482 AbstractCegarLoop]: Abstraction has 5427 states and 18774 transitions. [2021-07-13 20:54:11,949 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) [2021-07-13 20:54:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 18774 transitions. [2021-07-13 20:54:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:11,958 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:11,958 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:11,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-07-13 20:54:11,958 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1564335306, now seen corresponding path program 93 times [2021-07-13 20:54:11,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:11,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411013604] [2021-07-13 20:54:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:12,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:12,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411013604] [2021-07-13 20:54:12,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411013604] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:12,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:12,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:12,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566519739] [2021-07-13 20:54:12,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:12,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:12,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:12,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:12,159 INFO L87 Difference]: Start difference. First operand 5427 states and 18774 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) [2021-07-13 20:54:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:15,542 INFO L93 Difference]: Finished difference Result 9928 states and 33931 transitions. [2021-07-13 20:54:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-07-13 20:54:15,543 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 [2021-07-13 20:54:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:15,565 INFO L225 Difference]: With dead ends: 9928 [2021-07-13 20:54:15,565 INFO L226 Difference]: Without dead ends: 9864 [2021-07-13 20:54:15,566 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 2171.7ms TimeCoverageRelationStatistics Valid=733, Invalid=8773, Unknown=0, NotChecked=0, Total=9506 [2021-07-13 20:54:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9864 states. [2021-07-13 20:54:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9864 to 5419. [2021-07-13 20:54:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 3.4599483204134365) internal successors, (18746), 5418 states have internal predecessors, (18746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 18746 transitions. [2021-07-13 20:54:15,687 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 18746 transitions. Word has length 39 [2021-07-13 20:54:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:15,687 INFO L482 AbstractCegarLoop]: Abstraction has 5419 states and 18746 transitions. [2021-07-13 20:54:15,687 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) [2021-07-13 20:54:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 18746 transitions. [2021-07-13 20:54:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:15,697 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:15,697 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:15,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-07-13 20:54:15,697 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:15,697 INFO L82 PathProgramCache]: Analyzing trace with hash -645851736, now seen corresponding path program 94 times [2021-07-13 20:54:15,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:15,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433894318] [2021-07-13 20:54:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:15,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:15,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433894318] [2021-07-13 20:54:15,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433894318] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:15,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:15,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:15,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169682453] [2021-07-13 20:54:15,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:15,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:15,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:15,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:15,889 INFO L87 Difference]: Start difference. First operand 5419 states and 18746 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) [2021-07-13 20:54:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:18,244 INFO L93 Difference]: Finished difference Result 9190 states and 31423 transitions. [2021-07-13 20:54:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-13 20:54:18,245 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 [2021-07-13 20:54:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:18,266 INFO L225 Difference]: With dead ends: 9190 [2021-07-13 20:54:18,267 INFO L226 Difference]: Without dead ends: 9135 [2021-07-13 20:54:18,267 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 1319.0ms TimeCoverageRelationStatistics Valid=430, Invalid=4682, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 20:54:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2021-07-13 20:54:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 5425. [2021-07-13 20:54:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5424 states have (on average 3.458517699115044) internal successors, (18759), 5424 states have internal predecessors, (18759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 18759 transitions. [2021-07-13 20:54:18,387 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 18759 transitions. Word has length 39 [2021-07-13 20:54:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:18,388 INFO L482 AbstractCegarLoop]: Abstraction has 5425 states and 18759 transitions. [2021-07-13 20:54:18,388 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) [2021-07-13 20:54:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 18759 transitions. [2021-07-13 20:54:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:18,396 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:18,396 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:18,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-07-13 20:54:18,396 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash 526800486, now seen corresponding path program 95 times [2021-07-13 20:54:18,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:18,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725394526] [2021-07-13 20:54:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:18,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:18,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725394526] [2021-07-13 20:54:18,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725394526] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:18,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:18,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:18,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219088448] [2021-07-13 20:54:18,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:18,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:18,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:18,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:18,669 INFO L87 Difference]: Start difference. First operand 5425 states and 18759 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) [2021-07-13 20:54:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:21,703 INFO L93 Difference]: Finished difference Result 10376 states and 35342 transitions. [2021-07-13 20:54:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 20:54:21,707 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 [2021-07-13 20:54:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:21,728 INFO L225 Difference]: With dead ends: 10376 [2021-07-13 20:54:21,728 INFO L226 Difference]: Without dead ends: 10316 [2021-07-13 20:54:21,729 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 1811.1ms TimeCoverageRelationStatistics Valid=568, Invalid=6742, Unknown=0, NotChecked=0, Total=7310 [2021-07-13 20:54:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10316 states. [2021-07-13 20:54:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10316 to 5423. [2021-07-13 20:54:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5423 states, 5422 states have (on average 3.4588712652157874) internal successors, (18754), 5422 states have internal predecessors, (18754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 18754 transitions. [2021-07-13 20:54:21,849 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 18754 transitions. Word has length 39 [2021-07-13 20:54:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:21,849 INFO L482 AbstractCegarLoop]: Abstraction has 5423 states and 18754 transitions. [2021-07-13 20:54:21,849 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) [2021-07-13 20:54:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 18754 transitions. [2021-07-13 20:54:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:21,857 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:21,857 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:21,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-07-13 20:54:21,858 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:21,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1552766056, now seen corresponding path program 96 times [2021-07-13 20:54:21,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:21,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183202329] [2021-07-13 20:54:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:22,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:22,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183202329] [2021-07-13 20:54:22,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183202329] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:22,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:22,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:54:22,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42539597] [2021-07-13 20:54:22,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:54:22,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:22,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:54:22,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:54:22,038 INFO L87 Difference]: Start difference. First operand 5423 states and 18754 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) [2021-07-13 20:54:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:24,624 INFO L93 Difference]: Finished difference Result 10137 states and 34744 transitions. [2021-07-13 20:54:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-07-13 20:54:24,624 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 [2021-07-13 20:54:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:24,647 INFO L225 Difference]: With dead ends: 10137 [2021-07-13 20:54:24,647 INFO L226 Difference]: Without dead ends: 10061 [2021-07-13 20:54:24,648 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 1437.5ms TimeCoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2021-07-13 20:54:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10061 states. [2021-07-13 20:54:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10061 to 5431. [2021-07-13 20:54:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5430 states have (on average 3.4567219152854514) internal successors, (18770), 5430 states have internal predecessors, (18770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 18770 transitions. [2021-07-13 20:54:24,822 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 18770 transitions. Word has length 39 [2021-07-13 20:54:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:24,822 INFO L482 AbstractCegarLoop]: Abstraction has 5431 states and 18770 transitions. [2021-07-13 20:54:24,823 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) [2021-07-13 20:54:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 18770 transitions. [2021-07-13 20:54:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:24,831 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:24,831 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:24,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-07-13 20:54:24,831 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:24,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:24,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1724147628, now seen corresponding path program 97 times [2021-07-13 20:54:24,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:24,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362461040] [2021-07-13 20:54:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:25,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:25,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362461040] [2021-07-13 20:54:25,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362461040] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:25,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:25,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:25,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657382748] [2021-07-13 20:54:25,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:25,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:25,027 INFO L87 Difference]: Start difference. First operand 5431 states and 18770 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) [2021-07-13 20:54:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:27,961 INFO L93 Difference]: Finished difference Result 10263 states and 35075 transitions. [2021-07-13 20:54:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-07-13 20:54:27,961 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 [2021-07-13 20:54:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:27,984 INFO L225 Difference]: With dead ends: 10263 [2021-07-13 20:54:27,984 INFO L226 Difference]: Without dead ends: 10177 [2021-07-13 20:54:27,985 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1654.4ms TimeCoverageRelationStatistics Valid=540, Invalid=6266, Unknown=0, NotChecked=0, Total=6806 [2021-07-13 20:54:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10177 states. [2021-07-13 20:54:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10177 to 5411. [2021-07-13 20:54:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5410 states have (on average 3.4598890942698706) internal successors, (18718), 5410 states have internal predecessors, (18718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 18718 transitions. [2021-07-13 20:54:28,119 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 18718 transitions. Word has length 39 [2021-07-13 20:54:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:28,119 INFO L482 AbstractCegarLoop]: Abstraction has 5411 states and 18718 transitions. [2021-07-13 20:54:28,119 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) [2021-07-13 20:54:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 18718 transitions. [2021-07-13 20:54:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:28,129 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:28,129 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:28,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-07-13 20:54:28,129 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1829471118, now seen corresponding path program 98 times [2021-07-13 20:54:28,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:28,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299976103] [2021-07-13 20:54:28,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:28,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:28,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299976103] [2021-07-13 20:54:28,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299976103] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:28,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:28,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:54:28,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164902262] [2021-07-13 20:54:28,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:54:28,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:28,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:54:28,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:54:28,307 INFO L87 Difference]: Start difference. First operand 5411 states and 18718 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) [2021-07-13 20:54:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:32,151 INFO L93 Difference]: Finished difference Result 10604 states and 36407 transitions. [2021-07-13 20:54:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-07-13 20:54:32,152 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 [2021-07-13 20:54:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:32,174 INFO L225 Difference]: With dead ends: 10604 [2021-07-13 20:54:32,174 INFO L226 Difference]: Without dead ends: 10460 [2021-07-13 20:54:32,175 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 2082.3ms TimeCoverageRelationStatistics Valid=690, Invalid=8430, Unknown=0, NotChecked=0, Total=9120 [2021-07-13 20:54:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2021-07-13 20:54:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 5619. [2021-07-13 20:54:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5619 states, 5618 states have (on average 3.450694197223211) internal successors, (19386), 5618 states have internal predecessors, (19386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 19386 transitions. [2021-07-13 20:54:32,306 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 19386 transitions. Word has length 39 [2021-07-13 20:54:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:32,306 INFO L482 AbstractCegarLoop]: Abstraction has 5619 states and 19386 transitions. [2021-07-13 20:54:32,306 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) [2021-07-13 20:54:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 19386 transitions. [2021-07-13 20:54:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:32,315 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:32,315 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:32,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-07-13 20:54:32,315 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:32,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1022604884, now seen corresponding path program 99 times [2021-07-13 20:54:32,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:32,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114230574] [2021-07-13 20:54:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:32,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:32,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114230574] [2021-07-13 20:54:32,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114230574] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:32,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:32,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:54:32,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649315184] [2021-07-13 20:54:32,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:54:32,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:54:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:54:32,496 INFO L87 Difference]: Start difference. First operand 5619 states and 19386 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) [2021-07-13 20:54:37,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:37,690 INFO L93 Difference]: Finished difference Result 12549 states and 42583 transitions. [2021-07-13 20:54:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-13 20:54:37,690 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 [2021-07-13 20:54:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:37,755 INFO L225 Difference]: With dead ends: 12549 [2021-07-13 20:54:37,755 INFO L226 Difference]: Without dead ends: 12413 [2021-07-13 20:54:37,756 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5893 ImplicationChecksByTransitivity, 3154.2ms TimeCoverageRelationStatistics Valid=1103, Invalid=14899, Unknown=0, NotChecked=0, Total=16002 [2021-07-13 20:54:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12413 states. [2021-07-13 20:54:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12413 to 5767. [2021-07-13 20:54:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 3.448664585501214) internal successors, (19885), 5766 states have internal predecessors, (19885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 19885 transitions. [2021-07-13 20:54:37,885 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 19885 transitions. Word has length 39 [2021-07-13 20:54:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:37,885 INFO L482 AbstractCegarLoop]: Abstraction has 5767 states and 19885 transitions. [2021-07-13 20:54:37,885 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) [2021-07-13 20:54:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 19885 transitions. [2021-07-13 20:54:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:37,894 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:37,894 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:37,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-07-13 20:54:37,894 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:37,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1491764110, now seen corresponding path program 100 times [2021-07-13 20:54:37,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:37,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691835167] [2021-07-13 20:54:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:38,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:38,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691835167] [2021-07-13 20:54:38,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691835167] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:38,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:38,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:54:38,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802038373] [2021-07-13 20:54:38,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:54:38,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:38,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:54:38,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:54:38,079 INFO L87 Difference]: Start difference. First operand 5767 states and 19885 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) [2021-07-13 20:54:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:43,500 INFO L93 Difference]: Finished difference Result 12984 states and 44180 transitions. [2021-07-13 20:54:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-07-13 20:54:43,501 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 [2021-07-13 20:54:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:43,530 INFO L225 Difference]: With dead ends: 12984 [2021-07-13 20:54:43,530 INFO L226 Difference]: Without dead ends: 12815 [2021-07-13 20:54:43,531 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6319 ImplicationChecksByTransitivity, 3288.4ms TimeCoverageRelationStatistics Valid=1152, Invalid=15878, Unknown=0, NotChecked=0, Total=17030 [2021-07-13 20:54:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2021-07-13 20:54:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 5851. [2021-07-13 20:54:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5850 states have (on average 3.4483760683760685) internal successors, (20173), 5850 states have internal predecessors, (20173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 20173 transitions. [2021-07-13 20:54:43,674 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 20173 transitions. Word has length 39 [2021-07-13 20:54:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:43,674 INFO L482 AbstractCegarLoop]: Abstraction has 5851 states and 20173 transitions. [2021-07-13 20:54:43,674 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) [2021-07-13 20:54:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 20173 transitions. [2021-07-13 20:54:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:43,683 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:43,683 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:43,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-07-13 20:54:43,683 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1082948494, now seen corresponding path program 101 times [2021-07-13 20:54:43,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:43,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196205452] [2021-07-13 20:54:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:43,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:43,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196205452] [2021-07-13 20:54:43,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196205452] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:43,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:43,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:54:43,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225522903] [2021-07-13 20:54:43,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:54:43,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:43,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:54:43,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:54:43,894 INFO L87 Difference]: Start difference. First operand 5851 states and 20173 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) [2021-07-13 20:54:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:49,807 INFO L93 Difference]: Finished difference Result 12513 states and 42749 transitions. [2021-07-13 20:54:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-07-13 20:54:49,808 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 [2021-07-13 20:54:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:49,837 INFO L225 Difference]: With dead ends: 12513 [2021-07-13 20:54:49,837 INFO L226 Difference]: Without dead ends: 12266 [2021-07-13 20:54:49,838 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6851 ImplicationChecksByTransitivity, 3473.4ms TimeCoverageRelationStatistics Valid=1151, Invalid=17209, Unknown=0, NotChecked=0, Total=18360 [2021-07-13 20:54:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2021-07-13 20:54:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 5419. [2021-07-13 20:54:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 3.4562569213732006) internal successors, (18726), 5418 states have internal predecessors, (18726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 18726 transitions. [2021-07-13 20:54:49,991 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 18726 transitions. Word has length 39 [2021-07-13 20:54:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:49,991 INFO L482 AbstractCegarLoop]: Abstraction has 5419 states and 18726 transitions. [2021-07-13 20:54:49,991 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) [2021-07-13 20:54:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 18726 transitions. [2021-07-13 20:54:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:50,000 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:50,000 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:50,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-07-13 20:54:50,000 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:50,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1554264236, now seen corresponding path program 102 times [2021-07-13 20:54:50,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:50,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674522012] [2021-07-13 20:54:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:50,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:50,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674522012] [2021-07-13 20:54:50,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674522012] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:50,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:50,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:50,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579055841] [2021-07-13 20:54:50,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:50,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:50,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:50,202 INFO L87 Difference]: Start difference. First operand 5419 states and 18726 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) [2021-07-13 20:54:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:54:54,372 INFO L93 Difference]: Finished difference Result 10652 states and 36464 transitions. [2021-07-13 20:54:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-07-13 20:54:54,372 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 [2021-07-13 20:54:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:54:54,398 INFO L225 Difference]: With dead ends: 10652 [2021-07-13 20:54:54,398 INFO L226 Difference]: Without dead ends: 10585 [2021-07-13 20:54:54,399 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 2263.2ms TimeCoverageRelationStatistics Valid=755, Invalid=9957, Unknown=0, NotChecked=0, Total=10712 [2021-07-13 20:54:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2021-07-13 20:54:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 5437. [2021-07-13 20:54:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.4536423841059603) internal successors, (18774), 5436 states have internal predecessors, (18774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:54:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18774 transitions. [2021-07-13 20:54:54,530 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18774 transitions. Word has length 39 [2021-07-13 20:54:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:54:54,530 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18774 transitions. [2021-07-13 20:54:54,530 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) [2021-07-13 20:54:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18774 transitions. [2021-07-13 20:54:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:54:54,538 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:54:54,538 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:54:54,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-07-13 20:54:54,538 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:54:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:54:54,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1297811766, now seen corresponding path program 103 times [2021-07-13 20:54:54,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:54:54,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447412543] [2021-07-13 20:54:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:54:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:54:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:54:54,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:54:54,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447412543] [2021-07-13 20:54:54,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447412543] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:54:54,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:54:54,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:54:54,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196698991] [2021-07-13 20:54:54,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:54:54,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:54:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:54:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:54:54,766 INFO L87 Difference]: Start difference. First operand 5437 states and 18774 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) [2021-07-13 20:55:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:00,349 INFO L93 Difference]: Finished difference Result 12169 states and 41355 transitions. [2021-07-13 20:55:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-07-13 20:55:00,350 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 [2021-07-13 20:55:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:00,377 INFO L225 Difference]: With dead ends: 12169 [2021-07-13 20:55:00,377 INFO L226 Difference]: Without dead ends: 12126 [2021-07-13 20:55:00,378 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6673 ImplicationChecksByTransitivity, 3422.7ms TimeCoverageRelationStatistics Valid=1175, Invalid=16915, Unknown=0, NotChecked=0, Total=18090 [2021-07-13 20:55:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12126 states. [2021-07-13 20:55:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12126 to 5461. [2021-07-13 20:55:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5461 states, 5460 states have (on average 3.451831501831502) internal successors, (18847), 5460 states have internal predecessors, (18847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 18847 transitions. [2021-07-13 20:55:00,506 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 18847 transitions. Word has length 39 [2021-07-13 20:55:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:00,506 INFO L482 AbstractCegarLoop]: Abstraction has 5461 states and 18847 transitions. [2021-07-13 20:55:00,506 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) [2021-07-13 20:55:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 18847 transitions. [2021-07-13 20:55:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:00,514 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:00,514 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:00,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-07-13 20:55:00,514 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:00,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:00,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1216557228, now seen corresponding path program 104 times [2021-07-13 20:55:00,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:00,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504162917] [2021-07-13 20:55:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:00,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:00,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504162917] [2021-07-13 20:55:00,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504162917] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:00,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:00,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:00,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114387463] [2021-07-13 20:55:00,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:00,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:00,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:00,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:00,704 INFO L87 Difference]: Start difference. First operand 5461 states and 18847 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) [2021-07-13 20:55:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:06,510 INFO L93 Difference]: Finished difference Result 12677 states and 43230 transitions. [2021-07-13 20:55:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-07-13 20:55:06,510 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 [2021-07-13 20:55:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:06,537 INFO L225 Difference]: With dead ends: 12677 [2021-07-13 20:55:06,537 INFO L226 Difference]: Without dead ends: 12601 [2021-07-13 20:55:06,538 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6890 ImplicationChecksByTransitivity, 3513.9ms TimeCoverageRelationStatistics Valid=1205, Invalid=17427, Unknown=0, NotChecked=0, Total=18632 [2021-07-13 20:55:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-07-13 20:55:06,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 5431. [2021-07-13 20:55:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5430 states have (on average 3.4556169429097605) internal successors, (18764), 5430 states have internal predecessors, (18764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 18764 transitions. [2021-07-13 20:55:06,669 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 18764 transitions. Word has length 39 [2021-07-13 20:55:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:06,669 INFO L482 AbstractCegarLoop]: Abstraction has 5431 states and 18764 transitions. [2021-07-13 20:55:06,669 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) [2021-07-13 20:55:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 18764 transitions. [2021-07-13 20:55:06,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:06,678 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:06,678 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:06,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-07-13 20:55:06,678 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:06,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1563134030, now seen corresponding path program 105 times [2021-07-13 20:55:06,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:06,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031148704] [2021-07-13 20:55:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:06,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:06,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031148704] [2021-07-13 20:55:06,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031148704] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:06,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:06,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:06,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35091820] [2021-07-13 20:55:06,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:06,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:06,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:06,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:06,869 INFO L87 Difference]: Start difference. First operand 5431 states and 18764 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) [2021-07-13 20:55:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:09,404 INFO L93 Difference]: Finished difference Result 9270 states and 32084 transitions. [2021-07-13 20:55:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 20:55:09,405 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 [2021-07-13 20:55:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:09,423 INFO L225 Difference]: With dead ends: 9270 [2021-07-13 20:55:09,424 INFO L226 Difference]: Without dead ends: 9203 [2021-07-13 20:55:09,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 1289.3ms TimeCoverageRelationStatistics Valid=418, Invalid=4694, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 20:55:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9203 states. [2021-07-13 20:55:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9203 to 5449. [2021-07-13 20:55:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5448 states have (on average 3.4519089574155655) internal successors, (18806), 5448 states have internal predecessors, (18806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18806 transitions. [2021-07-13 20:55:09,576 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18806 transitions. Word has length 39 [2021-07-13 20:55:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:09,577 INFO L482 AbstractCegarLoop]: Abstraction has 5449 states and 18806 transitions. [2021-07-13 20:55:09,577 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) [2021-07-13 20:55:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18806 transitions. [2021-07-13 20:55:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:09,584 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:09,584 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:09,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-07-13 20:55:09,584 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:09,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1461759922, now seen corresponding path program 106 times [2021-07-13 20:55:09,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:09,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193079760] [2021-07-13 20:55:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:09,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:09,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193079760] [2021-07-13 20:55:09,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193079760] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:09,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:09,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:09,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475024703] [2021-07-13 20:55:09,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:09,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:09,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:09,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:09,779 INFO L87 Difference]: Start difference. First operand 5449 states and 18806 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) [2021-07-13 20:55:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:12,027 INFO L93 Difference]: Finished difference Result 8819 states and 30408 transitions. [2021-07-13 20:55:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 20:55:12,028 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 [2021-07-13 20:55:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:12,044 INFO L225 Difference]: With dead ends: 8819 [2021-07-13 20:55:12,044 INFO L226 Difference]: Without dead ends: 8744 [2021-07-13 20:55:12,045 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1199.7ms TimeCoverageRelationStatistics Valid=395, Invalid=4297, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 20:55:12,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8744 states. [2021-07-13 20:55:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8744 to 5437. [2021-07-13 20:55:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.4536423841059603) internal successors, (18774), 5436 states have internal predecessors, (18774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18774 transitions. [2021-07-13 20:55:12,141 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18774 transitions. Word has length 39 [2021-07-13 20:55:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:12,141 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18774 transitions. [2021-07-13 20:55:12,141 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) [2021-07-13 20:55:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18774 transitions. [2021-07-13 20:55:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:12,149 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:12,149 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:12,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-07-13 20:55:12,149 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash -580243766, now seen corresponding path program 107 times [2021-07-13 20:55:12,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:12,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963607761] [2021-07-13 20:55:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:12,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:12,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963607761] [2021-07-13 20:55:12,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963607761] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:12,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:12,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:12,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865310500] [2021-07-13 20:55:12,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:12,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:12,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:12,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:12,341 INFO L87 Difference]: Start difference. First operand 5437 states and 18774 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) [2021-07-13 20:55:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:15,671 INFO L93 Difference]: Finished difference Result 9692 states and 33271 transitions. [2021-07-13 20:55:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-07-13 20:55:15,671 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 [2021-07-13 20:55:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:15,691 INFO L225 Difference]: With dead ends: 9692 [2021-07-13 20:55:15,691 INFO L226 Difference]: Without dead ends: 9649 [2021-07-13 20:55:15,692 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 2085.7ms TimeCoverageRelationStatistics Valid=717, Invalid=8789, Unknown=0, NotChecked=0, Total=9506 [2021-07-13 20:55:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-13 20:55:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 5452. [2021-07-13 20:55:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5452 states, 5451 states have (on average 3.4525775087139974) internal successors, (18820), 5451 states have internal predecessors, (18820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 18820 transitions. [2021-07-13 20:55:15,830 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 18820 transitions. Word has length 39 [2021-07-13 20:55:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:15,830 INFO L482 AbstractCegarLoop]: Abstraction has 5452 states and 18820 transitions. [2021-07-13 20:55:15,830 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) [2021-07-13 20:55:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 18820 transitions. [2021-07-13 20:55:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:15,838 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:15,838 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:15,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-07-13 20:55:15,838 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1934125228, now seen corresponding path program 108 times [2021-07-13 20:55:15,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:15,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49040192] [2021-07-13 20:55:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:16,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:16,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49040192] [2021-07-13 20:55:16,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49040192] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:16,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:16,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:16,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695355458] [2021-07-13 20:55:16,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:16,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:16,030 INFO L87 Difference]: Start difference. First operand 5452 states and 18820 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) [2021-07-13 20:55:19,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:19,875 INFO L93 Difference]: Finished difference Result 10742 states and 36805 transitions. [2021-07-13 20:55:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-07-13 20:55:19,876 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 [2021-07-13 20:55:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:19,898 INFO L225 Difference]: With dead ends: 10742 [2021-07-13 20:55:19,898 INFO L226 Difference]: Without dead ends: 10690 [2021-07-13 20:55:19,899 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 2373.4ms TimeCoverageRelationStatistics Valid=782, Invalid=10348, Unknown=0, NotChecked=0, Total=11130 [2021-07-13 20:55:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10690 states. [2021-07-13 20:55:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10690 to 5446. [2021-07-13 20:55:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5445 states have (on average 3.453443526170799) internal successors, (18804), 5445 states have internal predecessors, (18804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 18804 transitions. [2021-07-13 20:55:20,041 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 18804 transitions. Word has length 39 [2021-07-13 20:55:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:20,041 INFO L482 AbstractCegarLoop]: Abstraction has 5446 states and 18804 transitions. [2021-07-13 20:55:20,042 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) [2021-07-13 20:55:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 18804 transitions. [2021-07-13 20:55:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:20,049 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:20,049 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:20,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-07-13 20:55:20,049 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2117662996, now seen corresponding path program 109 times [2021-07-13 20:55:20,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:20,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192155914] [2021-07-13 20:55:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:20,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:20,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192155914] [2021-07-13 20:55:20,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192155914] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:20,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:20,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:20,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943175727] [2021-07-13 20:55:20,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:20,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:20,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:20,239 INFO L87 Difference]: Start difference. First operand 5446 states and 18804 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) [2021-07-13 20:55:22,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:22,571 INFO L93 Difference]: Finished difference Result 8972 states and 30755 transitions. [2021-07-13 20:55:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 20:55:22,572 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 [2021-07-13 20:55:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:22,589 INFO L225 Difference]: With dead ends: 8972 [2021-07-13 20:55:22,590 INFO L226 Difference]: Without dead ends: 8909 [2021-07-13 20:55:22,590 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 1257.0ms TimeCoverageRelationStatistics Valid=422, Invalid=4690, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 20:55:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2021-07-13 20:55:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 5449. [2021-07-13 20:55:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5448 states have (on average 3.452459618208517) internal successors, (18809), 5448 states have internal predecessors, (18809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18809 transitions. [2021-07-13 20:55:22,693 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18809 transitions. Word has length 39 [2021-07-13 20:55:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:22,693 INFO L482 AbstractCegarLoop]: Abstraction has 5449 states and 18809 transitions. [2021-07-13 20:55:22,693 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) [2021-07-13 20:55:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18809 transitions. [2021-07-13 20:55:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:22,700 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:22,700 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:22,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-07-13 20:55:22,701 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:22,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:22,701 INFO L82 PathProgramCache]: Analyzing trace with hash 249662542, now seen corresponding path program 110 times [2021-07-13 20:55:22,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:22,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759267183] [2021-07-13 20:55:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:22,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:22,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759267183] [2021-07-13 20:55:22,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759267183] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:22,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:22,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:22,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991574821] [2021-07-13 20:55:22,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:22,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:22,892 INFO L87 Difference]: Start difference. First operand 5449 states and 18809 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) [2021-07-13 20:55:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:25,769 INFO L93 Difference]: Finished difference Result 10049 states and 34391 transitions. [2021-07-13 20:55:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-13 20:55:25,769 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 [2021-07-13 20:55:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:25,790 INFO L225 Difference]: With dead ends: 10049 [2021-07-13 20:55:25,790 INFO L226 Difference]: Without dead ends: 9898 [2021-07-13 20:55:25,791 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1564.5ms TimeCoverageRelationStatistics Valid=495, Invalid=5985, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 20:55:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2021-07-13 20:55:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 5438. [2021-07-13 20:55:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5437 states have (on average 3.454662497700938) internal successors, (18783), 5437 states have internal predecessors, (18783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 18783 transitions. [2021-07-13 20:55:25,907 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 18783 transitions. Word has length 39 [2021-07-13 20:55:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:25,907 INFO L482 AbstractCegarLoop]: Abstraction has 5438 states and 18783 transitions. [2021-07-13 20:55:25,907 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) [2021-07-13 20:55:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 18783 transitions. [2021-07-13 20:55:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:25,915 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:25,915 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:25,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-07-13 20:55:25,916 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:25,916 INFO L82 PathProgramCache]: Analyzing trace with hash 667908174, now seen corresponding path program 111 times [2021-07-13 20:55:25,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:25,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870872902] [2021-07-13 20:55:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:26,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:26,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870872902] [2021-07-13 20:55:26,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870872902] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:26,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:26,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:26,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450505638] [2021-07-13 20:55:26,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:26,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:26,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:26,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:26,140 INFO L87 Difference]: Start difference. First operand 5438 states and 18783 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) [2021-07-13 20:55:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:32,449 INFO L93 Difference]: Finished difference Result 12395 states and 42218 transitions. [2021-07-13 20:55:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-07-13 20:55:32,449 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 [2021-07-13 20:55:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:32,476 INFO L225 Difference]: With dead ends: 12395 [2021-07-13 20:55:32,476 INFO L226 Difference]: Without dead ends: 12258 [2021-07-13 20:55:32,478 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7572 ImplicationChecksByTransitivity, 3675.9ms TimeCoverageRelationStatistics Valid=1206, Invalid=19100, Unknown=0, NotChecked=0, Total=20306 [2021-07-13 20:55:32,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12258 states. [2021-07-13 20:55:32,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12258 to 5444. [2021-07-13 20:55:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5443 states have (on average 3.4537938636781185) internal successors, (18799), 5443 states have internal predecessors, (18799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 18799 transitions. [2021-07-13 20:55:32,648 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 18799 transitions. Word has length 39 [2021-07-13 20:55:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:32,648 INFO L482 AbstractCegarLoop]: Abstraction has 5444 states and 18799 transitions. [2021-07-13 20:55:32,648 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) [2021-07-13 20:55:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 18799 transitions. [2021-07-13 20:55:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:32,656 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:32,656 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:32,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-07-13 20:55:32,656 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:32,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:32,656 INFO L82 PathProgramCache]: Analyzing trace with hash -73043924, now seen corresponding path program 112 times [2021-07-13 20:55:32,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:32,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465954673] [2021-07-13 20:55:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:32,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:32,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465954673] [2021-07-13 20:55:32,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465954673] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:32,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:32,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:32,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686814584] [2021-07-13 20:55:32,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:32,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:32,862 INFO L87 Difference]: Start difference. First operand 5444 states and 18799 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) [2021-07-13 20:55:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:36,119 INFO L93 Difference]: Finished difference Result 9713 states and 33303 transitions. [2021-07-13 20:55:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-07-13 20:55:36,119 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 [2021-07-13 20:55:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:36,139 INFO L225 Difference]: With dead ends: 9713 [2021-07-13 20:55:36,139 INFO L226 Difference]: Without dead ends: 9649 [2021-07-13 20:55:36,140 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2910 ImplicationChecksByTransitivity, 2025.6ms TimeCoverageRelationStatistics Valid=677, Invalid=8253, Unknown=0, NotChecked=0, Total=8930 [2021-07-13 20:55:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-13 20:55:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 5450. [2021-07-13 20:55:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 3.4529271425949717) internal successors, (18815), 5449 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 18815 transitions. [2021-07-13 20:55:36,246 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 18815 transitions. Word has length 39 [2021-07-13 20:55:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:36,246 INFO L482 AbstractCegarLoop]: Abstraction has 5450 states and 18815 transitions. [2021-07-13 20:55:36,246 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) [2021-07-13 20:55:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 18815 transitions. [2021-07-13 20:55:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:36,253 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:36,253 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:36,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-07-13 20:55:36,253 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1610463154, now seen corresponding path program 113 times [2021-07-13 20:55:36,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:36,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633204476] [2021-07-13 20:55:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:36,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:36,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633204476] [2021-07-13 20:55:36,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633204476] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:36,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:36,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:36,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606014340] [2021-07-13 20:55:36,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:36,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:36,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:36,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:36,446 INFO L87 Difference]: Start difference. First operand 5450 states and 18815 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) [2021-07-13 20:55:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:38,688 INFO L93 Difference]: Finished difference Result 9005 states and 30847 transitions. [2021-07-13 20:55:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 20:55:38,688 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 [2021-07-13 20:55:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:38,707 INFO L225 Difference]: With dead ends: 9005 [2021-07-13 20:55:38,707 INFO L226 Difference]: Without dead ends: 8942 [2021-07-13 20:55:38,708 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1202.5ms TimeCoverageRelationStatistics Valid=387, Invalid=4305, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 20:55:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8942 states. [2021-07-13 20:55:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8942 to 5459. [2021-07-13 20:55:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5458 states have (on average 3.451080982044705) internal successors, (18836), 5458 states have internal predecessors, (18836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 18836 transitions. [2021-07-13 20:55:38,843 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 18836 transitions. Word has length 39 [2021-07-13 20:55:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:38,843 INFO L482 AbstractCegarLoop]: Abstraction has 5459 states and 18836 transitions. [2021-07-13 20:55:38,843 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) [2021-07-13 20:55:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 18836 transitions. [2021-07-13 20:55:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:38,851 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:38,852 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:38,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-07-13 20:55:38,852 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash 756862384, now seen corresponding path program 114 times [2021-07-13 20:55:38,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:38,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749438858] [2021-07-13 20:55:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:39,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:39,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749438858] [2021-07-13 20:55:39,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749438858] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:39,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:39,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:39,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579657556] [2021-07-13 20:55:39,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:39,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:39,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:39,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:39,054 INFO L87 Difference]: Start difference. First operand 5459 states and 18836 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) [2021-07-13 20:55:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:41,974 INFO L93 Difference]: Finished difference Result 10156 states and 34664 transitions. [2021-07-13 20:55:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:55:41,974 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 [2021-07-13 20:55:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:41,995 INFO L225 Difference]: With dead ends: 10156 [2021-07-13 20:55:41,995 INFO L226 Difference]: Without dead ends: 10086 [2021-07-13 20:55:41,996 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 1616.5ms TimeCoverageRelationStatistics Valid=515, Invalid=6291, Unknown=0, NotChecked=0, Total=6806 [2021-07-13 20:55:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10086 states. [2021-07-13 20:55:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 5456. [2021-07-13 20:55:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5456 states, 5455 states have (on average 3.451512373968836) internal successors, (18828), 5455 states have internal predecessors, (18828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5456 states to 5456 states and 18828 transitions. [2021-07-13 20:55:42,114 INFO L78 Accepts]: Start accepts. Automaton has 5456 states and 18828 transitions. Word has length 39 [2021-07-13 20:55:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:42,114 INFO L482 AbstractCegarLoop]: Abstraction has 5456 states and 18828 transitions. [2021-07-13 20:55:42,114 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) [2021-07-13 20:55:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5456 states and 18828 transitions. [2021-07-13 20:55:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:42,122 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:42,122 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:42,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-07-13 20:55:42,122 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1258821816, now seen corresponding path program 115 times [2021-07-13 20:55:42,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:42,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896649386] [2021-07-13 20:55:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:42,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:42,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896649386] [2021-07-13 20:55:42,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896649386] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:42,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:42,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:55:42,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318619213] [2021-07-13 20:55:42,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:55:42,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:42,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:55:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:55:42,301 INFO L87 Difference]: Start difference. First operand 5456 states and 18828 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) [2021-07-13 20:55:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:44,822 INFO L93 Difference]: Finished difference Result 9853 states and 33899 transitions. [2021-07-13 20:55:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-07-13 20:55:44,823 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 [2021-07-13 20:55:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:44,845 INFO L225 Difference]: With dead ends: 9853 [2021-07-13 20:55:44,845 INFO L226 Difference]: Without dead ends: 9777 [2021-07-13 20:55:44,845 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1345.5ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 20:55:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9777 states. [2021-07-13 20:55:44,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9777 to 5470. [2021-07-13 20:55:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5470 states, 5469 states have (on average 3.4481623697202415) internal successors, (18858), 5469 states have internal predecessors, (18858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 18858 transitions. [2021-07-13 20:55:44,992 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 18858 transitions. Word has length 39 [2021-07-13 20:55:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:44,993 INFO L482 AbstractCegarLoop]: Abstraction has 5470 states and 18858 transitions. [2021-07-13 20:55:44,993 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) [2021-07-13 20:55:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 18858 transitions. [2021-07-13 20:55:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:45,001 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:45,001 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:45,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-07-13 20:55:45,001 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:45,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1488223146, now seen corresponding path program 116 times [2021-07-13 20:55:45,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:45,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514471305] [2021-07-13 20:55:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:45,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:45,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514471305] [2021-07-13 20:55:45,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514471305] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:45,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:45,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:45,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133132230] [2021-07-13 20:55:45,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:45,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:45,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:45,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:45,192 INFO L87 Difference]: Start difference. First operand 5470 states and 18858 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) [2021-07-13 20:55:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:48,037 INFO L93 Difference]: Finished difference Result 10000 states and 34295 transitions. [2021-07-13 20:55:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 20:55:48,037 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 [2021-07-13 20:55:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:48,058 INFO L225 Difference]: With dead ends: 10000 [2021-07-13 20:55:48,059 INFO L226 Difference]: Without dead ends: 9889 [2021-07-13 20:55:48,059 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1535.5ms TimeCoverageRelationStatistics Valid=504, Invalid=5976, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 20:55:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2021-07-13 20:55:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 5438. [2021-07-13 20:55:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5437 states have (on average 3.455030347618172) internal successors, (18785), 5437 states have internal predecessors, (18785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 18785 transitions. [2021-07-13 20:55:48,172 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 18785 transitions. Word has length 39 [2021-07-13 20:55:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:48,172 INFO L482 AbstractCegarLoop]: Abstraction has 5438 states and 18785 transitions. [2021-07-13 20:55:48,172 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) [2021-07-13 20:55:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 18785 transitions. [2021-07-13 20:55:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:48,180 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:48,180 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:48,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-07-13 20:55:48,180 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:48,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1132034068, now seen corresponding path program 117 times [2021-07-13 20:55:48,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:48,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496251624] [2021-07-13 20:55:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:48,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:48,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496251624] [2021-07-13 20:55:48,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496251624] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:48,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:48,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:48,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981973605] [2021-07-13 20:55:48,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:48,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:48,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:48,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:48,374 INFO L87 Difference]: Start difference. First operand 5438 states and 18785 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) [2021-07-13 20:55:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:51,822 INFO L93 Difference]: Finished difference Result 10965 states and 37273 transitions. [2021-07-13 20:55:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 20:55:51,822 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 [2021-07-13 20:55:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:51,845 INFO L225 Difference]: With dead ends: 10965 [2021-07-13 20:55:51,846 INFO L226 Difference]: Without dead ends: 10835 [2021-07-13 20:55:51,846 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2585 ImplicationChecksByTransitivity, 1866.5ms TimeCoverageRelationStatistics Valid=647, Invalid=7543, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 20:55:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2021-07-13 20:55:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 5645. [2021-07-13 20:55:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 3.4466690290574062) internal successors, (19453), 5644 states have internal predecessors, (19453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 19453 transitions. [2021-07-13 20:55:51,978 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 19453 transitions. Word has length 39 [2021-07-13 20:55:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:51,978 INFO L482 AbstractCegarLoop]: Abstraction has 5645 states and 19453 transitions. [2021-07-13 20:55:51,978 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) [2021-07-13 20:55:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 19453 transitions. [2021-07-13 20:55:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:51,987 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:51,987 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:51,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-07-13 20:55:51,987 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:51,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:51,987 INFO L82 PathProgramCache]: Analyzing trace with hash 761614474, now seen corresponding path program 118 times [2021-07-13 20:55:51,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:51,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292674639] [2021-07-13 20:55:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:52,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:52,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292674639] [2021-07-13 20:55:52,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292674639] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:52,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:52,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:52,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670709020] [2021-07-13 20:55:52,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:52,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:52,178 INFO L87 Difference]: Start difference. First operand 5645 states and 19453 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) [2021-07-13 20:55:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:55:54,901 INFO L93 Difference]: Finished difference Result 9638 states and 32961 transitions. [2021-07-13 20:55:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 20:55:54,901 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 [2021-07-13 20:55:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:55:54,921 INFO L225 Difference]: With dead ends: 9638 [2021-07-13 20:55:54,921 INFO L226 Difference]: Without dead ends: 9575 [2021-07-13 20:55:54,922 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 1548.8ms TimeCoverageRelationStatistics Valid=559, Invalid=5921, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 20:55:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2021-07-13 20:55:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 5645. [2021-07-13 20:55:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 3.4459603118355777) internal successors, (19449), 5644 states have internal predecessors, (19449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:55:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 19449 transitions. [2021-07-13 20:55:55,034 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 19449 transitions. Word has length 39 [2021-07-13 20:55:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:55:55,034 INFO L482 AbstractCegarLoop]: Abstraction has 5645 states and 19449 transitions. [2021-07-13 20:55:55,035 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) [2021-07-13 20:55:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 19449 transitions. [2021-07-13 20:55:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:55:55,043 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:55:55,043 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:55:55,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-07-13 20:55:55,043 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:55:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:55:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash 984972090, now seen corresponding path program 119 times [2021-07-13 20:55:55,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:55:55,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583309151] [2021-07-13 20:55:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:55:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:55:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:55:55,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:55:55,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583309151] [2021-07-13 20:55:55,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583309151] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:55:55,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:55:55,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:55:55,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43257809] [2021-07-13 20:55:55,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:55:55,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:55:55,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:55:55,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:55:55,280 INFO L87 Difference]: Start difference. First operand 5645 states and 19449 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) [2021-07-13 20:56:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:00,140 INFO L93 Difference]: Finished difference Result 12438 states and 41785 transitions. [2021-07-13 20:56:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-07-13 20:56:00,140 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 [2021-07-13 20:56:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:00,166 INFO L225 Difference]: With dead ends: 12438 [2021-07-13 20:56:00,167 INFO L226 Difference]: Without dead ends: 12242 [2021-07-13 20:56:00,168 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6246 ImplicationChecksByTransitivity, 3131.6ms TimeCoverageRelationStatistics Valid=1157, Invalid=15873, Unknown=0, NotChecked=0, Total=17030 [2021-07-13 20:56:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12242 states. [2021-07-13 20:56:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12242 to 5991. [2021-07-13 20:56:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5991 states, 5990 states have (on average 3.46661101836394) internal successors, (20765), 5990 states have internal predecessors, (20765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5991 states to 5991 states and 20765 transitions. [2021-07-13 20:56:00,313 INFO L78 Accepts]: Start accepts. Automaton has 5991 states and 20765 transitions. Word has length 39 [2021-07-13 20:56:00,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:00,313 INFO L482 AbstractCegarLoop]: Abstraction has 5991 states and 20765 transitions. [2021-07-13 20:56:00,313 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) [2021-07-13 20:56:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5991 states and 20765 transitions. [2021-07-13 20:56:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:00,323 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:00,323 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:00,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-07-13 20:56:00,323 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash -795626212, now seen corresponding path program 120 times [2021-07-13 20:56:00,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:00,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101060832] [2021-07-13 20:56:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:00,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:00,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101060832] [2021-07-13 20:56:00,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101060832] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:00,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:00,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:00,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197267497] [2021-07-13 20:56:00,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:00,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:00,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:00,512 INFO L87 Difference]: Start difference. First operand 5991 states and 20765 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) [2021-07-13 20:56:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:05,724 INFO L93 Difference]: Finished difference Result 13160 states and 44326 transitions. [2021-07-13 20:56:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-07-13 20:56:05,725 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 [2021-07-13 20:56:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:05,754 INFO L225 Difference]: With dead ends: 13160 [2021-07-13 20:56:05,754 INFO L226 Difference]: Without dead ends: 12985 [2021-07-13 20:56:05,755 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6915 ImplicationChecksByTransitivity, 3277.1ms TimeCoverageRelationStatistics Valid=1227, Invalid=17405, Unknown=0, NotChecked=0, Total=18632 [2021-07-13 20:56:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2021-07-13 20:56:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 6003. [2021-07-13 20:56:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 6002 states have (on average 3.4680106631122958) internal successors, (20815), 6002 states have internal predecessors, (20815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 20815 transitions. [2021-07-13 20:56:05,930 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 20815 transitions. Word has length 39 [2021-07-13 20:56:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:05,930 INFO L482 AbstractCegarLoop]: Abstraction has 6003 states and 20815 transitions. [2021-07-13 20:56:05,930 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) [2021-07-13 20:56:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 20815 transitions. [2021-07-13 20:56:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:05,939 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:05,939 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:05,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-07-13 20:56:05,939 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1903455660, now seen corresponding path program 121 times [2021-07-13 20:56:05,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:05,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109708036] [2021-07-13 20:56:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:06,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:06,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109708036] [2021-07-13 20:56:06,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109708036] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:06,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:06,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:06,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085992463] [2021-07-13 20:56:06,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:06,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:06,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:06,129 INFO L87 Difference]: Start difference. First operand 6003 states and 20815 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) [2021-07-13 20:56:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:08,935 INFO L93 Difference]: Finished difference Result 10096 states and 34556 transitions. [2021-07-13 20:56:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:56:08,936 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 [2021-07-13 20:56:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:08,957 INFO L225 Difference]: With dead ends: 10096 [2021-07-13 20:56:08,957 INFO L226 Difference]: Without dead ends: 10041 [2021-07-13 20:56:08,958 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 1616.4ms TimeCoverageRelationStatistics Valid=595, Invalid=6377, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 20:56:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10041 states. [2021-07-13 20:56:09,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10041 to 6005. [2021-07-13 20:56:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 6004 states have (on average 3.4673550966022653) internal successors, (20818), 6004 states have internal predecessors, (20818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 20818 transitions. [2021-07-13 20:56:09,081 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 20818 transitions. Word has length 39 [2021-07-13 20:56:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:09,081 INFO L482 AbstractCegarLoop]: Abstraction has 6005 states and 20818 transitions. [2021-07-13 20:56:09,081 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) [2021-07-13 20:56:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 20818 transitions. [2021-07-13 20:56:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:09,090 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:09,090 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:09,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-07-13 20:56:09,090 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:09,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1218859414, now seen corresponding path program 122 times [2021-07-13 20:56:09,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:09,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363153740] [2021-07-13 20:56:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:09,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:09,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363153740] [2021-07-13 20:56:09,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363153740] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:09,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:09,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:09,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639560160] [2021-07-13 20:56:09,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:09,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:09,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:09,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:09,286 INFO L87 Difference]: Start difference. First operand 6005 states and 20818 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) [2021-07-13 20:56:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:12,572 INFO L93 Difference]: Finished difference Result 11129 states and 38066 transitions. [2021-07-13 20:56:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 20:56:12,572 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 [2021-07-13 20:56:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:12,595 INFO L225 Difference]: With dead ends: 11129 [2021-07-13 20:56:12,595 INFO L226 Difference]: Without dead ends: 11083 [2021-07-13 20:56:12,595 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 1907.8ms TimeCoverageRelationStatistics Valid=654, Invalid=7718, Unknown=0, NotChecked=0, Total=8372 [2021-07-13 20:56:12,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2021-07-13 20:56:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 6009. [2021-07-13 20:56:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 3.4663781624500665) internal successors, (20826), 6008 states have internal predecessors, (20826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 20826 transitions. [2021-07-13 20:56:12,723 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 20826 transitions. Word has length 39 [2021-07-13 20:56:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:12,723 INFO L482 AbstractCegarLoop]: Abstraction has 6009 states and 20826 transitions. [2021-07-13 20:56:12,723 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) [2021-07-13 20:56:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 20826 transitions. [2021-07-13 20:56:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:12,731 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:12,732 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:12,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-07-13 20:56:12,732 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:12,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1466325576, now seen corresponding path program 123 times [2021-07-13 20:56:12,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:12,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349518130] [2021-07-13 20:56:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:12,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:12,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349518130] [2021-07-13 20:56:12,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349518130] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:12,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:12,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:12,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117692214] [2021-07-13 20:56:12,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:12,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:12,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:12,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:12,956 INFO L87 Difference]: Start difference. First operand 6009 states and 20826 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) [2021-07-13 20:56:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:15,762 INFO L93 Difference]: Finished difference Result 9952 states and 34247 transitions. [2021-07-13 20:56:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 20:56:15,762 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 [2021-07-13 20:56:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:15,783 INFO L225 Difference]: With dead ends: 9952 [2021-07-13 20:56:15,783 INFO L226 Difference]: Without dead ends: 9899 [2021-07-13 20:56:15,784 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 1678.8ms TimeCoverageRelationStatistics Valid=602, Invalid=6370, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 20:56:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2021-07-13 20:56:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 5999. [2021-07-13 20:56:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5998 states have (on average 3.4689896632210737) internal successors, (20807), 5998 states have internal predecessors, (20807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 20807 transitions. [2021-07-13 20:56:15,935 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 20807 transitions. Word has length 39 [2021-07-13 20:56:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:15,936 INFO L482 AbstractCegarLoop]: Abstraction has 5999 states and 20807 transitions. [2021-07-13 20:56:15,936 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) [2021-07-13 20:56:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 20807 transitions. [2021-07-13 20:56:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:15,945 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:15,945 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:15,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-07-13 20:56:15,945 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -173000518, now seen corresponding path program 124 times [2021-07-13 20:56:15,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:15,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978324377] [2021-07-13 20:56:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:16,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:16,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978324377] [2021-07-13 20:56:16,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978324377] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:16,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:16,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:16,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696498621] [2021-07-13 20:56:16,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:16,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:16,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:16,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:16,140 INFO L87 Difference]: Start difference. First operand 5999 states and 20807 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) [2021-07-13 20:56:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:19,603 INFO L93 Difference]: Finished difference Result 11369 states and 38815 transitions. [2021-07-13 20:56:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 20:56:19,604 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 [2021-07-13 20:56:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:19,629 INFO L225 Difference]: With dead ends: 11369 [2021-07-13 20:56:19,630 INFO L226 Difference]: Without dead ends: 11302 [2021-07-13 20:56:19,630 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 1836.4ms TimeCoverageRelationStatistics Valid=634, Invalid=7556, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 20:56:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11302 states. [2021-07-13 20:56:19,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11302 to 6017. [2021-07-13 20:56:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 6016 states have (on average 3.465591755319149) internal successors, (20849), 6016 states have internal predecessors, (20849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 20849 transitions. [2021-07-13 20:56:19,774 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 20849 transitions. Word has length 39 [2021-07-13 20:56:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:19,774 INFO L482 AbstractCegarLoop]: Abstraction has 6017 states and 20849 transitions. [2021-07-13 20:56:19,775 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) [2021-07-13 20:56:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 20849 transitions. [2021-07-13 20:56:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:19,784 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:19,784 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:19,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-07-13 20:56:19,784 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1097072826, now seen corresponding path program 125 times [2021-07-13 20:56:19,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:19,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275858192] [2021-07-13 20:56:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:20,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:20,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275858192] [2021-07-13 20:56:20,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275858192] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:20,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:20,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:20,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502619336] [2021-07-13 20:56:20,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:20,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:20,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:20,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:20,007 INFO L87 Difference]: Start difference. First operand 6017 states and 20849 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) [2021-07-13 20:56:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:22,748 INFO L93 Difference]: Finished difference Result 10113 states and 34632 transitions. [2021-07-13 20:56:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 20:56:22,749 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 [2021-07-13 20:56:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:22,769 INFO L225 Difference]: With dead ends: 10113 [2021-07-13 20:56:22,769 INFO L226 Difference]: Without dead ends: 10038 [2021-07-13 20:56:22,770 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 1582.3ms TimeCoverageRelationStatistics Valid=546, Invalid=5934, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 20:56:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2021-07-13 20:56:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 6017. [2021-07-13 20:56:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 6016 states have (on average 3.464594414893617) internal successors, (20843), 6016 states have internal predecessors, (20843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 20843 transitions. [2021-07-13 20:56:22,887 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 20843 transitions. Word has length 39 [2021-07-13 20:56:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:22,887 INFO L482 AbstractCegarLoop]: Abstraction has 6017 states and 20843 transitions. [2021-07-13 20:56:22,887 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) [2021-07-13 20:56:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 20843 transitions. [2021-07-13 20:56:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:22,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:22,896 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:22,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-07-13 20:56:22,896 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:22,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1978588982, now seen corresponding path program 126 times [2021-07-13 20:56:22,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:22,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200686238] [2021-07-13 20:56:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:23,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:23,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200686238] [2021-07-13 20:56:23,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200686238] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:23,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:23,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:23,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038296683] [2021-07-13 20:56:23,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:23,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:23,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:23,087 INFO L87 Difference]: Start difference. First operand 6017 states and 20843 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) [2021-07-13 20:56:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:27,877 INFO L93 Difference]: Finished difference Result 12421 states and 41792 transitions. [2021-07-13 20:56:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-07-13 20:56:27,877 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 [2021-07-13 20:56:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:27,902 INFO L225 Difference]: With dead ends: 12421 [2021-07-13 20:56:27,902 INFO L226 Difference]: Without dead ends: 12254 [2021-07-13 20:56:27,903 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6236 ImplicationChecksByTransitivity, 3025.3ms TimeCoverageRelationStatistics Valid=1144, Invalid=15886, Unknown=0, NotChecked=0, Total=17030 [2021-07-13 20:56:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2021-07-13 20:56:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 6026. [2021-07-13 20:56:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 3.4635684647302907) internal successors, (20868), 6025 states have internal predecessors, (20868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 20868 transitions. [2021-07-13 20:56:28,091 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 20868 transitions. Word has length 39 [2021-07-13 20:56:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:28,091 INFO L482 AbstractCegarLoop]: Abstraction has 6026 states and 20868 transitions. [2021-07-13 20:56:28,091 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) [2021-07-13 20:56:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 20868 transitions. [2021-07-13 20:56:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:28,100 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:28,100 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:28,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-07-13 20:56:28,101 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:28,101 INFO L82 PathProgramCache]: Analyzing trace with hash 197990680, now seen corresponding path program 127 times [2021-07-13 20:56:28,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:28,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586253475] [2021-07-13 20:56:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:28,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:28,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586253475] [2021-07-13 20:56:28,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586253475] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:28,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:28,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:28,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985717904] [2021-07-13 20:56:28,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:28,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:28,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:28,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:28,294 INFO L87 Difference]: Start difference. First operand 6026 states and 20868 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) [2021-07-13 20:56:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:33,551 INFO L93 Difference]: Finished difference Result 12965 states and 43816 transitions. [2021-07-13 20:56:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-07-13 20:56:33,551 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 [2021-07-13 20:56:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:33,577 INFO L225 Difference]: With dead ends: 12965 [2021-07-13 20:56:33,577 INFO L226 Difference]: Without dead ends: 12831 [2021-07-13 20:56:33,578 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7028 ImplicationChecksByTransitivity, 3329.4ms TimeCoverageRelationStatistics Valid=1224, Invalid=17682, Unknown=0, NotChecked=0, Total=18906 [2021-07-13 20:56:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2021-07-13 20:56:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 5962. [2021-07-13 20:56:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5961 states have (on average 3.462170776715316) internal successors, (20638), 5961 states have internal predecessors, (20638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 20638 transitions. [2021-07-13 20:56:33,709 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 20638 transitions. Word has length 39 [2021-07-13 20:56:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:33,709 INFO L482 AbstractCegarLoop]: Abstraction has 5962 states and 20638 transitions. [2021-07-13 20:56:33,709 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) [2021-07-13 20:56:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 20638 transitions. [2021-07-13 20:56:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:33,717 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:33,717 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:33,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-07-13 20:56:33,717 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:33,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:33,718 INFO L82 PathProgramCache]: Analyzing trace with hash 441169752, now seen corresponding path program 128 times [2021-07-13 20:56:33,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:33,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406992448] [2021-07-13 20:56:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:33,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:33,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406992448] [2021-07-13 20:56:33,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406992448] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:33,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:33,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:33,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726632430] [2021-07-13 20:56:33,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:33,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:33,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:33,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:33,909 INFO L87 Difference]: Start difference. First operand 5962 states and 20638 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) [2021-07-13 20:56:36,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:36,723 INFO L93 Difference]: Finished difference Result 10072 states and 34346 transitions. [2021-07-13 20:56:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:56:36,723 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 [2021-07-13 20:56:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:36,745 INFO L225 Difference]: With dead ends: 10072 [2021-07-13 20:56:36,745 INFO L226 Difference]: Without dead ends: 10009 [2021-07-13 20:56:36,746 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 1578.9ms TimeCoverageRelationStatistics Valid=574, Invalid=6398, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 20:56:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10009 states. [2021-07-13 20:56:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10009 to 5965. [2021-07-13 20:56:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5965 states, 5964 states have (on average 3.461267605633803) internal successors, (20643), 5964 states have internal predecessors, (20643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5965 states to 5965 states and 20643 transitions. [2021-07-13 20:56:36,869 INFO L78 Accepts]: Start accepts. Automaton has 5965 states and 20643 transitions. Word has length 39 [2021-07-13 20:56:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:36,870 INFO L482 AbstractCegarLoop]: Abstraction has 5965 states and 20643 transitions. [2021-07-13 20:56:36,870 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) [2021-07-13 20:56:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5965 states and 20643 transitions. [2021-07-13 20:56:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:36,879 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:36,879 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:36,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-07-13 20:56:36,879 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1486472006, now seen corresponding path program 129 times [2021-07-13 20:56:36,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:36,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543770878] [2021-07-13 20:56:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:37,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:37,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543770878] [2021-07-13 20:56:37,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543770878] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:37,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:37,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:37,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126138489] [2021-07-13 20:56:37,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:37,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:37,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:37,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:37,067 INFO L87 Difference]: Start difference. First operand 5965 states and 20643 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) [2021-07-13 20:56:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:40,336 INFO L93 Difference]: Finished difference Result 11071 states and 37791 transitions. [2021-07-13 20:56:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 20:56:40,337 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 [2021-07-13 20:56:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:40,359 INFO L225 Difference]: With dead ends: 11071 [2021-07-13 20:56:40,359 INFO L226 Difference]: Without dead ends: 11025 [2021-07-13 20:56:40,360 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2671 ImplicationChecksByTransitivity, 1835.5ms TimeCoverageRelationStatistics Valid=629, Invalid=7743, Unknown=0, NotChecked=0, Total=8372 [2021-07-13 20:56:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11025 states. [2021-07-13 20:56:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11025 to 5972. [2021-07-13 20:56:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 5971 states have (on average 3.4597219896164795) internal successors, (20658), 5971 states have internal predecessors, (20658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 20658 transitions. [2021-07-13 20:56:40,514 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 20658 transitions. Word has length 39 [2021-07-13 20:56:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:40,514 INFO L482 AbstractCegarLoop]: Abstraction has 5972 states and 20658 transitions. [2021-07-13 20:56:40,514 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) [2021-07-13 20:56:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 20658 transitions. [2021-07-13 20:56:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:40,522 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:40,522 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:40,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-07-13 20:56:40,523 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1373427800, now seen corresponding path program 130 times [2021-07-13 20:56:40,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:40,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186288149] [2021-07-13 20:56:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:40,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:40,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186288149] [2021-07-13 20:56:40,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186288149] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:40,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:40,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:40,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32387328] [2021-07-13 20:56:40,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:40,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:40,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:40,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:40,721 INFO L87 Difference]: Start difference. First operand 5972 states and 20658 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) [2021-07-13 20:56:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:43,548 INFO L93 Difference]: Finished difference Result 9716 states and 33428 transitions. [2021-07-13 20:56:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-13 20:56:43,549 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 [2021-07-13 20:56:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:43,570 INFO L225 Difference]: With dead ends: 9716 [2021-07-13 20:56:43,570 INFO L226 Difference]: Without dead ends: 9649 [2021-07-13 20:56:43,571 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 1598.0ms TimeCoverageRelationStatistics Valid=553, Invalid=6089, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 20:56:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-13 20:56:43,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 5956. [2021-07-13 20:56:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 5955 states have (on average 3.4636439966414776) internal successors, (20626), 5955 states have internal predecessors, (20626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20626 transitions. [2021-07-13 20:56:43,689 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20626 transitions. Word has length 39 [2021-07-13 20:56:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:43,689 INFO L482 AbstractCegarLoop]: Abstraction has 5956 states and 20626 transitions. [2021-07-13 20:56:43,689 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) [2021-07-13 20:56:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20626 transitions. [2021-07-13 20:56:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:43,698 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:43,698 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:43,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-07-13 20:56:43,698 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1286324824, now seen corresponding path program 131 times [2021-07-13 20:56:43,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:43,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590457693] [2021-07-13 20:56:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:43,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:43,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590457693] [2021-07-13 20:56:43,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590457693] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:43,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:43,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:43,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591220647] [2021-07-13 20:56:43,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:43,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:43,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:43,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:43,887 INFO L87 Difference]: Start difference. First operand 5956 states and 20626 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) [2021-07-13 20:56:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:46,829 INFO L93 Difference]: Finished difference Result 10007 states and 34455 transitions. [2021-07-13 20:56:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 20:56:46,829 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 [2021-07-13 20:56:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:46,849 INFO L225 Difference]: With dead ends: 10007 [2021-07-13 20:56:46,850 INFO L226 Difference]: Without dead ends: 9944 [2021-07-13 20:56:46,850 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 1559.0ms TimeCoverageRelationStatistics Valid=536, Invalid=6106, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 20:56:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9944 states. [2021-07-13 20:56:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9944 to 5948. [2021-07-13 20:56:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.4649403060366573) internal successors, (20606), 5947 states have internal predecessors, (20606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20606 transitions. [2021-07-13 20:56:46,960 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20606 transitions. Word has length 39 [2021-07-13 20:56:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:46,960 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20606 transitions. [2021-07-13 20:56:46,960 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) [2021-07-13 20:56:46,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20606 transitions. [2021-07-13 20:56:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:46,969 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:46,969 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:46,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-07-13 20:56:46,969 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:46,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1101031980, now seen corresponding path program 132 times [2021-07-13 20:56:46,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:46,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49731033] [2021-07-13 20:56:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:47,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:47,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49731033] [2021-07-13 20:56:47,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49731033] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:47,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:47,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:47,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58858495] [2021-07-13 20:56:47,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:47,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:47,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:47,161 INFO L87 Difference]: Start difference. First operand 5948 states and 20606 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) [2021-07-13 20:56:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:50,115 INFO L93 Difference]: Finished difference Result 10092 states and 34665 transitions. [2021-07-13 20:56:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 20:56:50,116 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 [2021-07-13 20:56:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:50,136 INFO L225 Difference]: With dead ends: 10092 [2021-07-13 20:56:50,136 INFO L226 Difference]: Without dead ends: 10017 [2021-07-13 20:56:50,136 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 1591.7ms TimeCoverageRelationStatistics Valid=536, Invalid=6106, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 20:56:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10017 states. [2021-07-13 20:56:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10017 to 5936. [2021-07-13 20:56:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.4668913226621734) internal successors, (20576), 5935 states have internal predecessors, (20576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20576 transitions. [2021-07-13 20:56:50,251 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20576 transitions. Word has length 39 [2021-07-13 20:56:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:50,251 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20576 transitions. [2021-07-13 20:56:50,251 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) [2021-07-13 20:56:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20576 transitions. [2021-07-13 20:56:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:50,259 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:50,259 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:50,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-07-13 20:56:50,259 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:50,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1101755816, now seen corresponding path program 133 times [2021-07-13 20:56:50,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:50,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000837856] [2021-07-13 20:56:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:50,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:50,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000837856] [2021-07-13 20:56:50,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000837856] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:50,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:50,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:50,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33484421] [2021-07-13 20:56:50,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:50,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:50,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:50,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:50,455 INFO L87 Difference]: Start difference. First operand 5936 states and 20576 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) [2021-07-13 20:56:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:53,568 INFO L93 Difference]: Finished difference Result 10741 states and 36799 transitions. [2021-07-13 20:56:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 20:56:53,569 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 [2021-07-13 20:56:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:53,592 INFO L225 Difference]: With dead ends: 10741 [2021-07-13 20:56:53,592 INFO L226 Difference]: Without dead ends: 10686 [2021-07-13 20:56:53,593 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1610.5ms TimeCoverageRelationStatistics Valid=563, Invalid=6577, Unknown=0, NotChecked=0, Total=7140 [2021-07-13 20:56:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2021-07-13 20:56:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 5938. [2021-07-13 20:56:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5938 states, 5937 states have (on average 3.466565605524676) internal successors, (20581), 5937 states have internal predecessors, (20581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 20581 transitions. [2021-07-13 20:56:53,723 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 20581 transitions. Word has length 39 [2021-07-13 20:56:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:53,723 INFO L482 AbstractCegarLoop]: Abstraction has 5938 states and 20581 transitions. [2021-07-13 20:56:53,723 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) [2021-07-13 20:56:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 20581 transitions. [2021-07-13 20:56:53,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:53,732 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:53,732 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:53,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-07-13 20:56:53,733 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:53,733 INFO L82 PathProgramCache]: Analyzing trace with hash -399118710, now seen corresponding path program 134 times [2021-07-13 20:56:53,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:53,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462096114] [2021-07-13 20:56:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:53,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:53,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462096114] [2021-07-13 20:56:53,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462096114] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:53,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:53,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:53,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136481024] [2021-07-13 20:56:53,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:53,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:53,926 INFO L87 Difference]: Start difference. First operand 5938 states and 20581 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) [2021-07-13 20:56:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:56:57,070 INFO L93 Difference]: Finished difference Result 10729 states and 36761 transitions. [2021-07-13 20:56:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 20:56:57,070 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 [2021-07-13 20:56:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:56:57,091 INFO L225 Difference]: With dead ends: 10729 [2021-07-13 20:56:57,092 INFO L226 Difference]: Without dead ends: 10656 [2021-07-13 20:56:57,092 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1632.5ms TimeCoverageRelationStatistics Valid=563, Invalid=6577, Unknown=0, NotChecked=0, Total=7140 [2021-07-13 20:56:57,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2021-07-13 20:56:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 5932. [2021-07-13 20:56:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5932 states, 5931 states have (on average 3.4678806272129488) internal successors, (20568), 5931 states have internal predecessors, (20568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:56:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 20568 transitions. [2021-07-13 20:56:57,215 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 20568 transitions. Word has length 39 [2021-07-13 20:56:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:56:57,215 INFO L482 AbstractCegarLoop]: Abstraction has 5932 states and 20568 transitions. [2021-07-13 20:56:57,215 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) [2021-07-13 20:56:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 20568 transitions. [2021-07-13 20:56:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:56:57,226 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:56:57,226 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:56:57,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-07-13 20:56:57,226 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:56:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:56:57,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1375455828, now seen corresponding path program 135 times [2021-07-13 20:56:57,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:56:57,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685216241] [2021-07-13 20:56:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:56:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:56:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:56:57,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:56:57,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685216241] [2021-07-13 20:56:57,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685216241] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:56:57,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:56:57,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:56:57,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467401878] [2021-07-13 20:56:57,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:56:57,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:56:57,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:56:57,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:56:57,414 INFO L87 Difference]: Start difference. First operand 5932 states and 20568 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) [2021-07-13 20:57:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:01,445 INFO L93 Difference]: Finished difference Result 12644 states and 42987 transitions. [2021-07-13 20:57:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-13 20:57:01,445 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 [2021-07-13 20:57:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:01,470 INFO L225 Difference]: With dead ends: 12644 [2021-07-13 20:57:01,470 INFO L226 Difference]: Without dead ends: 12526 [2021-07-13 20:57:01,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4303 ImplicationChecksByTransitivity, 2377.9ms TimeCoverageRelationStatistics Valid=884, Invalid=11548, Unknown=0, NotChecked=0, Total=12432 [2021-07-13 20:57:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2021-07-13 20:57:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 6322. [2021-07-13 20:57:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6322 states, 6321 states have (on average 3.479829140958709) internal successors, (21996), 6321 states have internal predecessors, (21996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:01,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 21996 transitions. [2021-07-13 20:57:01,604 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 21996 transitions. Word has length 39 [2021-07-13 20:57:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:01,604 INFO L482 AbstractCegarLoop]: Abstraction has 6322 states and 21996 transitions. [2021-07-13 20:57:01,604 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) [2021-07-13 20:57:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 21996 transitions. [2021-07-13 20:57:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:01,613 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:01,613 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:01,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-07-13 20:57:01,613 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash -202803606, now seen corresponding path program 136 times [2021-07-13 20:57:01,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:01,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015908000] [2021-07-13 20:57:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:01,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:01,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015908000] [2021-07-13 20:57:01,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015908000] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:01,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:01,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:01,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820173312] [2021-07-13 20:57:01,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:01,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:01,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:01,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:01,800 INFO L87 Difference]: Start difference. First operand 6322 states and 21996 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) [2021-07-13 20:57:06,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:06,029 INFO L93 Difference]: Finished difference Result 13538 states and 45942 transitions. [2021-07-13 20:57:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-07-13 20:57:06,029 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 [2021-07-13 20:57:06,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:06,056 INFO L225 Difference]: With dead ends: 13538 [2021-07-13 20:57:06,056 INFO L226 Difference]: Without dead ends: 13420 [2021-07-13 20:57:06,057 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4487 ImplicationChecksByTransitivity, 2443.7ms TimeCoverageRelationStatistics Valid=915, Invalid=11967, Unknown=0, NotChecked=0, Total=12882 [2021-07-13 20:57:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13420 states. [2021-07-13 20:57:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13420 to 6375. [2021-07-13 20:57:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6375 states, 6374 states have (on average 3.479290869155946) internal successors, (22177), 6374 states have internal predecessors, (22177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 22177 transitions. [2021-07-13 20:57:06,198 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 22177 transitions. Word has length 39 [2021-07-13 20:57:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:06,199 INFO L482 AbstractCegarLoop]: Abstraction has 6375 states and 22177 transitions. [2021-07-13 20:57:06,199 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) [2021-07-13 20:57:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 22177 transitions. [2021-07-13 20:57:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:06,208 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:06,208 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:06,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-07-13 20:57:06,208 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash -270548486, now seen corresponding path program 137 times [2021-07-13 20:57:06,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:06,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72920650] [2021-07-13 20:57:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:06,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:06,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72920650] [2021-07-13 20:57:06,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72920650] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:06,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:06,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:06,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878381811] [2021-07-13 20:57:06,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:06,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:06,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:06,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:06,396 INFO L87 Difference]: Start difference. First operand 6375 states and 22177 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) [2021-07-13 20:57:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:10,367 INFO L93 Difference]: Finished difference Result 12677 states and 43055 transitions. [2021-07-13 20:57:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-13 20:57:10,367 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 [2021-07-13 20:57:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:10,392 INFO L225 Difference]: With dead ends: 12677 [2021-07-13 20:57:10,392 INFO L226 Difference]: Without dead ends: 12612 [2021-07-13 20:57:10,393 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4304 ImplicationChecksByTransitivity, 2365.3ms TimeCoverageRelationStatistics Valid=873, Invalid=11559, Unknown=0, NotChecked=0, Total=12432 [2021-07-13 20:57:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12612 states. [2021-07-13 20:57:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12612 to 6376. [2021-07-13 20:57:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6376 states, 6375 states have (on average 3.478901960784314) internal successors, (22178), 6375 states have internal predecessors, (22178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 22178 transitions. [2021-07-13 20:57:10,530 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 22178 transitions. Word has length 39 [2021-07-13 20:57:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:10,530 INFO L482 AbstractCegarLoop]: Abstraction has 6376 states and 22178 transitions. [2021-07-13 20:57:10,530 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) [2021-07-13 20:57:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 22178 transitions. [2021-07-13 20:57:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:10,539 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:10,539 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:10,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-07-13 20:57:10,539 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:10,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2096777052, now seen corresponding path program 138 times [2021-07-13 20:57:10,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:10,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69378437] [2021-07-13 20:57:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:10,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:10,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69378437] [2021-07-13 20:57:10,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69378437] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:10,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:10,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:10,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897053226] [2021-07-13 20:57:10,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:10,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:10,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:10,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:10,729 INFO L87 Difference]: Start difference. First operand 6376 states and 22178 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) [2021-07-13 20:57:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:14,889 INFO L93 Difference]: Finished difference Result 13586 states and 46079 transitions. [2021-07-13 20:57:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-07-13 20:57:14,890 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 [2021-07-13 20:57:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:14,917 INFO L225 Difference]: With dead ends: 13586 [2021-07-13 20:57:14,918 INFO L226 Difference]: Without dead ends: 13436 [2021-07-13 20:57:14,919 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 2417.4ms TimeCoverageRelationStatistics Valid=894, Invalid=11762, Unknown=0, NotChecked=0, Total=12656 [2021-07-13 20:57:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13436 states. [2021-07-13 20:57:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13436 to 6336. [2021-07-13 20:57:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6335 states have (on average 3.4820836621941593) internal successors, (22059), 6335 states have internal predecessors, (22059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 22059 transitions. [2021-07-13 20:57:15,127 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 22059 transitions. Word has length 39 [2021-07-13 20:57:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:15,127 INFO L482 AbstractCegarLoop]: Abstraction has 6336 states and 22059 transitions. [2021-07-13 20:57:15,127 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) [2021-07-13 20:57:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 22059 transitions. [2021-07-13 20:57:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:15,136 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:15,136 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:15,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-07-13 20:57:15,136 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:15,137 INFO L82 PathProgramCache]: Analyzing trace with hash -131376330, now seen corresponding path program 139 times [2021-07-13 20:57:15,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:15,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509876394] [2021-07-13 20:57:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:15,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:15,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509876394] [2021-07-13 20:57:15,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509876394] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:15,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:15,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597011316] [2021-07-13 20:57:15,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:15,366 INFO L87 Difference]: Start difference. First operand 6336 states and 22059 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) [2021-07-13 20:57:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:20,447 INFO L93 Difference]: Finished difference Result 13288 states and 44858 transitions. [2021-07-13 20:57:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-07-13 20:57:20,448 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 [2021-07-13 20:57:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:20,480 INFO L225 Difference]: With dead ends: 13288 [2021-07-13 20:57:20,480 INFO L226 Difference]: Without dead ends: 13083 [2021-07-13 20:57:20,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5809 ImplicationChecksByTransitivity, 3056.4ms TimeCoverageRelationStatistics Valid=1074, Invalid=14928, Unknown=0, NotChecked=0, Total=16002 [2021-07-13 20:57:20,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13083 states. [2021-07-13 20:57:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13083 to 6470. [2021-07-13 20:57:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6469 states have (on average 3.488019786674911) internal successors, (22564), 6469 states have internal predecessors, (22564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 22564 transitions. [2021-07-13 20:57:20,647 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 22564 transitions. Word has length 39 [2021-07-13 20:57:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:20,647 INFO L482 AbstractCegarLoop]: Abstraction has 6470 states and 22564 transitions. [2021-07-13 20:57:20,647 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) [2021-07-13 20:57:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 22564 transitions. [2021-07-13 20:57:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:20,657 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:20,657 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:20,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-07-13 20:57:20,658 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash 787107240, now seen corresponding path program 140 times [2021-07-13 20:57:20,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:20,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54076288] [2021-07-13 20:57:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:20,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:20,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54076288] [2021-07-13 20:57:20,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54076288] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:20,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:20,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:20,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390538195] [2021-07-13 20:57:20,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:20,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:20,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:20,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:20,843 INFO L87 Difference]: Start difference. First operand 6470 states and 22564 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) [2021-07-13 20:57:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:23,968 INFO L93 Difference]: Finished difference Result 11615 states and 39719 transitions. [2021-07-13 20:57:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:57:23,969 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 [2021-07-13 20:57:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:23,991 INFO L225 Difference]: With dead ends: 11615 [2021-07-13 20:57:23,991 INFO L226 Difference]: Without dead ends: 11572 [2021-07-13 20:57:23,992 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 1621.8ms TimeCoverageRelationStatistics Valid=534, Invalid=6438, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 20:57:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11572 states. [2021-07-13 20:57:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11572 to 6482. [2021-07-13 20:57:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6482 states, 6481 states have (on average 3.486344699891992) internal successors, (22595), 6481 states have internal predecessors, (22595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 22595 transitions. [2021-07-13 20:57:24,120 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 22595 transitions. Word has length 39 [2021-07-13 20:57:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:24,121 INFO L482 AbstractCegarLoop]: Abstraction has 6482 states and 22595 transitions. [2021-07-13 20:57:24,121 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) [2021-07-13 20:57:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 22595 transitions. [2021-07-13 20:57:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:24,130 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:24,130 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:24,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-07-13 20:57:24,130 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:24,130 INFO L82 PathProgramCache]: Analyzing trace with hash 807255974, now seen corresponding path program 141 times [2021-07-13 20:57:24,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:24,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599474256] [2021-07-13 20:57:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:24,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:24,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599474256] [2021-07-13 20:57:24,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599474256] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:24,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:24,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:24,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995765418] [2021-07-13 20:57:24,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:24,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:24,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:24,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:24,321 INFO L87 Difference]: Start difference. First operand 6482 states and 22595 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) [2021-07-13 20:57:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:27,130 INFO L93 Difference]: Finished difference Result 10838 states and 37200 transitions. [2021-07-13 20:57:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 20:57:27,130 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 [2021-07-13 20:57:27,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:27,157 INFO L225 Difference]: With dead ends: 10838 [2021-07-13 20:57:27,158 INFO L226 Difference]: Without dead ends: 10795 [2021-07-13 20:57:27,158 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 1500.4ms TimeCoverageRelationStatistics Valid=490, Invalid=5672, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 20:57:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2021-07-13 20:57:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 6478. [2021-07-13 20:57:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6478 states, 6477 states have (on average 3.4869538366527713) internal successors, (22585), 6477 states have internal predecessors, (22585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6478 states to 6478 states and 22585 transitions. [2021-07-13 20:57:27,298 INFO L78 Accepts]: Start accepts. Automaton has 6478 states and 22585 transitions. Word has length 39 [2021-07-13 20:57:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:27,298 INFO L482 AbstractCegarLoop]: Abstraction has 6478 states and 22585 transitions. [2021-07-13 20:57:27,298 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) [2021-07-13 20:57:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6478 states and 22585 transitions. [2021-07-13 20:57:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:27,347 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:27,347 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:27,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-07-13 20:57:27,347 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1959759462, now seen corresponding path program 142 times [2021-07-13 20:57:27,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:27,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932996565] [2021-07-13 20:57:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:27,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:27,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932996565] [2021-07-13 20:57:27,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932996565] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:27,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:27,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:27,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481184485] [2021-07-13 20:57:27,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:27,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:27,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:27,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:27,545 INFO L87 Difference]: Start difference. First operand 6478 states and 22585 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) [2021-07-13 20:57:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:31,268 INFO L93 Difference]: Finished difference Result 12609 states and 42778 transitions. [2021-07-13 20:57:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-07-13 20:57:31,269 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 [2021-07-13 20:57:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:31,297 INFO L225 Difference]: With dead ends: 12609 [2021-07-13 20:57:31,297 INFO L226 Difference]: Without dead ends: 12428 [2021-07-13 20:57:31,298 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 2047.7ms TimeCoverageRelationStatistics Valid=692, Invalid=8428, Unknown=0, NotChecked=0, Total=9120 [2021-07-13 20:57:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12428 states. [2021-07-13 20:57:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12428 to 6615. [2021-07-13 20:57:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6614 states have (on average 3.487753250680375) internal successors, (23068), 6614 states have internal predecessors, (23068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 23068 transitions. [2021-07-13 20:57:31,518 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 23068 transitions. Word has length 39 [2021-07-13 20:57:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:31,519 INFO L482 AbstractCegarLoop]: Abstraction has 6615 states and 23068 transitions. [2021-07-13 20:57:31,519 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) [2021-07-13 20:57:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 23068 transitions. [2021-07-13 20:57:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:31,529 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:31,529 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:31,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-07-13 20:57:31,529 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:31,529 INFO L82 PathProgramCache]: Analyzing trace with hash -119807080, now seen corresponding path program 143 times [2021-07-13 20:57:31,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:31,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920827050] [2021-07-13 20:57:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:31,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:31,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920827050] [2021-07-13 20:57:31,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920827050] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:31,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:31,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:57:31,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999533751] [2021-07-13 20:57:31,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:57:31,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:57:31,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:57:31,703 INFO L87 Difference]: Start difference. First operand 6615 states and 23068 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) [2021-07-13 20:57:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:35,025 INFO L93 Difference]: Finished difference Result 12388 states and 42188 transitions. [2021-07-13 20:57:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-13 20:57:35,025 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 [2021-07-13 20:57:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:35,051 INFO L225 Difference]: With dead ends: 12388 [2021-07-13 20:57:35,051 INFO L226 Difference]: Without dead ends: 12312 [2021-07-13 20:57:35,052 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 1733.8ms TimeCoverageRelationStatistics Valid=593, Invalid=6889, Unknown=0, NotChecked=0, Total=7482 [2021-07-13 20:57:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12312 states. [2021-07-13 20:57:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12312 to 6623. [2021-07-13 20:57:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 3.485955904560556) internal successors, (23084), 6622 states have internal predecessors, (23084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 23084 transitions. [2021-07-13 20:57:35,207 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 23084 transitions. Word has length 39 [2021-07-13 20:57:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:35,207 INFO L482 AbstractCegarLoop]: Abstraction has 6623 states and 23084 transitions. [2021-07-13 20:57:35,207 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) [2021-07-13 20:57:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 23084 transitions. [2021-07-13 20:57:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:35,218 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:35,218 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:35,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-07-13 20:57:35,219 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:35,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1137860692, now seen corresponding path program 144 times [2021-07-13 20:57:35,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:35,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800775631] [2021-07-13 20:57:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:35,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:35,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800775631] [2021-07-13 20:57:35,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800775631] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:35,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:35,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:35,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652543067] [2021-07-13 20:57:35,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:35,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:35,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:35,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:35,410 INFO L87 Difference]: Start difference. First operand 6623 states and 23084 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) [2021-07-13 20:57:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:39,056 INFO L93 Difference]: Finished difference Result 12474 states and 42434 transitions. [2021-07-13 20:57:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-07-13 20:57:39,056 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 [2021-07-13 20:57:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:39,082 INFO L225 Difference]: With dead ends: 12474 [2021-07-13 20:57:39,082 INFO L226 Difference]: Without dead ends: 12404 [2021-07-13 20:57:39,082 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 1978.1ms TimeCoverageRelationStatistics Valid=667, Invalid=8075, Unknown=0, NotChecked=0, Total=8742 [2021-07-13 20:57:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12404 states. [2021-07-13 20:57:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12404 to 6611. [2021-07-13 20:57:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6611 states, 6610 states have (on average 3.4877458396369136) internal successors, (23054), 6610 states have internal predecessors, (23054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 23054 transitions. [2021-07-13 20:57:39,221 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 23054 transitions. Word has length 39 [2021-07-13 20:57:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:39,221 INFO L482 AbstractCegarLoop]: Abstraction has 6611 states and 23054 transitions. [2021-07-13 20:57:39,221 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) [2021-07-13 20:57:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 23054 transitions. [2021-07-13 20:57:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:39,231 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:39,231 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:39,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-07-13 20:57:39,231 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash -661472822, now seen corresponding path program 145 times [2021-07-13 20:57:39,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:39,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113924630] [2021-07-13 20:57:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:39,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:39,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113924630] [2021-07-13 20:57:39,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113924630] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:39,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:39,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:39,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499453645] [2021-07-13 20:57:39,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:39,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:39,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:39,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:39,422 INFO L87 Difference]: Start difference. First operand 6611 states and 23054 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) [2021-07-13 20:57:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:44,444 INFO L93 Difference]: Finished difference Result 13395 states and 45264 transitions. [2021-07-13 20:57:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-13 20:57:44,445 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 [2021-07-13 20:57:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:44,476 INFO L225 Difference]: With dead ends: 13395 [2021-07-13 20:57:44,477 INFO L226 Difference]: Without dead ends: 13235 [2021-07-13 20:57:44,477 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5698 ImplicationChecksByTransitivity, 2956.6ms TimeCoverageRelationStatistics Valid=1045, Invalid=14705, Unknown=0, NotChecked=0, Total=15750 [2021-07-13 20:57:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13235 states. [2021-07-13 20:57:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13235 to 6612. [2021-07-13 20:57:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6612 states, 6611 states have (on average 3.4881258508546362) internal successors, (23060), 6611 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 23060 transitions. [2021-07-13 20:57:44,633 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 23060 transitions. Word has length 39 [2021-07-13 20:57:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:44,633 INFO L482 AbstractCegarLoop]: Abstraction has 6612 states and 23060 transitions. [2021-07-13 20:57:44,633 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) [2021-07-13 20:57:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 23060 transitions. [2021-07-13 20:57:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:44,643 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:44,643 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:44,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-07-13 20:57:44,644 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2096075244, now seen corresponding path program 146 times [2021-07-13 20:57:44,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:44,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135049766] [2021-07-13 20:57:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:44,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:44,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135049766] [2021-07-13 20:57:44,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135049766] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:44,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:44,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:44,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259448496] [2021-07-13 20:57:44,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:44,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:44,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:44,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:44,870 INFO L87 Difference]: Start difference. First operand 6612 states and 23060 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) [2021-07-13 20:57:47,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:47,943 INFO L93 Difference]: Finished difference Result 11771 states and 40218 transitions. [2021-07-13 20:57:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 20:57:47,943 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 [2021-07-13 20:57:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:47,973 INFO L225 Difference]: With dead ends: 11771 [2021-07-13 20:57:47,974 INFO L226 Difference]: Without dead ends: 11728 [2021-07-13 20:57:47,974 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 1619.3ms TimeCoverageRelationStatistics Valid=518, Invalid=6454, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 20:57:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2021-07-13 20:57:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 6627. [2021-07-13 20:57:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 6626 states have (on average 3.4858134621189256) internal successors, (23097), 6626 states have internal predecessors, (23097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 23097 transitions. [2021-07-13 20:57:48,132 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 23097 transitions. Word has length 39 [2021-07-13 20:57:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:48,132 INFO L482 AbstractCegarLoop]: Abstraction has 6627 states and 23097 transitions. [2021-07-13 20:57:48,132 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) [2021-07-13 20:57:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 23097 transitions. [2021-07-13 20:57:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:48,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:48,142 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:48,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-07-13 20:57:48,142 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:48,142 INFO L82 PathProgramCache]: Analyzing trace with hash -448784916, now seen corresponding path program 147 times [2021-07-13 20:57:48,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:48,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325077316] [2021-07-13 20:57:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:48,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:48,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325077316] [2021-07-13 20:57:48,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325077316] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:48,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:48,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:48,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669390941] [2021-07-13 20:57:48,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:48,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:48,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:48,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:48,373 INFO L87 Difference]: Start difference. First operand 6627 states and 23097 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) [2021-07-13 20:57:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:51,206 INFO L93 Difference]: Finished difference Result 10795 states and 37107 transitions. [2021-07-13 20:57:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-07-13 20:57:51,206 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 [2021-07-13 20:57:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:51,227 INFO L225 Difference]: With dead ends: 10795 [2021-07-13 20:57:51,227 INFO L226 Difference]: Without dead ends: 10683 [2021-07-13 20:57:51,227 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1537.2ms TimeCoverageRelationStatistics Valid=464, Invalid=5542, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 20:57:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2021-07-13 20:57:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 6624. [2021-07-13 20:57:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6624 states, 6623 states have (on average 3.486637475464291) internal successors, (23092), 6623 states have internal predecessors, (23092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 23092 transitions. [2021-07-13 20:57:51,348 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 23092 transitions. Word has length 39 [2021-07-13 20:57:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:51,348 INFO L482 AbstractCegarLoop]: Abstraction has 6624 states and 23092 transitions. [2021-07-13 20:57:51,348 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) [2021-07-13 20:57:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 23092 transitions. [2021-07-13 20:57:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:51,357 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:51,357 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:51,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-07-13 20:57:51,358 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash 168433486, now seen corresponding path program 148 times [2021-07-13 20:57:51,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:51,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048347418] [2021-07-13 20:57:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:51,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:51,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048347418] [2021-07-13 20:57:51,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048347418] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:51,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:51,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:51,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405900335] [2021-07-13 20:57:51,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:51,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:51,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:51,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:51,544 INFO L87 Difference]: Start difference. First operand 6624 states and 23092 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) [2021-07-13 20:57:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:55,238 INFO L93 Difference]: Finished difference Result 12608 states and 42790 transitions. [2021-07-13 20:57:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-07-13 20:57:55,238 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 [2021-07-13 20:57:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:55,268 INFO L225 Difference]: With dead ends: 12608 [2021-07-13 20:57:55,268 INFO L226 Difference]: Without dead ends: 12451 [2021-07-13 20:57:55,269 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3040 ImplicationChecksByTransitivity, 1972.8ms TimeCoverageRelationStatistics Valid=680, Invalid=8632, Unknown=0, NotChecked=0, Total=9312 [2021-07-13 20:57:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2021-07-13 20:57:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 6521. [2021-07-13 20:57:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6521 states, 6520 states have (on average 3.488036809815951) internal successors, (22742), 6520 states have internal predecessors, (22742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6521 states to 6521 states and 22742 transitions. [2021-07-13 20:57:55,427 INFO L78 Accepts]: Start accepts. Automaton has 6521 states and 22742 transitions. Word has length 39 [2021-07-13 20:57:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:55,427 INFO L482 AbstractCegarLoop]: Abstraction has 6521 states and 22742 transitions. [2021-07-13 20:57:55,427 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) [2021-07-13 20:57:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6521 states and 22742 transitions. [2021-07-13 20:57:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:55,437 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:55,437 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:55,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-07-13 20:57:55,437 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1847250714, now seen corresponding path program 149 times [2021-07-13 20:57:55,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:55,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208990311] [2021-07-13 20:57:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:55,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:55,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208990311] [2021-07-13 20:57:55,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208990311] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:55,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:55,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 20:57:55,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566074810] [2021-07-13 20:57:55,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 20:57:55,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 20:57:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 20:57:55,650 INFO L87 Difference]: Start difference. First operand 6521 states and 22742 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) [2021-07-13 20:57:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:57:58,882 INFO L93 Difference]: Finished difference Result 12209 states and 41733 transitions. [2021-07-13 20:57:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-13 20:57:58,882 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 [2021-07-13 20:57:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:57:58,905 INFO L225 Difference]: With dead ends: 12209 [2021-07-13 20:57:58,906 INFO L226 Difference]: Without dead ends: 12133 [2021-07-13 20:57:58,906 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 1771.0ms TimeCoverageRelationStatistics Valid=590, Invalid=6892, Unknown=0, NotChecked=0, Total=7482 [2021-07-13 20:57:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2021-07-13 20:57:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 6535. [2021-07-13 20:57:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 3.485154576063667) internal successors, (22772), 6534 states have internal predecessors, (22772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:57:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 22772 transitions. [2021-07-13 20:57:59,044 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 22772 transitions. Word has length 39 [2021-07-13 20:57:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:57:59,044 INFO L482 AbstractCegarLoop]: Abstraction has 6535 states and 22772 transitions. [2021-07-13 20:57:59,044 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) [2021-07-13 20:57:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 22772 transitions. [2021-07-13 20:57:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:57:59,054 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:57:59,054 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:57:59,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-07-13 20:57:59,055 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:57:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:57:59,055 INFO L82 PathProgramCache]: Analyzing trace with hash 899794248, now seen corresponding path program 150 times [2021-07-13 20:57:59,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:57:59,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564458082] [2021-07-13 20:57:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:57:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:57:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:57:59,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:57:59,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564458082] [2021-07-13 20:57:59,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564458082] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:57:59,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:57:59,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:57:59,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125085605] [2021-07-13 20:57:59,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:57:59,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:57:59,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:57:59,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:57:59,244 INFO L87 Difference]: Start difference. First operand 6535 states and 22772 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) [2021-07-13 20:58:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:02,814 INFO L93 Difference]: Finished difference Result 12365 states and 42153 transitions. [2021-07-13 20:58:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-07-13 20:58:02,814 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 [2021-07-13 20:58:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:02,839 INFO L225 Difference]: With dead ends: 12365 [2021-07-13 20:58:02,839 INFO L226 Difference]: Without dead ends: 12274 [2021-07-13 20:58:02,840 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 1887.8ms TimeCoverageRelationStatistics Valid=645, Invalid=7911, Unknown=0, NotChecked=0, Total=8556 [2021-07-13 20:58:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12274 states. [2021-07-13 20:58:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12274 to 6511. [2021-07-13 20:58:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6510 states have (on average 3.489554531490015) internal successors, (22717), 6510 states have internal predecessors, (22717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 22717 transitions. [2021-07-13 20:58:03,023 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 22717 transitions. Word has length 39 [2021-07-13 20:58:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:03,024 INFO L482 AbstractCegarLoop]: Abstraction has 6511 states and 22717 transitions. [2021-07-13 20:58:03,024 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) [2021-07-13 20:58:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 22717 transitions. [2021-07-13 20:58:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:03,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:03,033 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:03,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-07-13 20:58:03,034 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1079910134, now seen corresponding path program 151 times [2021-07-13 20:58:03,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:03,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608131828] [2021-07-13 20:58:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:03,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:03,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608131828] [2021-07-13 20:58:03,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608131828] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:03,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:03,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:03,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658711020] [2021-07-13 20:58:03,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:03,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:03,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:03,225 INFO L87 Difference]: Start difference. First operand 6511 states and 22717 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) [2021-07-13 20:58:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:07,321 INFO L93 Difference]: Finished difference Result 13797 states and 46865 transitions. [2021-07-13 20:58:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-07-13 20:58:07,322 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 [2021-07-13 20:58:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:07,351 INFO L225 Difference]: With dead ends: 13797 [2021-07-13 20:58:07,351 INFO L226 Difference]: Without dead ends: 13624 [2021-07-13 20:58:07,352 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3858 ImplicationChecksByTransitivity, 2247.0ms TimeCoverageRelationStatistics Valid=808, Invalid=10534, Unknown=0, NotChecked=0, Total=11342 [2021-07-13 20:58:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13624 states. [2021-07-13 20:58:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13624 to 6571. [2021-07-13 20:58:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6570 states have (on average 3.4881278538812786) internal successors, (22917), 6570 states have internal predecessors, (22917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 22917 transitions. [2021-07-13 20:58:07,500 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 22917 transitions. Word has length 39 [2021-07-13 20:58:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:07,500 INFO L482 AbstractCegarLoop]: Abstraction has 6571 states and 22917 transitions. [2021-07-13 20:58:07,500 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) [2021-07-13 20:58:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 22917 transitions. [2021-07-13 20:58:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:07,511 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:07,511 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:07,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-07-13 20:58:07,511 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash 92742088, now seen corresponding path program 152 times [2021-07-13 20:58:07,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:07,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707941372] [2021-07-13 20:58:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:07,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:07,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707941372] [2021-07-13 20:58:07,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707941372] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:07,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:07,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:07,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215944360] [2021-07-13 20:58:07,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:07,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:07,725 INFO L87 Difference]: Start difference. First operand 6571 states and 22917 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) [2021-07-13 20:58:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:12,114 INFO L93 Difference]: Finished difference Result 14359 states and 48671 transitions. [2021-07-13 20:58:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-07-13 20:58:12,114 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 [2021-07-13 20:58:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:12,145 INFO L225 Difference]: With dead ends: 14359 [2021-07-13 20:58:12,145 INFO L226 Difference]: Without dead ends: 14178 [2021-07-13 20:58:12,146 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4390 ImplicationChecksByTransitivity, 2536.0ms TimeCoverageRelationStatistics Valid=900, Invalid=11756, Unknown=0, NotChecked=0, Total=12656 [2021-07-13 20:58:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2021-07-13 20:58:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 6676. [2021-07-13 20:58:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6676 states, 6675 states have (on average 3.4885393258426967) internal successors, (23286), 6675 states have internal predecessors, (23286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6676 states to 6676 states and 23286 transitions. [2021-07-13 20:58:12,315 INFO L78 Accepts]: Start accepts. Automaton has 6676 states and 23286 transitions. Word has length 39 [2021-07-13 20:58:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:12,315 INFO L482 AbstractCegarLoop]: Abstraction has 6676 states and 23286 transitions. [2021-07-13 20:58:12,315 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) [2021-07-13 20:58:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6676 states and 23286 transitions. [2021-07-13 20:58:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:12,325 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:12,325 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:12,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-07-13 20:58:12,325 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash 24997208, now seen corresponding path program 153 times [2021-07-13 20:58:12,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:12,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489743501] [2021-07-13 20:58:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:12,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:12,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489743501] [2021-07-13 20:58:12,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489743501] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:12,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:12,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:12,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027894095] [2021-07-13 20:58:12,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:12,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:12,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:12,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:12,515 INFO L87 Difference]: Start difference. First operand 6676 states and 23286 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) [2021-07-13 20:58:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:16,522 INFO L93 Difference]: Finished difference Result 13824 states and 46990 transitions. [2021-07-13 20:58:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-13 20:58:16,522 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 [2021-07-13 20:58:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:16,550 INFO L225 Difference]: With dead ends: 13824 [2021-07-13 20:58:16,550 INFO L226 Difference]: Without dead ends: 13690 [2021-07-13 20:58:16,551 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2183.6ms TimeCoverageRelationStatistics Valid=786, Invalid=10344, Unknown=0, NotChecked=0, Total=11130 [2021-07-13 20:58:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13690 states. [2021-07-13 20:58:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13690 to 6675. [2021-07-13 20:58:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6675 states, 6674 states have (on average 3.488163020677255) internal successors, (23280), 6674 states have internal predecessors, (23280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6675 states to 6675 states and 23280 transitions. [2021-07-13 20:58:16,696 INFO L78 Accepts]: Start accepts. Automaton has 6675 states and 23280 transitions. Word has length 39 [2021-07-13 20:58:16,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:16,696 INFO L482 AbstractCegarLoop]: Abstraction has 6675 states and 23280 transitions. [2021-07-13 20:58:16,697 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) [2021-07-13 20:58:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states and 23280 transitions. [2021-07-13 20:58:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:16,706 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:16,706 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:16,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-07-13 20:58:16,707 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1902644550, now seen corresponding path program 154 times [2021-07-13 20:58:16,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:16,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177136776] [2021-07-13 20:58:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:16,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:16,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177136776] [2021-07-13 20:58:16,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177136776] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:16,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:16,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:16,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328678387] [2021-07-13 20:58:16,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:16,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:16,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:16,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:16,894 INFO L87 Difference]: Start difference. First operand 6675 states and 23280 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) [2021-07-13 20:58:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:21,282 INFO L93 Difference]: Finished difference Result 14374 states and 48713 transitions. [2021-07-13 20:58:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-07-13 20:58:21,282 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 [2021-07-13 20:58:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:21,313 INFO L225 Difference]: With dead ends: 14374 [2021-07-13 20:58:21,313 INFO L226 Difference]: Without dead ends: 14206 [2021-07-13 20:58:21,314 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4398 ImplicationChecksByTransitivity, 2468.7ms TimeCoverageRelationStatistics Valid=882, Invalid=11774, Unknown=0, NotChecked=0, Total=12656 [2021-07-13 20:58:21,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14206 states. [2021-07-13 20:58:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14206 to 6559. [2021-07-13 20:58:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 6558 states have (on average 3.489021043000915) internal successors, (22881), 6558 states have internal predecessors, (22881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 22881 transitions. [2021-07-13 20:58:21,462 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 22881 transitions. Word has length 39 [2021-07-13 20:58:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:21,462 INFO L482 AbstractCegarLoop]: Abstraction has 6559 states and 22881 transitions. [2021-07-13 20:58:21,462 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) [2021-07-13 20:58:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 22881 transitions. [2021-07-13 20:58:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:21,472 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:21,472 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:21,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-07-13 20:58:21,472 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:21,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1012800064, now seen corresponding path program 155 times [2021-07-13 20:58:21,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:21,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198447043] [2021-07-13 20:58:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:21,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:21,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198447043] [2021-07-13 20:58:21,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198447043] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:21,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:21,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:21,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236658686] [2021-07-13 20:58:21,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:21,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:21,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:21,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:21,662 INFO L87 Difference]: Start difference. First operand 6559 states and 22881 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) [2021-07-13 20:58:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:23,392 INFO L93 Difference]: Finished difference Result 9304 states and 32116 transitions. [2021-07-13 20:58:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:58:23,392 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 [2021-07-13 20:58:23,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:23,410 INFO L225 Difference]: With dead ends: 9304 [2021-07-13 20:58:23,410 INFO L226 Difference]: Without dead ends: 9237 [2021-07-13 20:58:23,411 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 902.3ms TimeCoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:58:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9237 states. [2021-07-13 20:58:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9237 to 6779. [2021-07-13 20:58:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.487606963706108) internal successors, (23639), 6778 states have internal predecessors, (23639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 23639 transitions. [2021-07-13 20:58:23,533 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 23639 transitions. Word has length 39 [2021-07-13 20:58:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:23,533 INFO L482 AbstractCegarLoop]: Abstraction has 6779 states and 23639 transitions. [2021-07-13 20:58:23,533 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) [2021-07-13 20:58:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 23639 transitions. [2021-07-13 20:58:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:23,543 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:23,543 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:23,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-07-13 20:58:23,543 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1388518690, now seen corresponding path program 156 times [2021-07-13 20:58:23,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:23,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828449526] [2021-07-13 20:58:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:23,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:23,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828449526] [2021-07-13 20:58:23,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828449526] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:23,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:23,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:23,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17988868] [2021-07-13 20:58:23,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:23,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:23,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:23,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:23,731 INFO L87 Difference]: Start difference. First operand 6779 states and 23639 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) [2021-07-13 20:58:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:25,388 INFO L93 Difference]: Finished difference Result 9244 states and 31928 transitions. [2021-07-13 20:58:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:58:25,389 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 [2021-07-13 20:58:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:25,407 INFO L225 Difference]: With dead ends: 9244 [2021-07-13 20:58:25,407 INFO L226 Difference]: Without dead ends: 9181 [2021-07-13 20:58:25,407 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 843.4ms TimeCoverageRelationStatistics Valid=271, Invalid=2485, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 20:58:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2021-07-13 20:58:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 6771. [2021-07-13 20:58:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 6770 states have (on average 3.4881831610044314) internal successors, (23615), 6770 states have internal predecessors, (23615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 23615 transitions. [2021-07-13 20:58:25,522 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 23615 transitions. Word has length 39 [2021-07-13 20:58:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:25,522 INFO L482 AbstractCegarLoop]: Abstraction has 6771 states and 23615 transitions. [2021-07-13 20:58:25,522 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) [2021-07-13 20:58:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 23615 transitions. [2021-07-13 20:58:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:25,532 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:25,532 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:25,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-07-13 20:58:25,532 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1165161074, now seen corresponding path program 157 times [2021-07-13 20:58:25,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:25,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343473370] [2021-07-13 20:58:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:25,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:25,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343473370] [2021-07-13 20:58:25,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343473370] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:25,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:25,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:25,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553810125] [2021-07-13 20:58:25,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:25,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:25,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:25,723 INFO L87 Difference]: Start difference. First operand 6771 states and 23615 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) [2021-07-13 20:58:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:28,252 INFO L93 Difference]: Finished difference Result 10467 states and 36092 transitions. [2021-07-13 20:58:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-13 20:58:28,253 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 [2021-07-13 20:58:28,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:28,273 INFO L225 Difference]: With dead ends: 10467 [2021-07-13 20:58:28,273 INFO L226 Difference]: Without dead ends: 10424 [2021-07-13 20:58:28,274 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1477.0ms TimeCoverageRelationStatistics Valid=482, Invalid=5524, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 20:58:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10424 states. [2021-07-13 20:58:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10424 to 6983. [2021-07-13 20:58:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6983 states, 6982 states have (on average 3.4925522772844455) internal successors, (24385), 6982 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 24385 transitions. [2021-07-13 20:58:28,405 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 24385 transitions. Word has length 39 [2021-07-13 20:58:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:28,405 INFO L482 AbstractCegarLoop]: Abstraction has 6983 states and 24385 transitions. [2021-07-13 20:58:28,405 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) [2021-07-13 20:58:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 24385 transitions. [2021-07-13 20:58:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:28,416 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:28,416 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:28,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-07-13 20:58:28,416 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:28,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1349207920, now seen corresponding path program 158 times [2021-07-13 20:58:28,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:28,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442347062] [2021-07-13 20:58:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:28,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:28,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442347062] [2021-07-13 20:58:28,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442347062] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:28,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:28,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:28,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594938950] [2021-07-13 20:58:28,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:28,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:28,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:28,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:28,607 INFO L87 Difference]: Start difference. First operand 6983 states and 24385 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) [2021-07-13 20:58:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:31,432 INFO L93 Difference]: Finished difference Result 11670 states and 40166 transitions. [2021-07-13 20:58:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 20:58:31,432 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 [2021-07-13 20:58:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:31,457 INFO L225 Difference]: With dead ends: 11670 [2021-07-13 20:58:31,457 INFO L226 Difference]: Without dead ends: 11606 [2021-07-13 20:58:31,458 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1651.8ms TimeCoverageRelationStatistics Valid=531, Invalid=6609, Unknown=0, NotChecked=0, Total=7140 [2021-07-13 20:58:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11606 states. [2021-07-13 20:58:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11606 to 6899. [2021-07-13 20:58:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6899 states, 6898 states have (on average 3.4956509133082054) internal successors, (24113), 6898 states have internal predecessors, (24113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 24113 transitions. [2021-07-13 20:58:31,612 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 24113 transitions. Word has length 39 [2021-07-13 20:58:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:31,612 INFO L482 AbstractCegarLoop]: Abstraction has 6899 states and 24113 transitions. [2021-07-13 20:58:31,612 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) [2021-07-13 20:58:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 24113 transitions. [2021-07-13 20:58:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:31,622 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:31,622 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:31,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-07-13 20:58:31,622 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash -246677504, now seen corresponding path program 159 times [2021-07-13 20:58:31,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:31,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552671749] [2021-07-13 20:58:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:31,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:31,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552671749] [2021-07-13 20:58:31,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552671749] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:31,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:31,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:31,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122084892] [2021-07-13 20:58:31,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:31,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:31,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:31,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:31,811 INFO L87 Difference]: Start difference. First operand 6899 states and 24113 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) [2021-07-13 20:58:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:33,583 INFO L93 Difference]: Finished difference Result 9487 states and 32701 transitions. [2021-07-13 20:58:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 20:58:33,583 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 [2021-07-13 20:58:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:33,603 INFO L225 Difference]: With dead ends: 9487 [2021-07-13 20:58:33,603 INFO L226 Difference]: Without dead ends: 9432 [2021-07-13 20:58:33,603 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 955.1ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 20:58:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2021-07-13 20:58:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 6901. [2021-07-13 20:58:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6901 states, 6900 states have (on average 3.495072463768116) internal successors, (24116), 6900 states have internal predecessors, (24116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6901 states to 6901 states and 24116 transitions. [2021-07-13 20:58:33,725 INFO L78 Accepts]: Start accepts. Automaton has 6901 states and 24116 transitions. Word has length 39 [2021-07-13 20:58:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:33,725 INFO L482 AbstractCegarLoop]: Abstraction has 6901 states and 24116 transitions. [2021-07-13 20:58:33,725 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) [2021-07-13 20:58:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6901 states and 24116 transitions. [2021-07-13 20:58:33,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:33,735 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:33,735 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:33,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-07-13 20:58:33,735 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:33,735 INFO L82 PathProgramCache]: Analyzing trace with hash 925974718, now seen corresponding path program 160 times [2021-07-13 20:58:33,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:33,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838174074] [2021-07-13 20:58:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:33,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:33,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838174074] [2021-07-13 20:58:33,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838174074] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:33,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:33,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:33,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667902315] [2021-07-13 20:58:33,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:33,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:33,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:33,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:33,924 INFO L87 Difference]: Start difference. First operand 6901 states and 24116 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) [2021-07-13 20:58:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:35,923 INFO L93 Difference]: Finished difference Result 10611 states and 36548 transitions. [2021-07-13 20:58:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-13 20:58:35,923 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 [2021-07-13 20:58:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:35,948 INFO L225 Difference]: With dead ends: 10611 [2021-07-13 20:58:35,948 INFO L226 Difference]: Without dead ends: 10565 [2021-07-13 20:58:35,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1019.9ms TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:58:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10565 states. [2021-07-13 20:58:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10565 to 6905. [2021-07-13 20:58:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 6904 states have (on average 3.4942062572421784) internal successors, (24124), 6904 states have internal predecessors, (24124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 24124 transitions. [2021-07-13 20:58:36,105 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 24124 transitions. Word has length 39 [2021-07-13 20:58:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:36,106 INFO L482 AbstractCegarLoop]: Abstraction has 6905 states and 24124 transitions. [2021-07-13 20:58:36,106 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) [2021-07-13 20:58:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 24124 transitions. [2021-07-13 20:58:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:36,117 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:36,117 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:36,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-07-13 20:58:36,117 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:36,117 INFO L82 PathProgramCache]: Analyzing trace with hash 678508556, now seen corresponding path program 161 times [2021-07-13 20:58:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:36,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086611695] [2021-07-13 20:58:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:36,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:36,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086611695] [2021-07-13 20:58:36,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086611695] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:36,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:36,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:36,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698770286] [2021-07-13 20:58:36,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:36,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:36,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:36,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:36,305 INFO L87 Difference]: Start difference. First operand 6905 states and 24124 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) [2021-07-13 20:58:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:38,137 INFO L93 Difference]: Finished difference Result 9531 states and 32885 transitions. [2021-07-13 20:58:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:58:38,138 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 [2021-07-13 20:58:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:38,158 INFO L225 Difference]: With dead ends: 9531 [2021-07-13 20:58:38,159 INFO L226 Difference]: Without dead ends: 9478 [2021-07-13 20:58:38,159 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 996.4ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 20:58:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2021-07-13 20:58:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 6895. [2021-07-13 20:58:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6894 states have (on average 3.496228604583696) internal successors, (24103), 6894 states have internal predecessors, (24103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:38,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 24103 transitions. [2021-07-13 20:58:38,287 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 24103 transitions. Word has length 39 [2021-07-13 20:58:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:38,288 INFO L482 AbstractCegarLoop]: Abstraction has 6895 states and 24103 transitions. [2021-07-13 20:58:38,288 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) [2021-07-13 20:58:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 24103 transitions. [2021-07-13 20:58:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:38,298 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:38,298 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:38,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-07-13 20:58:38,298 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1943410644, now seen corresponding path program 162 times [2021-07-13 20:58:38,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:38,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470176378] [2021-07-13 20:58:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:38,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:38,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470176378] [2021-07-13 20:58:38,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470176378] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:38,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:38,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:38,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018992270] [2021-07-13 20:58:38,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:38,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:38,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:38,494 INFO L87 Difference]: Start difference. First operand 6895 states and 24103 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) [2021-07-13 20:58:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:40,178 INFO L93 Difference]: Finished difference Result 9368 states and 32482 transitions. [2021-07-13 20:58:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 20:58:40,178 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 [2021-07-13 20:58:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:40,199 INFO L225 Difference]: With dead ends: 9368 [2021-07-13 20:58:40,199 INFO L226 Difference]: Without dead ends: 9301 [2021-07-13 20:58:40,199 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 803.7ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 20:58:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2021-07-13 20:58:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 6951. [2021-07-13 20:58:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6951 states, 6950 states have (on average 3.4913669064748203) internal successors, (24265), 6950 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 24265 transitions. [2021-07-13 20:58:40,335 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 24265 transitions. Word has length 39 [2021-07-13 20:58:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:40,335 INFO L482 AbstractCegarLoop]: Abstraction has 6951 states and 24265 transitions. [2021-07-13 20:58:40,335 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) [2021-07-13 20:58:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 24265 transitions. [2021-07-13 20:58:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:40,346 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:40,346 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:40,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-07-13 20:58:40,346 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash -49762102, now seen corresponding path program 163 times [2021-07-13 20:58:40,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:40,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124525517] [2021-07-13 20:58:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:40,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:40,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124525517] [2021-07-13 20:58:40,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124525517] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:40,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:40,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:40,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476965530] [2021-07-13 20:58:40,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:40,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:40,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:40,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:40,535 INFO L87 Difference]: Start difference. First operand 6951 states and 24265 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) [2021-07-13 20:58:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:42,152 INFO L93 Difference]: Finished difference Result 9404 states and 32566 transitions. [2021-07-13 20:58:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 20:58:42,152 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 [2021-07-13 20:58:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:42,173 INFO L225 Difference]: With dead ends: 9404 [2021-07-13 20:58:42,173 INFO L226 Difference]: Without dead ends: 9341 [2021-07-13 20:58:42,174 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 782.7ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 20:58:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-07-13 20:58:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 6983. [2021-07-13 20:58:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6983 states, 6982 states have (on average 3.487396161558293) internal successors, (24349), 6982 states have internal predecessors, (24349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 24349 transitions. [2021-07-13 20:58:42,315 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 24349 transitions. Word has length 39 [2021-07-13 20:58:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:42,316 INFO L482 AbstractCegarLoop]: Abstraction has 6983 states and 24349 transitions. [2021-07-13 20:58:42,316 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) [2021-07-13 20:58:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 24349 transitions. [2021-07-13 20:58:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:42,326 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:42,326 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:42,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-07-13 20:58:42,326 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:42,326 INFO L82 PathProgramCache]: Analyzing trace with hash 14871404, now seen corresponding path program 164 times [2021-07-13 20:58:42,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:42,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41883491] [2021-07-13 20:58:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:42,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:42,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41883491] [2021-07-13 20:58:42,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41883491] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:42,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:42,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:42,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415040100] [2021-07-13 20:58:42,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:42,523 INFO L87 Difference]: Start difference. First operand 6983 states and 24349 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) [2021-07-13 20:58:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:44,157 INFO L93 Difference]: Finished difference Result 9387 states and 32540 transitions. [2021-07-13 20:58:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 20:58:44,158 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 [2021-07-13 20:58:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:44,176 INFO L225 Difference]: With dead ends: 9387 [2021-07-13 20:58:44,176 INFO L226 Difference]: Without dead ends: 9264 [2021-07-13 20:58:44,176 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 837.1ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 20:58:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9264 states. [2021-07-13 20:58:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9264 to 6951. [2021-07-13 20:58:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6951 states, 6950 states have (on average 3.489064748201439) internal successors, (24249), 6950 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 24249 transitions. [2021-07-13 20:58:44,292 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 24249 transitions. Word has length 39 [2021-07-13 20:58:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:44,293 INFO L482 AbstractCegarLoop]: Abstraction has 6951 states and 24249 transitions. [2021-07-13 20:58:44,293 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) [2021-07-13 20:58:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 24249 transitions. [2021-07-13 20:58:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:44,303 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:44,303 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:44,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-07-13 20:58:44,303 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:44,303 INFO L82 PathProgramCache]: Analyzing trace with hash 838477612, now seen corresponding path program 165 times [2021-07-13 20:58:44,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:44,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956913845] [2021-07-13 20:58:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:44,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:44,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956913845] [2021-07-13 20:58:44,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956913845] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:44,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:44,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:44,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830441567] [2021-07-13 20:58:44,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:44,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:44,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:44,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:44,526 INFO L87 Difference]: Start difference. First operand 6951 states and 24249 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) [2021-07-13 20:58:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:47,033 INFO L93 Difference]: Finished difference Result 10564 states and 36421 transitions. [2021-07-13 20:58:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 20:58:47,033 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 [2021-07-13 20:58:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:47,054 INFO L225 Difference]: With dead ends: 10564 [2021-07-13 20:58:47,055 INFO L226 Difference]: Without dead ends: 10458 [2021-07-13 20:58:47,055 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 1518.6ms TimeCoverageRelationStatistics Valid=485, Invalid=5521, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 20:58:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10458 states. [2021-07-13 20:58:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10458 to 6978. [2021-07-13 20:58:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6977 states have (on average 3.486742152787731) internal successors, (24327), 6977 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 24327 transitions. [2021-07-13 20:58:47,187 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 24327 transitions. Word has length 39 [2021-07-13 20:58:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:47,188 INFO L482 AbstractCegarLoop]: Abstraction has 6978 states and 24327 transitions. [2021-07-13 20:58:47,188 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) [2021-07-13 20:58:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 24327 transitions. [2021-07-13 20:58:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:47,199 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:47,199 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:47,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-07-13 20:58:47,199 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash -942120690, now seen corresponding path program 166 times [2021-07-13 20:58:47,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:47,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228034475] [2021-07-13 20:58:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:47,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:47,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228034475] [2021-07-13 20:58:47,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228034475] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:47,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:47,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:47,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742056272] [2021-07-13 20:58:47,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:47,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:47,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:47,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:47,387 INFO L87 Difference]: Start difference. First operand 6978 states and 24327 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) [2021-07-13 20:58:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:50,286 INFO L93 Difference]: Finished difference Result 11735 states and 40418 transitions. [2021-07-13 20:58:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 20:58:50,286 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 [2021-07-13 20:58:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:50,310 INFO L225 Difference]: With dead ends: 11735 [2021-07-13 20:58:50,310 INFO L226 Difference]: Without dead ends: 11683 [2021-07-13 20:58:50,311 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 1668.9ms TimeCoverageRelationStatistics Valid=540, Invalid=6770, Unknown=0, NotChecked=0, Total=7310 [2021-07-13 20:58:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11683 states. [2021-07-13 20:58:50,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11683 to 6956. [2021-07-13 20:58:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 6955 states have (on average 3.4869877785765637) internal successors, (24252), 6955 states have internal predecessors, (24252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 24252 transitions. [2021-07-13 20:58:50,460 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 24252 transitions. Word has length 39 [2021-07-13 20:58:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:50,460 INFO L482 AbstractCegarLoop]: Abstraction has 6956 states and 24252 transitions. [2021-07-13 20:58:50,460 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) [2021-07-13 20:58:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 24252 transitions. [2021-07-13 20:58:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:50,515 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:50,515 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:50,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-07-13 20:58:50,515 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:50,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1756961182, now seen corresponding path program 167 times [2021-07-13 20:58:50,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:50,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961306078] [2021-07-13 20:58:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:50,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:50,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961306078] [2021-07-13 20:58:50,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961306078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:50,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:50,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:50,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966406209] [2021-07-13 20:58:50,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:50,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:50,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:50,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:50,703 INFO L87 Difference]: Start difference. First operand 6956 states and 24252 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) [2021-07-13 20:58:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:52,366 INFO L93 Difference]: Finished difference Result 9517 states and 32824 transitions. [2021-07-13 20:58:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 20:58:52,366 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 [2021-07-13 20:58:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:52,386 INFO L225 Difference]: With dead ends: 9517 [2021-07-13 20:58:52,386 INFO L226 Difference]: Without dead ends: 9462 [2021-07-13 20:58:52,387 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 878.3ms TimeCoverageRelationStatistics Valid=289, Invalid=2573, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:58:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9462 states. [2021-07-13 20:58:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9462 to 6964. [2021-07-13 20:58:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6963 states have (on average 3.4864282636794486) internal successors, (24276), 6963 states have internal predecessors, (24276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 24276 transitions. [2021-07-13 20:58:52,515 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 24276 transitions. Word has length 39 [2021-07-13 20:58:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:52,516 INFO L482 AbstractCegarLoop]: Abstraction has 6964 states and 24276 transitions. [2021-07-13 20:58:52,516 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) [2021-07-13 20:58:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 24276 transitions. [2021-07-13 20:58:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:52,527 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:52,527 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:52,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-07-13 20:58:52,527 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1365353892, now seen corresponding path program 168 times [2021-07-13 20:58:52,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:52,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560006310] [2021-07-13 20:58:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:52,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:52,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560006310] [2021-07-13 20:58:52,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560006310] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:52,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:52,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:52,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831721551] [2021-07-13 20:58:52,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:52,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:52,759 INFO L87 Difference]: Start difference. First operand 6964 states and 24276 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) [2021-07-13 20:58:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:54,792 INFO L93 Difference]: Finished difference Result 10709 states and 36828 transitions. [2021-07-13 20:58:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 20:58:54,792 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 [2021-07-13 20:58:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:54,814 INFO L225 Difference]: With dead ends: 10709 [2021-07-13 20:58:54,814 INFO L226 Difference]: Without dead ends: 10649 [2021-07-13 20:58:54,815 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1077.5ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:58:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10649 states. [2021-07-13 20:58:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10649 to 6962. [2021-07-13 20:58:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6961 states have (on average 3.4867116793564144) internal successors, (24271), 6961 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 24271 transitions. [2021-07-13 20:58:55,010 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 24271 transitions. Word has length 39 [2021-07-13 20:58:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:55,010 INFO L482 AbstractCegarLoop]: Abstraction has 6962 states and 24271 transitions. [2021-07-13 20:58:55,010 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) [2021-07-13 20:58:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 24271 transitions. [2021-07-13 20:58:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:55,021 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:55,021 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:55,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-07-13 20:58:55,021 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1052209802, now seen corresponding path program 169 times [2021-07-13 20:58:55,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:55,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343041817] [2021-07-13 20:58:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:55,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:55,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343041817] [2021-07-13 20:58:55,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343041817] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:55,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:55,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:55,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316083659] [2021-07-13 20:58:55,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:55,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:55,220 INFO L87 Difference]: Start difference. First operand 6962 states and 24271 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) [2021-07-13 20:58:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:56,863 INFO L93 Difference]: Finished difference Result 9486 states and 32778 transitions. [2021-07-13 20:58:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:58:56,863 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 [2021-07-13 20:58:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:56,882 INFO L225 Difference]: With dead ends: 9486 [2021-07-13 20:58:56,882 INFO L226 Difference]: Without dead ends: 9395 [2021-07-13 20:58:56,883 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 867.1ms TimeCoverageRelationStatistics Valid=271, Invalid=2485, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 20:58:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2021-07-13 20:58:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 6962. [2021-07-13 20:58:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6961 states have (on average 3.4858497342335872) internal successors, (24265), 6961 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 24265 transitions. [2021-07-13 20:58:57,005 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 24265 transitions. Word has length 39 [2021-07-13 20:58:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:57,005 INFO L482 AbstractCegarLoop]: Abstraction has 6962 states and 24265 transitions. [2021-07-13 20:58:57,005 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) [2021-07-13 20:58:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 24265 transitions. [2021-07-13 20:58:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:57,016 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:57,016 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:57,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-07-13 20:58:57,016 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash -450272404, now seen corresponding path program 170 times [2021-07-13 20:58:57,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:57,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607653403] [2021-07-13 20:58:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:57,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:57,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607653403] [2021-07-13 20:58:57,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607653403] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:57,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:57,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:57,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940252011] [2021-07-13 20:58:57,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:57,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:57,242 INFO L87 Difference]: Start difference. First operand 6962 states and 24265 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) [2021-07-13 20:58:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:58:59,248 INFO L93 Difference]: Finished difference Result 10861 states and 37319 transitions. [2021-07-13 20:58:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-13 20:58:59,249 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 [2021-07-13 20:58:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:58:59,270 INFO L225 Difference]: With dead ends: 10861 [2021-07-13 20:58:59,270 INFO L226 Difference]: Without dead ends: 10660 [2021-07-13 20:58:59,271 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1040.3ms TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:58:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10660 states. [2021-07-13 20:58:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10660 to 6982. [2021-07-13 20:58:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6981 states have (on average 3.484744305973356) internal successors, (24327), 6981 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:58:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 24327 transitions. [2021-07-13 20:58:59,444 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 24327 transitions. Word has length 39 [2021-07-13 20:58:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:58:59,444 INFO L482 AbstractCegarLoop]: Abstraction has 6982 states and 24327 transitions. [2021-07-13 20:58:59,444 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) [2021-07-13 20:58:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 24327 transitions. [2021-07-13 20:58:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:58:59,454 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:58:59,454 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:58:59,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-07-13 20:58:59,454 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:58:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:58:59,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1049550434, now seen corresponding path program 171 times [2021-07-13 20:58:59,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:58:59,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050493073] [2021-07-13 20:58:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:58:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:58:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:58:59,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:58:59,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050493073] [2021-07-13 20:58:59,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050493073] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:58:59,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:58:59,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:58:59,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896754836] [2021-07-13 20:58:59,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:58:59,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:58:59,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:58:59,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:58:59,655 INFO L87 Difference]: Start difference. First operand 6982 states and 24327 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) [2021-07-13 20:59:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:01,469 INFO L93 Difference]: Finished difference Result 9601 states and 32947 transitions. [2021-07-13 20:59:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 20:59:01,469 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 [2021-07-13 20:59:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:01,491 INFO L225 Difference]: With dead ends: 9601 [2021-07-13 20:59:01,491 INFO L226 Difference]: Without dead ends: 9534 [2021-07-13 20:59:01,491 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 1023.4ms TimeCoverageRelationStatistics Valid=319, Invalid=3103, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 20:59:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9534 states. [2021-07-13 20:59:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9534 to 7008. [2021-07-13 20:59:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 3.4840873412301985) internal successors, (24413), 7007 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 24413 transitions. [2021-07-13 20:59:01,664 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 24413 transitions. Word has length 39 [2021-07-13 20:59:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:01,664 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 24413 transitions. [2021-07-13 20:59:01,664 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) [2021-07-13 20:59:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 24413 transitions. [2021-07-13 20:59:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:01,674 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:01,674 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:01,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-07-13 20:59:01,674 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1351768320, now seen corresponding path program 172 times [2021-07-13 20:59:01,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:01,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044847645] [2021-07-13 20:59:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:01,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:01,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044847645] [2021-07-13 20:59:01,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044847645] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:01,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:01,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:01,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064121656] [2021-07-13 20:59:01,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:01,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:01,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:01,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:01,860 INFO L87 Difference]: Start difference. First operand 7008 states and 24413 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) [2021-07-13 20:59:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:03,556 INFO L93 Difference]: Finished difference Result 9514 states and 32714 transitions. [2021-07-13 20:59:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:59:03,556 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 [2021-07-13 20:59:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:03,576 INFO L225 Difference]: With dead ends: 9514 [2021-07-13 20:59:03,576 INFO L226 Difference]: Without dead ends: 9451 [2021-07-13 20:59:03,576 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 956.9ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 20:59:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9451 states. [2021-07-13 20:59:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9451 to 7008. [2021-07-13 20:59:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 3.4835164835164836) internal successors, (24409), 7007 states have internal predecessors, (24409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 24409 transitions. [2021-07-13 20:59:03,763 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 24409 transitions. Word has length 39 [2021-07-13 20:59:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:03,764 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 24409 transitions. [2021-07-13 20:59:03,764 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) [2021-07-13 20:59:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 24409 transitions. [2021-07-13 20:59:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:03,774 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:03,774 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:03,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-07-13 20:59:03,774 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:03,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1128410704, now seen corresponding path program 173 times [2021-07-13 20:59:03,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:03,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345216330] [2021-07-13 20:59:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:04,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:04,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345216330] [2021-07-13 20:59:04,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345216330] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:04,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:04,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:04,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646209954] [2021-07-13 20:59:04,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:04,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:04,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:04,006 INFO L87 Difference]: Start difference. First operand 7008 states and 24409 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) [2021-07-13 20:59:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:06,783 INFO L93 Difference]: Finished difference Result 10634 states and 36442 transitions. [2021-07-13 20:59:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-13 20:59:06,783 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 [2021-07-13 20:59:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:06,803 INFO L225 Difference]: With dead ends: 10634 [2021-07-13 20:59:06,803 INFO L226 Difference]: Without dead ends: 10591 [2021-07-13 20:59:06,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 1820.3ms TimeCoverageRelationStatistics Valid=592, Invalid=6890, Unknown=0, NotChecked=0, Total=7482 [2021-07-13 20:59:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10591 states. [2021-07-13 20:59:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10591 to 7018. [2021-07-13 20:59:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7018 states, 7017 states have (on average 3.4839675074818297) internal successors, (24447), 7017 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 24447 transitions. [2021-07-13 20:59:06,934 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 24447 transitions. Word has length 39 [2021-07-13 20:59:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:06,934 INFO L482 AbstractCegarLoop]: Abstraction has 7018 states and 24447 transitions. [2021-07-13 20:59:06,934 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) [2021-07-13 20:59:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 24447 transitions. [2021-07-13 20:59:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:06,944 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:06,944 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:06,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-07-13 20:59:06,944 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:06,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1385958290, now seen corresponding path program 174 times [2021-07-13 20:59:06,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:06,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206540015] [2021-07-13 20:59:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:07,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:07,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206540015] [2021-07-13 20:59:07,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206540015] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:07,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:07,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:07,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241151464] [2021-07-13 20:59:07,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:07,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:07,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:07,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:07,130 INFO L87 Difference]: Start difference. First operand 7018 states and 24447 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) [2021-07-13 20:59:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:10,234 INFO L93 Difference]: Finished difference Result 11861 states and 40576 transitions. [2021-07-13 20:59:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-07-13 20:59:10,234 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 [2021-07-13 20:59:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:10,257 INFO L225 Difference]: With dead ends: 11861 [2021-07-13 20:59:10,258 INFO L226 Difference]: Without dead ends: 11809 [2021-07-13 20:59:10,258 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 1910.6ms TimeCoverageRelationStatistics Valid=639, Invalid=8103, Unknown=0, NotChecked=0, Total=8742 [2021-07-13 20:59:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2021-07-13 20:59:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 7014. [2021-07-13 20:59:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7014 states, 7013 states have (on average 3.4839583630400686) internal successors, (24433), 7013 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 24433 transitions. [2021-07-13 20:59:10,399 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 24433 transitions. Word has length 39 [2021-07-13 20:59:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:10,399 INFO L482 AbstractCegarLoop]: Abstraction has 7014 states and 24433 transitions. [2021-07-13 20:59:10,399 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) [2021-07-13 20:59:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 24433 transitions. [2021-07-13 20:59:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:10,409 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:10,409 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:10,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-07-13 20:59:10,409 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -209927134, now seen corresponding path program 175 times [2021-07-13 20:59:10,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:10,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557638563] [2021-07-13 20:59:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:10,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:10,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557638563] [2021-07-13 20:59:10,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557638563] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:10,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:10,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:10,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581798276] [2021-07-13 20:59:10,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:10,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:10,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:10,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:10,595 INFO L87 Difference]: Start difference. First operand 7014 states and 24433 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) [2021-07-13 20:59:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:12,417 INFO L93 Difference]: Finished difference Result 9608 states and 32926 transitions. [2021-07-13 20:59:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 20:59:12,417 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 [2021-07-13 20:59:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:12,436 INFO L225 Difference]: With dead ends: 9608 [2021-07-13 20:59:12,436 INFO L226 Difference]: Without dead ends: 9553 [2021-07-13 20:59:12,437 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1036.6ms TimeCoverageRelationStatistics Valid=339, Invalid=3083, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 20:59:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9553 states. [2021-07-13 20:59:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9553 to 7016. [2021-07-13 20:59:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 3.4833927298645757) internal successors, (24436), 7015 states have internal predecessors, (24436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 24436 transitions. [2021-07-13 20:59:12,563 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 24436 transitions. Word has length 39 [2021-07-13 20:59:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:12,563 INFO L482 AbstractCegarLoop]: Abstraction has 7016 states and 24436 transitions. [2021-07-13 20:59:12,563 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) [2021-07-13 20:59:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 24436 transitions. [2021-07-13 20:59:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:12,574 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:12,574 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:12,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-07-13 20:59:12,574 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:12,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:12,574 INFO L82 PathProgramCache]: Analyzing trace with hash 962725088, now seen corresponding path program 176 times [2021-07-13 20:59:12,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:12,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61614164] [2021-07-13 20:59:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:12,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:12,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61614164] [2021-07-13 20:59:12,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61614164] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:12,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:12,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:12,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772762908] [2021-07-13 20:59:12,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:12,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:12,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:12,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:12,759 INFO L87 Difference]: Start difference. First operand 7016 states and 24436 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) [2021-07-13 20:59:14,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:14,828 INFO L93 Difference]: Finished difference Result 10732 states and 36773 transitions. [2021-07-13 20:59:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-13 20:59:14,828 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 [2021-07-13 20:59:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:14,849 INFO L225 Difference]: With dead ends: 10732 [2021-07-13 20:59:14,849 INFO L226 Difference]: Without dead ends: 10686 [2021-07-13 20:59:14,850 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 1123.9ms TimeCoverageRelationStatistics Valid=356, Invalid=3550, Unknown=0, NotChecked=0, Total=3906 [2021-07-13 20:59:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2021-07-13 20:59:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 7020. [2021-07-13 20:59:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 7019 states have (on average 3.4825473714204302) internal successors, (24444), 7019 states have internal predecessors, (24444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 24444 transitions. [2021-07-13 20:59:14,982 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 24444 transitions. Word has length 39 [2021-07-13 20:59:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:14,982 INFO L482 AbstractCegarLoop]: Abstraction has 7020 states and 24444 transitions. [2021-07-13 20:59:14,982 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) [2021-07-13 20:59:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 24444 transitions. [2021-07-13 20:59:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:14,992 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:14,992 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:14,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-07-13 20:59:14,992 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash 715258926, now seen corresponding path program 177 times [2021-07-13 20:59:14,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:14,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092270415] [2021-07-13 20:59:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:15,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:15,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092270415] [2021-07-13 20:59:15,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092270415] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:15,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:15,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:15,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484207141] [2021-07-13 20:59:15,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:15,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:15,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:15,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:15,177 INFO L87 Difference]: Start difference. First operand 7020 states and 24444 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) [2021-07-13 20:59:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:17,071 INFO L93 Difference]: Finished difference Result 9720 states and 33271 transitions. [2021-07-13 20:59:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-13 20:59:17,072 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 [2021-07-13 20:59:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:17,091 INFO L225 Difference]: With dead ends: 9720 [2021-07-13 20:59:17,091 INFO L226 Difference]: Without dead ends: 9667 [2021-07-13 20:59:17,091 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1108.8ms TimeCoverageRelationStatistics Valid=343, Invalid=3197, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:59:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9667 states. [2021-07-13 20:59:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9667 to 7010. [2021-07-13 20:59:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7009 states have (on average 3.484805250392353) internal successors, (24425), 7009 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 24425 transitions. [2021-07-13 20:59:17,217 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 24425 transitions. Word has length 39 [2021-07-13 20:59:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:17,217 INFO L482 AbstractCegarLoop]: Abstraction has 7010 states and 24425 transitions. [2021-07-13 20:59:17,217 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) [2021-07-13 20:59:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 24425 transitions. [2021-07-13 20:59:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:17,227 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:17,227 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:17,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-07-13 20:59:17,227 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:17,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2008583984, now seen corresponding path program 178 times [2021-07-13 20:59:17,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:17,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058524311] [2021-07-13 20:59:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:17,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:17,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058524311] [2021-07-13 20:59:17,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058524311] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:17,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:17,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:17,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606037528] [2021-07-13 20:59:17,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:17,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:17,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:17,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:17,414 INFO L87 Difference]: Start difference. First operand 7010 states and 24425 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) [2021-07-13 20:59:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:19,218 INFO L93 Difference]: Finished difference Result 9511 states and 32733 transitions. [2021-07-13 20:59:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 20:59:19,218 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 [2021-07-13 20:59:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:19,237 INFO L225 Difference]: With dead ends: 9511 [2021-07-13 20:59:19,237 INFO L226 Difference]: Without dead ends: 9444 [2021-07-13 20:59:19,238 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 950.6ms TimeCoverageRelationStatistics Valid=294, Invalid=2898, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 20:59:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9444 states. [2021-07-13 20:59:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9444 to 7028. [2021-07-13 20:59:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 7027 states have (on average 3.481855699444998) internal successors, (24467), 7027 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 24467 transitions. [2021-07-13 20:59:19,362 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 24467 transitions. Word has length 39 [2021-07-13 20:59:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:19,362 INFO L482 AbstractCegarLoop]: Abstraction has 7028 states and 24467 transitions. [2021-07-13 20:59:19,362 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) [2021-07-13 20:59:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 24467 transitions. [2021-07-13 20:59:19,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:19,373 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:19,373 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:19,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-07-13 20:59:19,373 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1016309968, now seen corresponding path program 179 times [2021-07-13 20:59:19,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:19,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156994200] [2021-07-13 20:59:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:19,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:19,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156994200] [2021-07-13 20:59:19,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156994200] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:19,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:19,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:19,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485064914] [2021-07-13 20:59:19,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:19,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:19,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:19,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:19,582 INFO L87 Difference]: Start difference. First operand 7028 states and 24467 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) [2021-07-13 20:59:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:21,217 INFO L93 Difference]: Finished difference Result 9477 states and 32620 transitions. [2021-07-13 20:59:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:59:21,217 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 [2021-07-13 20:59:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:21,236 INFO L225 Difference]: With dead ends: 9477 [2021-07-13 20:59:21,237 INFO L226 Difference]: Without dead ends: 9434 [2021-07-13 20:59:21,237 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 903.5ms TimeCoverageRelationStatistics Valid=267, Invalid=2489, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 20:59:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9434 states. [2021-07-13 20:59:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9434 to 7046. [2021-07-13 20:59:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 7045 states have (on average 3.4784953867991484) internal successors, (24506), 7045 states have internal predecessors, (24506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 24506 transitions. [2021-07-13 20:59:21,360 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 24506 transitions. Word has length 39 [2021-07-13 20:59:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:21,360 INFO L482 AbstractCegarLoop]: Abstraction has 7046 states and 24506 transitions. [2021-07-13 20:59:21,360 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) [2021-07-13 20:59:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 24506 transitions. [2021-07-13 20:59:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:21,370 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:21,370 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:21,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-07-13 20:59:21,370 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash 733797168, now seen corresponding path program 180 times [2021-07-13 20:59:21,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:21,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16534739] [2021-07-13 20:59:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:21,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:21,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16534739] [2021-07-13 20:59:21,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16534739] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:21,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:21,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:21,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647138770] [2021-07-13 20:59:21,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:21,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:21,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:21,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:21,570 INFO L87 Difference]: Start difference. First operand 7046 states and 24506 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) [2021-07-13 20:59:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:23,221 INFO L93 Difference]: Finished difference Result 9411 states and 32458 transitions. [2021-07-13 20:59:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 20:59:23,221 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 [2021-07-13 20:59:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:23,240 INFO L225 Difference]: With dead ends: 9411 [2021-07-13 20:59:23,240 INFO L226 Difference]: Without dead ends: 9348 [2021-07-13 20:59:23,240 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 881.3ms TimeCoverageRelationStatistics Valid=266, Invalid=2490, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 20:59:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2021-07-13 20:59:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 7028. [2021-07-13 20:59:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 7027 states have (on average 3.4810018500071154) internal successors, (24461), 7027 states have internal predecessors, (24461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 24461 transitions. [2021-07-13 20:59:23,360 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 24461 transitions. Word has length 39 [2021-07-13 20:59:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:23,360 INFO L482 AbstractCegarLoop]: Abstraction has 7028 states and 24461 transitions. [2021-07-13 20:59:23,360 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) [2021-07-13 20:59:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 24461 transitions. [2021-07-13 20:59:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:23,370 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:23,370 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:23,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-07-13 20:59:23,370 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:23,370 INFO L82 PathProgramCache]: Analyzing trace with hash -134793812, now seen corresponding path program 181 times [2021-07-13 20:59:23,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:23,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111823246] [2021-07-13 20:59:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:23,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:23,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111823246] [2021-07-13 20:59:23,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111823246] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:23,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:23,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:23,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434392292] [2021-07-13 20:59:23,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:23,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:23,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:23,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:23,551 INFO L87 Difference]: Start difference. First operand 7028 states and 24461 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) [2021-07-13 20:59:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:26,152 INFO L93 Difference]: Finished difference Result 10516 states and 36140 transitions. [2021-07-13 20:59:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-13 20:59:26,152 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 [2021-07-13 20:59:26,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:26,173 INFO L225 Difference]: With dead ends: 10516 [2021-07-13 20:59:26,173 INFO L226 Difference]: Without dead ends: 10473 [2021-07-13 20:59:26,174 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 1562.9ms TimeCoverageRelationStatistics Valid=523, Invalid=5957, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 20:59:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2021-07-13 20:59:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 7034. [2021-07-13 20:59:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 3.4811602445613534) internal successors, (24483), 7033 states have internal predecessors, (24483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 24483 transitions. [2021-07-13 20:59:26,306 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 24483 transitions. Word has length 39 [2021-07-13 20:59:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:26,306 INFO L482 AbstractCegarLoop]: Abstraction has 7034 states and 24483 transitions. [2021-07-13 20:59:26,306 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) [2021-07-13 20:59:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 24483 transitions. [2021-07-13 20:59:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:26,317 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:26,317 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:26,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-07-13 20:59:26,317 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1915392114, now seen corresponding path program 182 times [2021-07-13 20:59:26,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:26,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060558498] [2021-07-13 20:59:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:26,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:26,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060558498] [2021-07-13 20:59:26,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060558498] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:26,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:26,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:26,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448654063] [2021-07-13 20:59:26,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:26,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:26,503 INFO L87 Difference]: Start difference. First operand 7034 states and 24483 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) [2021-07-13 20:59:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:29,458 INFO L93 Difference]: Finished difference Result 11758 states and 40313 transitions. [2021-07-13 20:59:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-13 20:59:29,458 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 [2021-07-13 20:59:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:29,480 INFO L225 Difference]: With dead ends: 11758 [2021-07-13 20:59:29,480 INFO L226 Difference]: Without dead ends: 11706 [2021-07-13 20:59:29,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2400 ImplicationChecksByTransitivity, 1758.7ms TimeCoverageRelationStatistics Valid=565, Invalid=7091, Unknown=0, NotChecked=0, Total=7656 [2021-07-13 20:59:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2021-07-13 20:59:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 7027. [2021-07-13 20:59:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 7026 states have (on average 3.480927981781953) internal successors, (24457), 7026 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 24457 transitions. [2021-07-13 20:59:29,615 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 24457 transitions. Word has length 39 [2021-07-13 20:59:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:29,615 INFO L482 AbstractCegarLoop]: Abstraction has 7027 states and 24457 transitions. [2021-07-13 20:59:29,615 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) [2021-07-13 20:59:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 24457 transitions. [2021-07-13 20:59:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:29,626 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:29,626 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:29,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-07-13 20:59:29,626 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:29,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1672213042, now seen corresponding path program 183 times [2021-07-13 20:59:29,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:29,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949886790] [2021-07-13 20:59:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:29,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:29,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949886790] [2021-07-13 20:59:29,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949886790] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:29,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:29,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:29,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997773693] [2021-07-13 20:59:29,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:29,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:29,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:29,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:29,826 INFO L87 Difference]: Start difference. First operand 7027 states and 24457 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) [2021-07-13 20:59:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:31,437 INFO L93 Difference]: Finished difference Result 9525 states and 32721 transitions. [2021-07-13 20:59:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 20:59:31,437 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 [2021-07-13 20:59:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:31,456 INFO L225 Difference]: With dead ends: 9525 [2021-07-13 20:59:31,456 INFO L226 Difference]: Without dead ends: 9482 [2021-07-13 20:59:31,456 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 882.4ms TimeCoverageRelationStatistics Valid=277, Invalid=2585, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:59:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2021-07-13 20:59:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 7036. [2021-07-13 20:59:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 7035 states have (on average 3.4794598436389483) internal successors, (24478), 7035 states have internal predecessors, (24478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 24478 transitions. [2021-07-13 20:59:31,616 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 24478 transitions. Word has length 39 [2021-07-13 20:59:31,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:31,616 INFO L482 AbstractCegarLoop]: Abstraction has 7036 states and 24478 transitions. [2021-07-13 20:59:31,616 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) [2021-07-13 20:59:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 24478 transitions. [2021-07-13 20:59:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:31,627 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:31,627 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:31,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-07-13 20:59:31,627 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash 77894094, now seen corresponding path program 184 times [2021-07-13 20:59:31,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:31,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221418249] [2021-07-13 20:59:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:31,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:31,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221418249] [2021-07-13 20:59:31,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221418249] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:31,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:31,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:31,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047802301] [2021-07-13 20:59:31,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:31,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:31,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:31,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:31,815 INFO L87 Difference]: Start difference. First operand 7036 states and 24478 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) [2021-07-13 20:59:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:33,518 INFO L93 Difference]: Finished difference Result 9473 states and 32596 transitions. [2021-07-13 20:59:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 20:59:33,518 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 [2021-07-13 20:59:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:33,540 INFO L225 Difference]: With dead ends: 9473 [2021-07-13 20:59:33,540 INFO L226 Difference]: Without dead ends: 9422 [2021-07-13 20:59:33,541 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 918.1ms TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 20:59:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9422 states. [2021-07-13 20:59:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9422 to 7030. [2021-07-13 20:59:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7030 states, 7029 states have (on average 3.480153649167734) internal successors, (24462), 7029 states have internal predecessors, (24462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 24462 transitions. [2021-07-13 20:59:33,703 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 24462 transitions. Word has length 39 [2021-07-13 20:59:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:33,703 INFO L482 AbstractCegarLoop]: Abstraction has 7030 states and 24462 transitions. [2021-07-13 20:59:33,703 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) [2021-07-13 20:59:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 24462 transitions. [2021-07-13 20:59:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:33,713 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:33,713 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:33,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-07-13 20:59:33,713 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:33,714 INFO L82 PathProgramCache]: Analyzing trace with hash 695112496, now seen corresponding path program 185 times [2021-07-13 20:59:33,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:33,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131189683] [2021-07-13 20:59:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:33,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:33,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131189683] [2021-07-13 20:59:33,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131189683] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:33,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:33,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:33,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657519296] [2021-07-13 20:59:33,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:33,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:33,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:33,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:33,907 INFO L87 Difference]: Start difference. First operand 7030 states and 24462 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) [2021-07-13 20:59:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:35,833 INFO L93 Difference]: Finished difference Result 10649 states and 36563 transitions. [2021-07-13 20:59:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 20:59:35,833 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 [2021-07-13 20:59:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:35,854 INFO L225 Difference]: With dead ends: 10649 [2021-07-13 20:59:35,855 INFO L226 Difference]: Without dead ends: 10603 [2021-07-13 20:59:35,855 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1007.2ms TimeCoverageRelationStatistics Valid=305, Invalid=3117, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 20:59:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10603 states. [2021-07-13 20:59:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10603 to 7037. [2021-07-13 20:59:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7037 states, 7036 states have (on average 3.4788231949971573) internal successors, (24477), 7036 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 24477 transitions. [2021-07-13 20:59:36,027 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 24477 transitions. Word has length 39 [2021-07-13 20:59:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:36,027 INFO L482 AbstractCegarLoop]: Abstraction has 7037 states and 24477 transitions. [2021-07-13 20:59:36,027 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) [2021-07-13 20:59:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 24477 transitions. [2021-07-13 20:59:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:36,037 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:36,037 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:36,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-07-13 20:59:36,038 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:36,038 INFO L82 PathProgramCache]: Analyzing trace with hash -739954994, now seen corresponding path program 186 times [2021-07-13 20:59:36,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:36,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176489752] [2021-07-13 20:59:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:36,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:36,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176489752] [2021-07-13 20:59:36,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176489752] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:36,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:36,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:36,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846296724] [2021-07-13 20:59:36,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:36,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:36,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:36,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:36,227 INFO L87 Difference]: Start difference. First operand 7037 states and 24477 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) [2021-07-13 20:59:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:37,877 INFO L93 Difference]: Finished difference Result 9405 states and 32431 transitions. [2021-07-13 20:59:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 20:59:37,877 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 [2021-07-13 20:59:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:37,896 INFO L225 Difference]: With dead ends: 9405 [2021-07-13 20:59:37,896 INFO L226 Difference]: Without dead ends: 9338 [2021-07-13 20:59:37,896 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 896.8ms TimeCoverageRelationStatistics Valid=275, Invalid=2587, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:59:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2021-07-13 20:59:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 7021. [2021-07-13 20:59:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7020 states have (on average 3.4821937321937324) internal successors, (24445), 7020 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 24445 transitions. [2021-07-13 20:59:38,061 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 24445 transitions. Word has length 39 [2021-07-13 20:59:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:38,061 INFO L482 AbstractCegarLoop]: Abstraction has 7021 states and 24445 transitions. [2021-07-13 20:59:38,061 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) [2021-07-13 20:59:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 24445 transitions. [2021-07-13 20:59:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:38,071 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:38,071 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:38,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-07-13 20:59:38,072 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:38,072 INFO L82 PathProgramCache]: Analyzing trace with hash 895259678, now seen corresponding path program 187 times [2021-07-13 20:59:38,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:38,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113416030] [2021-07-13 20:59:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:38,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:38,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113416030] [2021-07-13 20:59:38,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113416030] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:38,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:38,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:38,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107699799] [2021-07-13 20:59:38,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:38,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:38,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:38,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:38,259 INFO L87 Difference]: Start difference. First operand 7021 states and 24445 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) [2021-07-13 20:59:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:39,866 INFO L93 Difference]: Finished difference Result 9501 states and 32677 transitions. [2021-07-13 20:59:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 20:59:39,866 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 [2021-07-13 20:59:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:39,885 INFO L225 Difference]: With dead ends: 9501 [2021-07-13 20:59:39,885 INFO L226 Difference]: Without dead ends: 9438 [2021-07-13 20:59:39,886 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 863.9ms TimeCoverageRelationStatistics Valid=279, Invalid=2583, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:59:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-07-13 20:59:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 7025. [2021-07-13 20:59:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7025 states, 7024 states have (on average 3.481634396355353) internal successors, (24455), 7024 states have internal predecessors, (24455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 24455 transitions. [2021-07-13 20:59:40,008 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 24455 transitions. Word has length 39 [2021-07-13 20:59:40,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:40,008 INFO L482 AbstractCegarLoop]: Abstraction has 7025 states and 24455 transitions. [2021-07-13 20:59:40,008 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) [2021-07-13 20:59:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 24455 transitions. [2021-07-13 20:59:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:40,067 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:40,067 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:40,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-07-13 20:59:40,067 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:40,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1012350814, now seen corresponding path program 188 times [2021-07-13 20:59:40,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:40,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974812113] [2021-07-13 20:59:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:40,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:40,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974812113] [2021-07-13 20:59:40,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974812113] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:40,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:40,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:40,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833211659] [2021-07-13 20:59:40,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:40,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:40,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:40,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:40,252 INFO L87 Difference]: Start difference. First operand 7025 states and 24455 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) [2021-07-13 20:59:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:41,815 INFO L93 Difference]: Finished difference Result 9554 states and 32803 transitions. [2021-07-13 20:59:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 20:59:41,815 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 [2021-07-13 20:59:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:41,834 INFO L225 Difference]: With dead ends: 9554 [2021-07-13 20:59:41,834 INFO L226 Difference]: Without dead ends: 9511 [2021-07-13 20:59:41,835 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 833.4ms TimeCoverageRelationStatistics Valid=266, Invalid=2490, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 20:59:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9511 states. [2021-07-13 20:59:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9511 to 7043. [2021-07-13 20:59:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7043 states, 7042 states have (on average 3.478273217835842) internal successors, (24494), 7042 states have internal predecessors, (24494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7043 states to 7043 states and 24494 transitions. [2021-07-13 20:59:41,956 INFO L78 Accepts]: Start accepts. Automaton has 7043 states and 24494 transitions. Word has length 39 [2021-07-13 20:59:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:41,956 INFO L482 AbstractCegarLoop]: Abstraction has 7043 states and 24494 transitions. [2021-07-13 20:59:41,956 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) [2021-07-13 20:59:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7043 states and 24494 transitions. [2021-07-13 20:59:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:41,966 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:41,966 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:41,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-07-13 20:59:41,966 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 737756322, now seen corresponding path program 189 times [2021-07-13 20:59:41,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:41,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512535017] [2021-07-13 20:59:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:42,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:42,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512535017] [2021-07-13 20:59:42,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512535017] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:42,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:42,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:42,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270560260] [2021-07-13 20:59:42,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:42,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:42,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:42,187 INFO L87 Difference]: Start difference. First operand 7043 states and 24494 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) [2021-07-13 20:59:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:43,778 INFO L93 Difference]: Finished difference Result 9423 states and 32487 transitions. [2021-07-13 20:59:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 20:59:43,778 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 [2021-07-13 20:59:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:43,797 INFO L225 Difference]: With dead ends: 9423 [2021-07-13 20:59:43,797 INFO L226 Difference]: Without dead ends: 9360 [2021-07-13 20:59:43,797 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 878.8ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 20:59:43,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2021-07-13 20:59:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 7025. [2021-07-13 20:59:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7025 states, 7024 states have (on average 3.4810649202733486) internal successors, (24451), 7024 states have internal predecessors, (24451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 24451 transitions. [2021-07-13 20:59:43,917 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 24451 transitions. Word has length 39 [2021-07-13 20:59:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:43,917 INFO L482 AbstractCegarLoop]: Abstraction has 7025 states and 24451 transitions. [2021-07-13 20:59:43,918 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) [2021-07-13 20:59:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 24451 transitions. [2021-07-13 20:59:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:43,928 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:43,928 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:43,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-07-13 20:59:43,928 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1011626978, now seen corresponding path program 190 times [2021-07-13 20:59:43,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:43,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722044578] [2021-07-13 20:59:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:44,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:44,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722044578] [2021-07-13 20:59:44,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722044578] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:44,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:44,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:44,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978285013] [2021-07-13 20:59:44,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:44,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:44,132 INFO L87 Difference]: Start difference. First operand 7025 states and 24451 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) [2021-07-13 20:59:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:45,845 INFO L93 Difference]: Finished difference Result 9507 states and 32702 transitions. [2021-07-13 20:59:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-13 20:59:45,845 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 [2021-07-13 20:59:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:45,864 INFO L225 Difference]: With dead ends: 9507 [2021-07-13 20:59:45,864 INFO L226 Difference]: Without dead ends: 9452 [2021-07-13 20:59:45,864 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 946.0ms TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 20:59:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2021-07-13 20:59:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 7027. [2021-07-13 20:59:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 7026 states have (on average 3.4807856532877883) internal successors, (24456), 7026 states have internal predecessors, (24456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 24456 transitions. [2021-07-13 20:59:45,986 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 24456 transitions. Word has length 39 [2021-07-13 20:59:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:45,986 INFO L482 AbstractCegarLoop]: Abstraction has 7027 states and 24456 transitions. [2021-07-13 20:59:45,986 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) [2021-07-13 20:59:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 24456 transitions. [2021-07-13 20:59:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:45,996 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:45,996 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:45,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-07-13 20:59:45,996 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:45,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:45,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1782465792, now seen corresponding path program 191 times [2021-07-13 20:59:45,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:45,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522179990] [2021-07-13 20:59:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:46,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:46,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522179990] [2021-07-13 20:59:46,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522179990] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:46,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:46,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:46,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490804530] [2021-07-13 20:59:46,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:46,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:46,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:46,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:46,180 INFO L87 Difference]: Start difference. First operand 7027 states and 24456 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) [2021-07-13 20:59:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:47,805 INFO L93 Difference]: Finished difference Result 9483 states and 32632 transitions. [2021-07-13 20:59:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 20:59:47,806 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 [2021-07-13 20:59:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:47,825 INFO L225 Difference]: With dead ends: 9483 [2021-07-13 20:59:47,825 INFO L226 Difference]: Without dead ends: 9440 [2021-07-13 20:59:47,826 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 870.6ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 20:59:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9440 states. [2021-07-13 20:59:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9440 to 7033. [2021-07-13 20:59:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7033 states, 7032 states have (on average 3.4796643913538112) internal successors, (24469), 7032 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7033 states to 7033 states and 24469 transitions. [2021-07-13 20:59:47,955 INFO L78 Accepts]: Start accepts. Automaton has 7033 states and 24469 transitions. Word has length 39 [2021-07-13 20:59:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:47,955 INFO L482 AbstractCegarLoop]: Abstraction has 7033 states and 24469 transitions. [2021-07-13 20:59:47,955 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) [2021-07-13 20:59:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7033 states and 24469 transitions. [2021-07-13 20:59:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:47,965 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:47,965 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:47,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-07-13 20:59:47,966 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:47,966 INFO L82 PathProgramCache]: Analyzing trace with hash -532128320, now seen corresponding path program 192 times [2021-07-13 20:59:47,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:47,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614880106] [2021-07-13 20:59:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:48,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:48,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614880106] [2021-07-13 20:59:48,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614880106] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:48,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:48,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:48,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662795212] [2021-07-13 20:59:48,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:48,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:48,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:48,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:48,156 INFO L87 Difference]: Start difference. First operand 7033 states and 24469 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) [2021-07-13 20:59:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:49,805 INFO L93 Difference]: Finished difference Result 9417 states and 32470 transitions. [2021-07-13 20:59:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 20:59:49,805 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 [2021-07-13 20:59:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:49,823 INFO L225 Difference]: With dead ends: 9417 [2021-07-13 20:59:49,823 INFO L226 Difference]: Without dead ends: 9356 [2021-07-13 20:59:49,824 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 866.3ms TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 20:59:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2021-07-13 20:59:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 7021. [2021-07-13 20:59:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7020 states have (on average 3.481908831908832) internal successors, (24443), 7020 states have internal predecessors, (24443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 24443 transitions. [2021-07-13 20:59:49,942 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 24443 transitions. Word has length 39 [2021-07-13 20:59:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:49,942 INFO L482 AbstractCegarLoop]: Abstraction has 7021 states and 24443 transitions. [2021-07-13 20:59:49,942 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) [2021-07-13 20:59:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 24443 transitions. [2021-07-13 20:59:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:49,953 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:49,953 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:49,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-07-13 20:59:49,953 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash 806128674, now seen corresponding path program 193 times [2021-07-13 20:59:49,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:49,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820128026] [2021-07-13 20:59:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:50,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:50,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820128026] [2021-07-13 20:59:50,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820128026] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:50,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:50,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:50,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33117322] [2021-07-13 20:59:50,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:50,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:50,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:50,134 INFO L87 Difference]: Start difference. First operand 7021 states and 24443 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) [2021-07-13 20:59:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:52,063 INFO L93 Difference]: Finished difference Result 9607 states and 32929 transitions. [2021-07-13 20:59:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-13 20:59:52,063 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 [2021-07-13 20:59:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:52,081 INFO L225 Difference]: With dead ends: 9607 [2021-07-13 20:59:52,081 INFO L226 Difference]: Without dead ends: 9552 [2021-07-13 20:59:52,082 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1110.7ms TimeCoverageRelationStatistics Valid=373, Invalid=3533, Unknown=0, NotChecked=0, Total=3906 [2021-07-13 20:59:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2021-07-13 20:59:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 7026. [2021-07-13 20:59:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7025 states have (on average 3.4811387900355872) internal successors, (24455), 7025 states have internal predecessors, (24455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 24455 transitions. [2021-07-13 20:59:52,202 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 24455 transitions. Word has length 39 [2021-07-13 20:59:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:52,202 INFO L482 AbstractCegarLoop]: Abstraction has 7026 states and 24455 transitions. [2021-07-13 20:59:52,202 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) [2021-07-13 20:59:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 24455 transitions. [2021-07-13 20:59:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:52,212 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:52,212 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:52,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-07-13 20:59:52,212 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:52,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1978780896, now seen corresponding path program 194 times [2021-07-13 20:59:52,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:52,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763582] [2021-07-13 20:59:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:52,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:52,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763582] [2021-07-13 20:59:52,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763582] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:52,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:52,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:52,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935475482] [2021-07-13 20:59:52,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:52,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:52,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:52,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:52,397 INFO L87 Difference]: Start difference. First operand 7026 states and 24455 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) [2021-07-13 20:59:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:54,508 INFO L93 Difference]: Finished difference Result 10787 states and 36895 transitions. [2021-07-13 20:59:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 20:59:54,508 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 [2021-07-13 20:59:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:54,529 INFO L225 Difference]: With dead ends: 10787 [2021-07-13 20:59:54,529 INFO L226 Difference]: Without dead ends: 10741 [2021-07-13 20:59:54,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1155.3ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-07-13 20:59:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2021-07-13 20:59:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 7032. [2021-07-13 20:59:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7031 states have (on average 3.4803015218318873) internal successors, (24470), 7031 states have internal predecessors, (24470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 24470 transitions. [2021-07-13 20:59:54,661 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 24470 transitions. Word has length 39 [2021-07-13 20:59:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:54,661 INFO L482 AbstractCegarLoop]: Abstraction has 7032 states and 24470 transitions. [2021-07-13 20:59:54,662 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) [2021-07-13 20:59:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 24470 transitions. [2021-07-13 20:59:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:54,671 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:54,672 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:54,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-07-13 20:59:54,672 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1731314734, now seen corresponding path program 195 times [2021-07-13 20:59:54,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:54,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132427134] [2021-07-13 20:59:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:54,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:54,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132427134] [2021-07-13 20:59:54,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132427134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:54,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:54,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:54,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005990791] [2021-07-13 20:59:54,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:54,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:54,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:54,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:54,862 INFO L87 Difference]: Start difference. First operand 7032 states and 24470 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) [2021-07-13 20:59:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:56,724 INFO L93 Difference]: Finished difference Result 9709 states and 33233 transitions. [2021-07-13 20:59:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-13 20:59:56,724 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 [2021-07-13 20:59:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:56,742 INFO L225 Difference]: With dead ends: 9709 [2021-07-13 20:59:56,743 INFO L226 Difference]: Without dead ends: 9664 [2021-07-13 20:59:56,743 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1071.6ms TimeCoverageRelationStatistics Valid=335, Invalid=3205, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:59:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2021-07-13 20:59:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 7030. [2021-07-13 20:59:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7030 states, 7029 states have (on average 3.48072272015934) internal successors, (24466), 7029 states have internal predecessors, (24466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 24466 transitions. [2021-07-13 20:59:56,868 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 24466 transitions. Word has length 39 [2021-07-13 20:59:56,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:56,868 INFO L482 AbstractCegarLoop]: Abstraction has 7030 states and 24466 transitions. [2021-07-13 20:59:56,868 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) [2021-07-13 20:59:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 24466 transitions. [2021-07-13 20:59:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:56,879 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:56,879 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:56,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-07-13 20:59:56,879 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1911036016, now seen corresponding path program 196 times [2021-07-13 20:59:56,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:56,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629962116] [2021-07-13 20:59:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:57,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:57,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629962116] [2021-07-13 20:59:57,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629962116] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:57,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:57,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:57,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073481026] [2021-07-13 20:59:57,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:57,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:57,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:57,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:57,059 INFO L87 Difference]: Start difference. First operand 7030 states and 24466 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) [2021-07-13 20:59:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:59:58,878 INFO L93 Difference]: Finished difference Result 9613 states and 32941 transitions. [2021-07-13 20:59:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-13 20:59:58,878 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 [2021-07-13 20:59:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:59:58,897 INFO L225 Difference]: With dead ends: 9613 [2021-07-13 20:59:58,897 INFO L226 Difference]: Without dead ends: 9570 [2021-07-13 20:59:58,898 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1042.2ms TimeCoverageRelationStatistics Valid=332, Invalid=3208, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 20:59:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2021-07-13 20:59:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 7039. [2021-07-13 20:59:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 3.4792554703040635) internal successors, (24487), 7038 states have internal predecessors, (24487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:59:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 24487 transitions. [2021-07-13 20:59:59,020 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 24487 transitions. Word has length 39 [2021-07-13 20:59:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:59:59,020 INFO L482 AbstractCegarLoop]: Abstraction has 7039 states and 24487 transitions. [2021-07-13 20:59:59,020 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) [2021-07-13 20:59:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 24487 transitions. [2021-07-13 20:59:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 20:59:59,030 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:59:59,030 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:59:59,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-07-13 20:59:59,030 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:59:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:59:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash -633824144, now seen corresponding path program 197 times [2021-07-13 20:59:59,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:59:59,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674561972] [2021-07-13 20:59:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:59:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:59:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:59:59,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:59:59,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674561972] [2021-07-13 20:59:59,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674561972] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:59:59,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:59:59,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 20:59:59,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656580692] [2021-07-13 20:59:59,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 20:59:59,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:59:59,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 20:59:59,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 20:59:59,209 INFO L87 Difference]: Start difference. First operand 7039 states and 24487 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) [2021-07-13 21:00:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:00,975 INFO L93 Difference]: Finished difference Result 9563 states and 32817 transitions. [2021-07-13 21:00:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 21:00:00,976 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 [2021-07-13 21:00:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:00,995 INFO L225 Difference]: With dead ends: 9563 [2021-07-13 21:00:00,995 INFO L226 Difference]: Without dead ends: 9512 [2021-07-13 21:00:00,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 948.0ms TimeCoverageRelationStatistics Valid=307, Invalid=2999, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 21:00:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2021-07-13 21:00:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 7039. [2021-07-13 21:00:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 3.478829212844558) internal successors, (24484), 7038 states have internal predecessors, (24484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 24484 transitions. [2021-07-13 21:00:01,115 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 24484 transitions. Word has length 39 [2021-07-13 21:00:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:01,116 INFO L482 AbstractCegarLoop]: Abstraction has 7039 states and 24484 transitions. [2021-07-13 21:00:01,116 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) [2021-07-13 21:00:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 24484 transitions. [2021-07-13 21:00:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:01,126 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:01,126 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:01,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-07-13 21:00:01,126 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:01,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:01,126 INFO L82 PathProgramCache]: Analyzing trace with hash -16605742, now seen corresponding path program 198 times [2021-07-13 21:00:01,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:01,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036465625] [2021-07-13 21:00:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:01,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:01,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036465625] [2021-07-13 21:00:01,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036465625] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:01,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:01,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:01,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046051273] [2021-07-13 21:00:01,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:01,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:01,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:01,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:01,322 INFO L87 Difference]: Start difference. First operand 7039 states and 24484 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) [2021-07-13 21:00:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:03,447 INFO L93 Difference]: Finished difference Result 10790 states and 36899 transitions. [2021-07-13 21:00:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-13 21:00:03,448 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 [2021-07-13 21:00:03,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:03,471 INFO L225 Difference]: With dead ends: 10790 [2021-07-13 21:00:03,471 INFO L226 Difference]: Without dead ends: 10744 [2021-07-13 21:00:03,472 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1140.4ms TimeCoverageRelationStatistics Valid=342, Invalid=3564, Unknown=0, NotChecked=0, Total=3906 [2021-07-13 21:00:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2021-07-13 21:00:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 7046. [2021-07-13 21:00:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 7045 states have (on average 3.4775017743080197) internal successors, (24499), 7045 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 24499 transitions. [2021-07-13 21:00:03,628 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 24499 transitions. Word has length 39 [2021-07-13 21:00:03,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:03,628 INFO L482 AbstractCegarLoop]: Abstraction has 7046 states and 24499 transitions. [2021-07-13 21:00:03,628 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) [2021-07-13 21:00:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 24499 transitions. [2021-07-13 21:00:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:03,639 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:03,639 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:03,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-07-13 21:00:03,639 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:03,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1451673232, now seen corresponding path program 199 times [2021-07-13 21:00:03,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:03,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434178066] [2021-07-13 21:00:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:03,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:03,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434178066] [2021-07-13 21:00:03,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434178066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:03,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:03,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:03,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452878996] [2021-07-13 21:00:03,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:03,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:03,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:03,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:03,821 INFO L87 Difference]: Start difference. First operand 7046 states and 24499 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) [2021-07-13 21:00:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:05,610 INFO L93 Difference]: Finished difference Result 9549 states and 32770 transitions. [2021-07-13 21:00:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-13 21:00:05,611 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 [2021-07-13 21:00:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:05,629 INFO L225 Difference]: With dead ends: 9549 [2021-07-13 21:00:05,629 INFO L226 Difference]: Without dead ends: 9494 [2021-07-13 21:00:05,630 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 982.9ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 21:00:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9494 states. [2021-07-13 21:00:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9494 to 7043. [2021-07-13 21:00:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7043 states, 7042 states have (on average 3.478131212723658) internal successors, (24493), 7042 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7043 states to 7043 states and 24493 transitions. [2021-07-13 21:00:05,752 INFO L78 Accepts]: Start accepts. Automaton has 7043 states and 24493 transitions. Word has length 39 [2021-07-13 21:00:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:05,752 INFO L482 AbstractCegarLoop]: Abstraction has 7043 states and 24493 transitions. [2021-07-13 21:00:05,752 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) [2021-07-13 21:00:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7043 states and 24493 transitions. [2021-07-13 21:00:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:05,762 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:05,762 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:05,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-07-13 21:00:05,762 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:05,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1560590946, now seen corresponding path program 200 times [2021-07-13 21:00:05,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:05,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149990134] [2021-07-13 21:00:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:05,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:05,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149990134] [2021-07-13 21:00:05,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149990134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:05,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:05,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:05,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311983631] [2021-07-13 21:00:05,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:05,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:05,957 INFO L87 Difference]: Start difference. First operand 7043 states and 24493 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) [2021-07-13 21:00:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:07,758 INFO L93 Difference]: Finished difference Result 9533 states and 32730 transitions. [2021-07-13 21:00:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 21:00:07,758 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 [2021-07-13 21:00:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:07,776 INFO L225 Difference]: With dead ends: 9533 [2021-07-13 21:00:07,776 INFO L226 Difference]: Without dead ends: 9476 [2021-07-13 21:00:07,777 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1005.2ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 21:00:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9476 states. [2021-07-13 21:00:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9476 to 7035. [2021-07-13 21:00:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7035 states, 7034 states have (on average 3.4793858402047197) internal successors, (24474), 7034 states have internal predecessors, (24474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7035 states to 7035 states and 24474 transitions. [2021-07-13 21:00:07,901 INFO L78 Accepts]: Start accepts. Automaton has 7035 states and 24474 transitions. Word has length 39 [2021-07-13 21:00:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:07,901 INFO L482 AbstractCegarLoop]: Abstraction has 7035 states and 24474 transitions. [2021-07-13 21:00:07,901 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) [2021-07-13 21:00:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7035 states and 24474 transitions. [2021-07-13 21:00:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:07,911 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:07,912 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:07,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-07-13 21:00:07,912 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:07,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1993644724, now seen corresponding path program 201 times [2021-07-13 21:00:07,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:07,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703445336] [2021-07-13 21:00:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:08,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:08,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703445336] [2021-07-13 21:00:08,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703445336] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:08,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:08,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:08,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079251361] [2021-07-13 21:00:08,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:08,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:08,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:08,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:08,094 INFO L87 Difference]: Start difference. First operand 7035 states and 24474 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) [2021-07-13 21:00:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:10,029 INFO L93 Difference]: Finished difference Result 9876 states and 33881 transitions. [2021-07-13 21:00:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 21:00:10,030 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 [2021-07-13 21:00:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:10,049 INFO L225 Difference]: With dead ends: 9876 [2021-07-13 21:00:10,049 INFO L226 Difference]: Without dead ends: 9833 [2021-07-13 21:00:10,049 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 1038.3ms TimeCoverageRelationStatistics Valid=322, Invalid=3218, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 21:00:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-07-13 21:00:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 7031. [2021-07-13 21:00:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7031 states, 7030 states have (on average 3.4799431009957327) internal successors, (24464), 7030 states have internal predecessors, (24464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 24464 transitions. [2021-07-13 21:00:10,177 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 24464 transitions. Word has length 39 [2021-07-13 21:00:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:10,177 INFO L482 AbstractCegarLoop]: Abstraction has 7031 states and 24464 transitions. [2021-07-13 21:00:10,177 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) [2021-07-13 21:00:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 24464 transitions. [2021-07-13 21:00:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:10,188 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:10,188 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:10,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-07-13 21:00:10,188 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash -156887234, now seen corresponding path program 202 times [2021-07-13 21:00:10,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:10,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242645091] [2021-07-13 21:00:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:10,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:10,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242645091] [2021-07-13 21:00:10,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242645091] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:10,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:10,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:10,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833942653] [2021-07-13 21:00:10,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:10,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:10,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:10,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:10,393 INFO L87 Difference]: Start difference. First operand 7031 states and 24464 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) [2021-07-13 21:00:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:12,263 INFO L93 Difference]: Finished difference Result 9712 states and 33413 transitions. [2021-07-13 21:00:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-13 21:00:12,263 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 [2021-07-13 21:00:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:12,282 INFO L225 Difference]: With dead ends: 9712 [2021-07-13 21:00:12,282 INFO L226 Difference]: Without dead ends: 9649 [2021-07-13 21:00:12,282 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 996.4ms TimeCoverageRelationStatistics Valid=304, Invalid=3002, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 21:00:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-13 21:00:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 7019. [2021-07-13 21:00:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.482331148475349) internal successors, (24439), 7018 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24439 transitions. [2021-07-13 21:00:12,404 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24439 transitions. Word has length 39 [2021-07-13 21:00:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:12,404 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24439 transitions. [2021-07-13 21:00:12,404 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) [2021-07-13 21:00:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24439 transitions. [2021-07-13 21:00:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:12,415 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:12,415 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:12,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-07-13 21:00:12,415 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash 888629100, now seen corresponding path program 203 times [2021-07-13 21:00:12,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:12,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093230961] [2021-07-13 21:00:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:12,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:12,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093230961] [2021-07-13 21:00:12,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093230961] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:12,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:12,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:12,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929168291] [2021-07-13 21:00:12,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:12,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:12,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:12,600 INFO L87 Difference]: Start difference. First operand 7019 states and 24439 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) [2021-07-13 21:00:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:14,090 INFO L93 Difference]: Finished difference Result 9263 states and 32060 transitions. [2021-07-13 21:00:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 21:00:14,090 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 [2021-07-13 21:00:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:14,109 INFO L225 Difference]: With dead ends: 9263 [2021-07-13 21:00:14,109 INFO L226 Difference]: Without dead ends: 9200 [2021-07-13 21:00:14,109 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 736.7ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 21:00:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2021-07-13 21:00:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 7051. [2021-07-13 21:00:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 3.4784397163120566) internal successors, (24523), 7050 states have internal predecessors, (24523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 24523 transitions. [2021-07-13 21:00:14,237 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 24523 transitions. Word has length 39 [2021-07-13 21:00:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:14,237 INFO L482 AbstractCegarLoop]: Abstraction has 7051 states and 24523 transitions. [2021-07-13 21:00:14,237 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) [2021-07-13 21:00:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 24523 transitions. [2021-07-13 21:00:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:14,248 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:14,248 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:14,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-07-13 21:00:14,248 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash 953262606, now seen corresponding path program 204 times [2021-07-13 21:00:14,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:14,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561799117] [2021-07-13 21:00:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:14,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:14,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561799117] [2021-07-13 21:00:14,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561799117] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:14,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:14,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:14,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936398981] [2021-07-13 21:00:14,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:14,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:14,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:14,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:14,432 INFO L87 Difference]: Start difference. First operand 7051 states and 24523 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) [2021-07-13 21:00:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:15,915 INFO L93 Difference]: Finished difference Result 9246 states and 32034 transitions. [2021-07-13 21:00:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 21:00:15,916 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 [2021-07-13 21:00:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:15,975 INFO L225 Difference]: With dead ends: 9246 [2021-07-13 21:00:15,975 INFO L226 Difference]: Without dead ends: 9123 [2021-07-13 21:00:15,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 753.7ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 21:00:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2021-07-13 21:00:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 7019. [2021-07-13 21:00:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.480051296665717) internal successors, (24423), 7018 states have internal predecessors, (24423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24423 transitions. [2021-07-13 21:00:16,097 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24423 transitions. Word has length 39 [2021-07-13 21:00:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:16,097 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24423 transitions. [2021-07-13 21:00:16,097 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) [2021-07-13 21:00:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24423 transitions. [2021-07-13 21:00:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:16,107 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:16,107 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:16,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-07-13 21:00:16,108 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1049848054, now seen corresponding path program 205 times [2021-07-13 21:00:16,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:16,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27689248] [2021-07-13 21:00:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:16,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:16,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27689248] [2021-07-13 21:00:16,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27689248] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:16,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:16,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:16,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673056440] [2021-07-13 21:00:16,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:16,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:16,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:16,320 INFO L87 Difference]: Start difference. First operand 7019 states and 24423 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) [2021-07-13 21:00:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:17,839 INFO L93 Difference]: Finished difference Result 9306 states and 32141 transitions. [2021-07-13 21:00:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 21:00:17,840 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 [2021-07-13 21:00:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:17,861 INFO L225 Difference]: With dead ends: 9306 [2021-07-13 21:00:17,861 INFO L226 Difference]: Without dead ends: 9243 [2021-07-13 21:00:17,861 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 765.9ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 21:00:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2021-07-13 21:00:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 7019. [2021-07-13 21:00:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.479481333713309) internal successors, (24419), 7018 states have internal predecessors, (24419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24419 transitions. [2021-07-13 21:00:18,067 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24419 transitions. Word has length 39 [2021-07-13 21:00:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:18,067 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24419 transitions. [2021-07-13 21:00:18,067 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) [2021-07-13 21:00:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24419 transitions. [2021-07-13 21:00:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:18,079 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:18,079 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:18,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-07-13 21:00:18,079 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:18,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1337508750, now seen corresponding path program 206 times [2021-07-13 21:00:18,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:18,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216171977] [2021-07-13 21:00:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:18,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:18,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216171977] [2021-07-13 21:00:18,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216171977] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:18,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:18,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:18,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580785796] [2021-07-13 21:00:18,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:18,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:18,269 INFO L87 Difference]: Start difference. First operand 7019 states and 24419 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) [2021-07-13 21:00:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:19,733 INFO L93 Difference]: Finished difference Result 9282 states and 32081 transitions. [2021-07-13 21:00:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 21:00:19,733 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 [2021-07-13 21:00:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:19,752 INFO L225 Difference]: With dead ends: 9282 [2021-07-13 21:00:19,752 INFO L226 Difference]: Without dead ends: 9239 [2021-07-13 21:00:19,753 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 733.3ms TimeCoverageRelationStatistics Valid=215, Invalid=2041, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 21:00:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2021-07-13 21:00:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7025. [2021-07-13 21:00:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7025 states, 7024 states have (on average 3.478359908883827) internal successors, (24432), 7024 states have internal predecessors, (24432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 24432 transitions. [2021-07-13 21:00:19,871 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 24432 transitions. Word has length 39 [2021-07-13 21:00:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:19,872 INFO L482 AbstractCegarLoop]: Abstraction has 7025 states and 24432 transitions. [2021-07-13 21:00:19,872 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) [2021-07-13 21:00:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 24432 transitions. [2021-07-13 21:00:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:19,883 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:19,883 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:19,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-07-13 21:00:19,883 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:19,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1207351410, now seen corresponding path program 207 times [2021-07-13 21:00:19,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:19,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141168139] [2021-07-13 21:00:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:20,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:20,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141168139] [2021-07-13 21:00:20,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141168139] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:20,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:20,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:20,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513442488] [2021-07-13 21:00:20,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:20,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:20,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:20,132 INFO L87 Difference]: Start difference. First operand 7025 states and 24432 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) [2021-07-13 21:00:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:21,556 INFO L93 Difference]: Finished difference Result 9237 states and 31977 transitions. [2021-07-13 21:00:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 21:00:21,556 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 [2021-07-13 21:00:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:21,576 INFO L225 Difference]: With dead ends: 9237 [2021-07-13 21:00:21,576 INFO L226 Difference]: Without dead ends: 9174 [2021-07-13 21:00:21,576 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 752.4ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 21:00:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9174 states. [2021-07-13 21:00:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9174 to 7007. [2021-07-13 21:00:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 3.4811590065658007) internal successors, (24389), 7006 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 24389 transitions. [2021-07-13 21:00:21,700 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 24389 transitions. Word has length 39 [2021-07-13 21:00:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:21,700 INFO L482 AbstractCegarLoop]: Abstraction has 7007 states and 24389 transitions. [2021-07-13 21:00:21,700 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) [2021-07-13 21:00:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 24389 transitions. [2021-07-13 21:00:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:21,710 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:21,710 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:21,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-07-13 21:00:21,711 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:21,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:21,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1338232586, now seen corresponding path program 208 times [2021-07-13 21:00:21,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:21,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733415897] [2021-07-13 21:00:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:21,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:21,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733415897] [2021-07-13 21:00:21,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733415897] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:21,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:21,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:21,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878532015] [2021-07-13 21:00:21,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:21,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:21,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:21,895 INFO L87 Difference]: Start difference. First operand 7007 states and 24389 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) [2021-07-13 21:00:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:23,452 INFO L93 Difference]: Finished difference Result 9300 states and 32134 transitions. [2021-07-13 21:00:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 21:00:23,452 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 [2021-07-13 21:00:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:23,471 INFO L225 Difference]: With dead ends: 9300 [2021-07-13 21:00:23,471 INFO L226 Difference]: Without dead ends: 9245 [2021-07-13 21:00:23,472 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 808.0ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 21:00:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9245 states. [2021-07-13 21:00:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9245 to 7009. [2021-07-13 21:00:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7008 states have (on average 3.4808789954337898) internal successors, (24394), 7008 states have internal predecessors, (24394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 24394 transitions. [2021-07-13 21:00:23,594 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 24394 transitions. Word has length 39 [2021-07-13 21:00:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:23,594 INFO L482 AbstractCegarLoop]: Abstraction has 7009 states and 24394 transitions. [2021-07-13 21:00:23,594 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) [2021-07-13 21:00:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 24394 transitions. [2021-07-13 21:00:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:23,605 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:23,605 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:23,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-07-13 21:00:23,605 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash -162641940, now seen corresponding path program 209 times [2021-07-13 21:00:23,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:23,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742234314] [2021-07-13 21:00:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:23,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:23,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742234314] [2021-07-13 21:00:23,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742234314] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:23,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:23,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:23,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533423309] [2021-07-13 21:00:23,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:23,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:23,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:23,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:23,800 INFO L87 Difference]: Start difference. First operand 7009 states and 24394 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) [2021-07-13 21:00:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:25,296 INFO L93 Difference]: Finished difference Result 9276 states and 32064 transitions. [2021-07-13 21:00:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 21:00:25,296 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 [2021-07-13 21:00:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:25,315 INFO L225 Difference]: With dead ends: 9276 [2021-07-13 21:00:25,315 INFO L226 Difference]: Without dead ends: 9233 [2021-07-13 21:00:25,315 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 759.8ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 21:00:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2021-07-13 21:00:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 7015. [2021-07-13 21:00:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7015 states, 7014 states have (on average 3.4797547761619616) internal successors, (24407), 7014 states have internal predecessors, (24407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 24407 transitions. [2021-07-13 21:00:25,436 INFO L78 Accepts]: Start accepts. Automaton has 7015 states and 24407 transitions. Word has length 39 [2021-07-13 21:00:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:25,436 INFO L482 AbstractCegarLoop]: Abstraction has 7015 states and 24407 transitions. [2021-07-13 21:00:25,437 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) [2021-07-13 21:00:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states and 24407 transitions. [2021-07-13 21:00:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:25,447 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:25,447 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:25,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-07-13 21:00:25,447 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1817731244, now seen corresponding path program 210 times [2021-07-13 21:00:25,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:25,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096846170] [2021-07-13 21:00:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:25,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:25,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096846170] [2021-07-13 21:00:25,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096846170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:25,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:25,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:25,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896510455] [2021-07-13 21:00:25,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:25,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:25,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:25,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:25,629 INFO L87 Difference]: Start difference. First operand 7015 states and 24407 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) [2021-07-13 21:00:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:27,086 INFO L93 Difference]: Finished difference Result 9231 states and 31960 transitions. [2021-07-13 21:00:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 21:00:27,086 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 [2021-07-13 21:00:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:27,104 INFO L225 Difference]: With dead ends: 9231 [2021-07-13 21:00:27,104 INFO L226 Difference]: Without dead ends: 9170 [2021-07-13 21:00:27,104 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 719.4ms TimeCoverageRelationStatistics Valid=215, Invalid=2041, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 21:00:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9170 states. [2021-07-13 21:00:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9170 to 7003. [2021-07-13 21:00:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7003 states, 7002 states have (on average 3.4817195087117967) internal successors, (24379), 7002 states have internal predecessors, (24379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 24379 transitions. [2021-07-13 21:00:27,227 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 24379 transitions. Word has length 39 [2021-07-13 21:00:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:27,227 INFO L482 AbstractCegarLoop]: Abstraction has 7003 states and 24379 transitions. [2021-07-13 21:00:27,228 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) [2021-07-13 21:00:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 24379 transitions. [2021-07-13 21:00:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:27,239 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:27,239 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:27,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-07-13 21:00:27,239 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1969318414, now seen corresponding path program 211 times [2021-07-13 21:00:27,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:27,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022699328] [2021-07-13 21:00:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:27,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:27,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022699328] [2021-07-13 21:00:27,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022699328] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:27,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:27,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:27,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739542779] [2021-07-13 21:00:27,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:27,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:27,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:27,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:27,422 INFO L87 Difference]: Start difference. First operand 7003 states and 24379 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) [2021-07-13 21:00:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:28,893 INFO L93 Difference]: Finished difference Result 9226 states and 31982 transitions. [2021-07-13 21:00:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 21:00:28,893 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 [2021-07-13 21:00:28,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:28,912 INFO L225 Difference]: With dead ends: 9226 [2021-07-13 21:00:28,912 INFO L226 Difference]: Without dead ends: 9135 [2021-07-13 21:00:28,912 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 754.3ms TimeCoverageRelationStatistics Valid=236, Invalid=2214, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 21:00:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2021-07-13 21:00:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 7009. [2021-07-13 21:00:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7008 states have (on average 3.4808789954337898) internal successors, (24394), 7008 states have internal predecessors, (24394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 24394 transitions. [2021-07-13 21:00:29,070 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 24394 transitions. Word has length 39 [2021-07-13 21:00:29,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:29,070 INFO L482 AbstractCegarLoop]: Abstraction has 7009 states and 24394 transitions. [2021-07-13 21:00:29,070 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) [2021-07-13 21:00:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 24394 transitions. [2021-07-13 21:00:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:29,080 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:29,081 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:29,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-07-13 21:00:29,081 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:29,081 INFO L82 PathProgramCache]: Analyzing trace with hash -973477588, now seen corresponding path program 212 times [2021-07-13 21:00:29,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:29,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535180999] [2021-07-13 21:00:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:29,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:29,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535180999] [2021-07-13 21:00:29,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535180999] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:29,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:29,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:29,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941575650] [2021-07-13 21:00:29,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:29,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:29,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:29,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:29,262 INFO L87 Difference]: Start difference. First operand 7009 states and 24394 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) [2021-07-13 21:00:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:30,819 INFO L93 Difference]: Finished difference Result 9257 states and 32029 transitions. [2021-07-13 21:00:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 21:00:30,819 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 [2021-07-13 21:00:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:30,839 INFO L225 Difference]: With dead ends: 9257 [2021-07-13 21:00:30,839 INFO L226 Difference]: Without dead ends: 9202 [2021-07-13 21:00:30,840 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 804.7ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 21:00:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2021-07-13 21:00:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 7011. [2021-07-13 21:00:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7011 states, 7010 states have (on average 3.480599144079886) internal successors, (24399), 7010 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 24399 transitions. [2021-07-13 21:00:30,961 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 24399 transitions. Word has length 39 [2021-07-13 21:00:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:30,961 INFO L482 AbstractCegarLoop]: Abstraction has 7011 states and 24399 transitions. [2021-07-13 21:00:30,961 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) [2021-07-13 21:00:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 24399 transitions. [2021-07-13 21:00:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:30,971 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:30,972 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:30,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-07-13 21:00:30,972 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1820615182, now seen corresponding path program 213 times [2021-07-13 21:00:30,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:30,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717283702] [2021-07-13 21:00:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:31,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:31,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717283702] [2021-07-13 21:00:31,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717283702] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:31,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:31,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:31,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705839946] [2021-07-13 21:00:31,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:31,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:31,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:31,203 INFO L87 Difference]: Start difference. First operand 7011 states and 24399 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) [2021-07-13 21:00:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:32,673 INFO L93 Difference]: Finished difference Result 9233 states and 31959 transitions. [2021-07-13 21:00:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 21:00:32,674 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 [2021-07-13 21:00:32,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:32,692 INFO L225 Difference]: With dead ends: 9233 [2021-07-13 21:00:32,692 INFO L226 Difference]: Without dead ends: 9190 [2021-07-13 21:00:32,692 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 799.7ms TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 21:00:32,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2021-07-13 21:00:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 7017. [2021-07-13 21:00:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7017 states, 7016 states have (on average 3.4794754846066134) internal successors, (24412), 7016 states have internal predecessors, (24412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 24412 transitions. [2021-07-13 21:00:32,813 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 24412 transitions. Word has length 39 [2021-07-13 21:00:32,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:32,813 INFO L482 AbstractCegarLoop]: Abstraction has 7017 states and 24412 transitions. [2021-07-13 21:00:32,813 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) [2021-07-13 21:00:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 24412 transitions. [2021-07-13 21:00:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:32,824 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:32,824 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:32,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-07-13 21:00:32,824 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -493978930, now seen corresponding path program 214 times [2021-07-13 21:00:32,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:32,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387028413] [2021-07-13 21:00:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:33,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:33,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387028413] [2021-07-13 21:00:33,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387028413] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:33,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:33,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88648894] [2021-07-13 21:00:33,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:33,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:33,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:33,006 INFO L87 Difference]: Start difference. First operand 7017 states and 24412 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) [2021-07-13 21:00:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:34,529 INFO L93 Difference]: Finished difference Result 9188 states and 31855 transitions. [2021-07-13 21:00:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 21:00:34,529 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 [2021-07-13 21:00:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:34,552 INFO L225 Difference]: With dead ends: 9188 [2021-07-13 21:00:34,552 INFO L226 Difference]: Without dead ends: 9097 [2021-07-13 21:00:34,553 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 754.5ms TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 21:00:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9097 states. [2021-07-13 21:00:34,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9097 to 6987. [2021-07-13 21:00:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4836816490123104) internal successors, (24337), 6986 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24337 transitions. [2021-07-13 21:00:34,707 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24337 transitions. Word has length 39 [2021-07-13 21:00:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:34,707 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24337 transitions. [2021-07-13 21:00:34,707 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) [2021-07-13 21:00:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24337 transitions. [2021-07-13 21:00:34,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:34,720 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:34,720 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:34,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-07-13 21:00:34,720 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:34,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1105047138, now seen corresponding path program 215 times [2021-07-13 21:00:34,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:34,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193650164] [2021-07-13 21:00:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:34,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:34,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193650164] [2021-07-13 21:00:34,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193650164] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:34,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:34,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:34,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607269316] [2021-07-13 21:00:34,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:34,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:34,943 INFO L87 Difference]: Start difference. First operand 6987 states and 24337 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) [2021-07-13 21:00:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:36,811 INFO L93 Difference]: Finished difference Result 9481 states and 32641 transitions. [2021-07-13 21:00:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-13 21:00:36,811 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 [2021-07-13 21:00:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:36,830 INFO L225 Difference]: With dead ends: 9481 [2021-07-13 21:00:36,831 INFO L226 Difference]: Without dead ends: 9426 [2021-07-13 21:00:36,831 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1084.0ms TimeCoverageRelationStatistics Valid=345, Invalid=3315, Unknown=0, NotChecked=0, Total=3660 [2021-07-13 21:00:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2021-07-13 21:00:36,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 6998. [2021-07-13 21:00:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6998 states, 6997 states have (on average 3.4833500071459196) internal successors, (24373), 6997 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 24373 transitions. [2021-07-13 21:00:36,960 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 24373 transitions. Word has length 39 [2021-07-13 21:00:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:36,960 INFO L482 AbstractCegarLoop]: Abstraction has 6998 states and 24373 transitions. [2021-07-13 21:00:36,960 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) [2021-07-13 21:00:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 24373 transitions. [2021-07-13 21:00:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:36,971 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:36,971 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:36,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-07-13 21:00:36,971 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash 67605084, now seen corresponding path program 216 times [2021-07-13 21:00:36,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:36,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297320811] [2021-07-13 21:00:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:37,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:37,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297320811] [2021-07-13 21:00:37,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297320811] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:37,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:37,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:37,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779449778] [2021-07-13 21:00:37,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:37,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:37,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:37,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:37,156 INFO L87 Difference]: Start difference. First operand 6998 states and 24373 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) [2021-07-13 21:00:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:39,344 INFO L93 Difference]: Finished difference Result 10730 states and 36770 transitions. [2021-07-13 21:00:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 21:00:39,344 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 [2021-07-13 21:00:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:39,365 INFO L225 Difference]: With dead ends: 10730 [2021-07-13 21:00:39,365 INFO L226 Difference]: Without dead ends: 10607 [2021-07-13 21:00:39,366 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1246.6ms TimeCoverageRelationStatistics Valid=390, Invalid=4032, Unknown=0, NotChecked=0, Total=4422 [2021-07-13 21:00:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2021-07-13 21:00:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 7002. [2021-07-13 21:00:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.4836451935437793) internal successors, (24389), 7001 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24389 transitions. [2021-07-13 21:00:39,501 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24389 transitions. Word has length 39 [2021-07-13 21:00:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:39,501 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24389 transitions. [2021-07-13 21:00:39,501 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) [2021-07-13 21:00:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24389 transitions. [2021-07-13 21:00:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:39,512 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:39,512 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:39,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-07-13 21:00:39,512 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1809798518, now seen corresponding path program 217 times [2021-07-13 21:00:39,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:39,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486558362] [2021-07-13 21:00:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:39,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:39,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486558362] [2021-07-13 21:00:39,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486558362] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:39,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:39,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:39,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647112309] [2021-07-13 21:00:39,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:39,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:39,695 INFO L87 Difference]: Start difference. First operand 7002 states and 24389 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) [2021-07-13 21:00:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:41,510 INFO L93 Difference]: Finished difference Result 9406 states and 32467 transitions. [2021-07-13 21:00:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 21:00:41,510 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 [2021-07-13 21:00:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:41,533 INFO L225 Difference]: With dead ends: 9406 [2021-07-13 21:00:41,533 INFO L226 Difference]: Without dead ends: 9315 [2021-07-13 21:00:41,533 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1004.2ms TimeCoverageRelationStatistics Valid=318, Invalid=3104, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 21:00:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9315 states. [2021-07-13 21:00:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9315 to 7008. [2021-07-13 21:00:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 3.4819466248037676) internal successors, (24398), 7007 states have internal predecessors, (24398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 24398 transitions. [2021-07-13 21:00:41,672 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 24398 transitions. Word has length 39 [2021-07-13 21:00:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:41,672 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 24398 transitions. [2021-07-13 21:00:41,673 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) [2021-07-13 21:00:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 24398 transitions. [2021-07-13 21:00:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:41,684 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:41,684 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:41,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-07-13 21:00:41,684 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:41,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:41,684 INFO L82 PathProgramCache]: Analyzing trace with hash 982686572, now seen corresponding path program 218 times [2021-07-13 21:00:41,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:41,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334241415] [2021-07-13 21:00:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:41,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:41,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334241415] [2021-07-13 21:00:41,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334241415] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:41,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:41,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:41,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073486607] [2021-07-13 21:00:41,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:41,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:41,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:41,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:41,886 INFO L87 Difference]: Start difference. First operand 7008 states and 24398 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) [2021-07-13 21:00:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:44,012 INFO L93 Difference]: Finished difference Result 10679 states and 36750 transitions. [2021-07-13 21:00:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-13 21:00:44,013 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 [2021-07-13 21:00:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:44,034 INFO L225 Difference]: With dead ends: 10679 [2021-07-13 21:00:44,034 INFO L226 Difference]: Without dead ends: 10579 [2021-07-13 21:00:44,035 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1158.2ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-07-13 21:00:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2021-07-13 21:00:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 7002. [2021-07-13 21:00:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.4817883159548635) internal successors, (24376), 7001 states have internal predecessors, (24376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24376 transitions. [2021-07-13 21:00:44,170 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24376 transitions. Word has length 39 [2021-07-13 21:00:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:44,170 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24376 transitions. [2021-07-13 21:00:44,170 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) [2021-07-13 21:00:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24376 transitions. [2021-07-13 21:00:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:44,180 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:44,180 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:44,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-07-13 21:00:44,180 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:44,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2137409984, now seen corresponding path program 219 times [2021-07-13 21:00:44,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:44,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393689402] [2021-07-13 21:00:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:44,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:44,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393689402] [2021-07-13 21:00:44,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393689402] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:44,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:44,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:44,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670411115] [2021-07-13 21:00:44,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:44,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:44,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:44,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:44,362 INFO L87 Difference]: Start difference. First operand 7002 states and 24376 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) [2021-07-13 21:00:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:46,366 INFO L93 Difference]: Finished difference Result 9391 states and 32328 transitions. [2021-07-13 21:00:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-13 21:00:46,367 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 [2021-07-13 21:00:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:46,385 INFO L225 Difference]: With dead ends: 9391 [2021-07-13 21:00:46,385 INFO L226 Difference]: Without dead ends: 9336 [2021-07-13 21:00:46,386 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 1186.8ms TimeCoverageRelationStatistics Valid=367, Invalid=3665, Unknown=0, NotChecked=0, Total=4032 [2021-07-13 21:00:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2021-07-13 21:00:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 7007. [2021-07-13 21:00:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 3.4810162717670567) internal successors, (24388), 7006 states have internal predecessors, (24388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 24388 transitions. [2021-07-13 21:00:46,508 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 24388 transitions. Word has length 39 [2021-07-13 21:00:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:46,508 INFO L482 AbstractCegarLoop]: Abstraction has 7007 states and 24388 transitions. [2021-07-13 21:00:46,508 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) [2021-07-13 21:00:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 24388 transitions. [2021-07-13 21:00:46,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:46,519 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:46,519 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:46,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-07-13 21:00:46,519 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:46,519 INFO L82 PathProgramCache]: Analyzing trace with hash -964757762, now seen corresponding path program 220 times [2021-07-13 21:00:46,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:46,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046325158] [2021-07-13 21:00:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:46,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:46,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046325158] [2021-07-13 21:00:46,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046325158] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:46,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:46,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:46,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126144953] [2021-07-13 21:00:46,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:46,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:46,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:46,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:46,702 INFO L87 Difference]: Start difference. First operand 7007 states and 24388 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) [2021-07-13 21:00:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:48,934 INFO L93 Difference]: Finished difference Result 10532 states and 36209 transitions. [2021-07-13 21:00:48,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 21:00:48,935 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 [2021-07-13 21:00:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:48,956 INFO L225 Difference]: With dead ends: 10532 [2021-07-13 21:00:48,956 INFO L226 Difference]: Without dead ends: 10472 [2021-07-13 21:00:48,957 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 1253.3ms TimeCoverageRelationStatistics Valid=392, Invalid=4030, Unknown=0, NotChecked=0, Total=4422 [2021-07-13 21:00:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-07-13 21:00:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 7007. [2021-07-13 21:00:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 3.4811590065658007) internal successors, (24389), 7006 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 24389 transitions. [2021-07-13 21:00:49,088 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 24389 transitions. Word has length 39 [2021-07-13 21:00:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:49,088 INFO L482 AbstractCegarLoop]: Abstraction has 7007 states and 24389 transitions. [2021-07-13 21:00:49,088 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) [2021-07-13 21:00:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 24389 transitions. [2021-07-13 21:00:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:49,098 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:49,098 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:49,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-07-13 21:00:49,098 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:49,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1032502642, now seen corresponding path program 221 times [2021-07-13 21:00:49,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:49,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354520694] [2021-07-13 21:00:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:49,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:49,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354520694] [2021-07-13 21:00:49,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354520694] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:49,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:49,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:49,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614094557] [2021-07-13 21:00:49,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:49,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:49,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:49,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:49,279 INFO L87 Difference]: Start difference. First operand 7007 states and 24389 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) [2021-07-13 21:00:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:51,108 INFO L93 Difference]: Finished difference Result 9320 states and 32148 transitions. [2021-07-13 21:00:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 21:00:51,109 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 [2021-07-13 21:00:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:51,128 INFO L225 Difference]: With dead ends: 9320 [2021-07-13 21:00:51,129 INFO L226 Difference]: Without dead ends: 9277 [2021-07-13 21:00:51,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 1029.8ms TimeCoverageRelationStatistics Valid=311, Invalid=3111, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 21:00:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2021-07-13 21:00:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 7016. [2021-07-13 21:00:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 3.479686386315039) internal successors, (24410), 7015 states have internal predecessors, (24410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 24410 transitions. [2021-07-13 21:00:51,260 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 24410 transitions. Word has length 39 [2021-07-13 21:00:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:51,261 INFO L482 AbstractCegarLoop]: Abstraction has 7016 states and 24410 transitions. [2021-07-13 21:00:51,261 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) [2021-07-13 21:00:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 24410 transitions. [2021-07-13 21:00:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:51,272 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:51,272 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:51,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-07-13 21:00:51,272 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:51,273 INFO L82 PathProgramCache]: Analyzing trace with hash 717604494, now seen corresponding path program 222 times [2021-07-13 21:00:51,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:51,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720408400] [2021-07-13 21:00:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:51,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:51,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720408400] [2021-07-13 21:00:51,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720408400] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:51,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:51,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:51,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886699295] [2021-07-13 21:00:51,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:51,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:51,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:51,453 INFO L87 Difference]: Start difference. First operand 7016 states and 24410 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) [2021-07-13 21:00:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:53,119 INFO L93 Difference]: Finished difference Result 9308 states and 32114 transitions. [2021-07-13 21:00:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 21:00:53,119 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 [2021-07-13 21:00:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:53,137 INFO L225 Difference]: With dead ends: 9308 [2021-07-13 21:00:53,138 INFO L226 Difference]: Without dead ends: 9257 [2021-07-13 21:00:53,138 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 886.7ms TimeCoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 21:00:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9257 states. [2021-07-13 21:00:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9257 to 7016. [2021-07-13 21:00:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 3.4792587312900927) internal successors, (24407), 7015 states have internal predecessors, (24407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 24407 transitions. [2021-07-13 21:00:53,258 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 24407 transitions. Word has length 39 [2021-07-13 21:00:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:53,259 INFO L482 AbstractCegarLoop]: Abstraction has 7016 states and 24407 transitions. [2021-07-13 21:00:53,259 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) [2021-07-13 21:00:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 24407 transitions. [2021-07-13 21:00:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:53,269 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:53,269 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:53,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-07-13 21:00:53,269 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:53,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1334822896, now seen corresponding path program 223 times [2021-07-13 21:00:53,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:53,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651929080] [2021-07-13 21:00:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:53,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:53,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651929080] [2021-07-13 21:00:53,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651929080] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:53,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:53,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:53,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191980324] [2021-07-13 21:00:53,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:53,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:53,452 INFO L87 Difference]: Start difference. First operand 7016 states and 24407 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) [2021-07-13 21:00:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:55,605 INFO L93 Difference]: Finished difference Result 10505 states and 36124 transitions. [2021-07-13 21:00:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-13 21:00:55,606 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 [2021-07-13 21:00:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:55,626 INFO L225 Difference]: With dead ends: 10505 [2021-07-13 21:00:55,627 INFO L226 Difference]: Without dead ends: 10459 [2021-07-13 21:00:55,627 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 1174.6ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-07-13 21:00:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2021-07-13 21:00:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 7023. [2021-07-13 21:00:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7023 states, 7022 states have (on average 3.4779265166619195) internal successors, (24422), 7022 states have internal predecessors, (24422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 24422 transitions. [2021-07-13 21:00:55,757 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 24422 transitions. Word has length 39 [2021-07-13 21:00:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:55,757 INFO L482 AbstractCegarLoop]: Abstraction has 7023 states and 24422 transitions. [2021-07-13 21:00:55,757 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) [2021-07-13 21:00:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 24422 transitions. [2021-07-13 21:00:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:55,767 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:55,767 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:55,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-07-13 21:00:55,768 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:55,768 INFO L82 PathProgramCache]: Analyzing trace with hash -100244594, now seen corresponding path program 224 times [2021-07-13 21:00:55,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:55,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434587173] [2021-07-13 21:00:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:55,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:55,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434587173] [2021-07-13 21:00:55,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434587173] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:55,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:55,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:55,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100476275] [2021-07-13 21:00:55,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:55,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:55,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:55,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:55,950 INFO L87 Difference]: Start difference. First operand 7023 states and 24422 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) [2021-07-13 21:00:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:57,612 INFO L93 Difference]: Finished difference Result 9294 states and 32067 transitions. [2021-07-13 21:00:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 21:00:57,612 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 [2021-07-13 21:00:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:57,631 INFO L225 Difference]: With dead ends: 9294 [2021-07-13 21:00:57,631 INFO L226 Difference]: Without dead ends: 9239 [2021-07-13 21:00:57,631 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 918.2ms TimeCoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 21:00:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2021-07-13 21:00:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7020. [2021-07-13 21:00:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 7019 states have (on average 3.4785581991736714) internal successors, (24416), 7019 states have internal predecessors, (24416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 24416 transitions. [2021-07-13 21:00:57,752 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 24416 transitions. Word has length 39 [2021-07-13 21:00:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:57,752 INFO L482 AbstractCegarLoop]: Abstraction has 7020 states and 24416 transitions. [2021-07-13 21:00:57,752 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) [2021-07-13 21:00:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 24416 transitions. [2021-07-13 21:00:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:57,763 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:57,763 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:57,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-07-13 21:00:57,763 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:57,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1382947712, now seen corresponding path program 225 times [2021-07-13 21:00:57,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:57,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102993141] [2021-07-13 21:00:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:00:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:00:57,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:00:57,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102993141] [2021-07-13 21:00:57,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102993141] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:00:57,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:00:57,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:00:57,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811511567] [2021-07-13 21:00:57,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:00:57,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:00:57,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:00:57,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:00:57,946 INFO L87 Difference]: Start difference. First operand 7020 states and 24416 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) [2021-07-13 21:00:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:00:59,661 INFO L93 Difference]: Finished difference Result 9347 states and 32183 transitions. [2021-07-13 21:00:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-13 21:00:59,661 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 [2021-07-13 21:00:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:00:59,681 INFO L225 Difference]: With dead ends: 9347 [2021-07-13 21:00:59,681 INFO L226 Difference]: Without dead ends: 9290 [2021-07-13 21:00:59,681 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 958.0ms TimeCoverageRelationStatistics Valid=299, Invalid=2893, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 21:00:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2021-07-13 21:00:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 7020. [2021-07-13 21:00:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 7019 states have (on average 3.4784157287362873) internal successors, (24415), 7019 states have internal predecessors, (24415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:00:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 24415 transitions. [2021-07-13 21:00:59,804 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 24415 transitions. Word has length 39 [2021-07-13 21:00:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:00:59,804 INFO L482 AbstractCegarLoop]: Abstraction has 7020 states and 24415 transitions. [2021-07-13 21:00:59,804 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) [2021-07-13 21:00:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 24415 transitions. [2021-07-13 21:00:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:00:59,815 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:00:59,815 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:00:59,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-07-13 21:00:59,815 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:00:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:00:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1194541404, now seen corresponding path program 226 times [2021-07-13 21:00:59,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:00:59,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907669799] [2021-07-13 21:00:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:00:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:00,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:00,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907669799] [2021-07-13 21:01:00,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907669799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:00,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:00,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:00,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567448540] [2021-07-13 21:01:00,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:00,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:00,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:00,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:00,006 INFO L87 Difference]: Start difference. First operand 7020 states and 24415 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) [2021-07-13 21:01:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:01,824 INFO L93 Difference]: Finished difference Result 9598 states and 33031 transitions. [2021-07-13 21:01:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 21:01:01,824 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 [2021-07-13 21:01:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:01,848 INFO L225 Difference]: With dead ends: 9598 [2021-07-13 21:01:01,848 INFO L226 Difference]: Without dead ends: 9539 [2021-07-13 21:01:01,848 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 986.8ms TimeCoverageRelationStatistics Valid=316, Invalid=3106, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 21:01:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2021-07-13 21:01:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 7019. [2021-07-13 21:01:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.4786263892846967) internal successors, (24413), 7018 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24413 transitions. [2021-07-13 21:01:01,979 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24413 transitions. Word has length 39 [2021-07-13 21:01:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:01,979 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24413 transitions. [2021-07-13 21:01:01,979 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) [2021-07-13 21:01:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24413 transitions. [2021-07-13 21:01:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:01,990 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:01,990 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:01,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-07-13 21:01:01,990 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash -44191124, now seen corresponding path program 227 times [2021-07-13 21:01:01,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:01,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662572165] [2021-07-13 21:01:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:02,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:02,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662572165] [2021-07-13 21:01:02,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662572165] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:02,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:02,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:02,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188963967] [2021-07-13 21:01:02,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:02,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:02,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:02,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:02,173 INFO L87 Difference]: Start difference. First operand 7019 states and 24413 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) [2021-07-13 21:01:03,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:03,879 INFO L93 Difference]: Finished difference Result 9294 states and 32083 transitions. [2021-07-13 21:01:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 21:01:03,880 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 [2021-07-13 21:01:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:03,898 INFO L225 Difference]: With dead ends: 9294 [2021-07-13 21:01:03,898 INFO L226 Difference]: Without dead ends: 9219 [2021-07-13 21:01:03,899 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 906.9ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 21:01:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9219 states. [2021-07-13 21:01:03,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9219 to 7005. [2021-07-13 21:01:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7005 states, 7004 states have (on average 3.48043974871502) internal successors, (24377), 7004 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 24377 transitions. [2021-07-13 21:01:04,021 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 24377 transitions. Word has length 39 [2021-07-13 21:01:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:04,021 INFO L482 AbstractCegarLoop]: Abstraction has 7005 states and 24377 transitions. [2021-07-13 21:01:04,021 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) [2021-07-13 21:01:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 24377 transitions. [2021-07-13 21:01:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:04,032 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:04,032 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:04,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-07-13 21:01:04,033 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:04,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:04,033 INFO L82 PathProgramCache]: Analyzing trace with hash 119555692, now seen corresponding path program 228 times [2021-07-13 21:01:04,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:04,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552149804] [2021-07-13 21:01:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:04,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:04,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552149804] [2021-07-13 21:01:04,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552149804] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:04,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:04,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:04,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112785120] [2021-07-13 21:01:04,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:04,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:04,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:04,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:04,215 INFO L87 Difference]: Start difference. First operand 7005 states and 24377 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) [2021-07-13 21:01:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:06,201 INFO L93 Difference]: Finished difference Result 9664 states and 33390 transitions. [2021-07-13 21:01:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 21:01:06,201 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 [2021-07-13 21:01:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:06,222 INFO L225 Difference]: With dead ends: 9664 [2021-07-13 21:01:06,222 INFO L226 Difference]: Without dead ends: 9569 [2021-07-13 21:01:06,223 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1058.4ms TimeCoverageRelationStatistics Valid=327, Invalid=3333, Unknown=0, NotChecked=0, Total=3660 [2021-07-13 21:01:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9569 states. [2021-07-13 21:01:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9569 to 6979. [2021-07-13 21:01:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6978 states have (on average 3.483519633132703) internal successors, (24308), 6978 states have internal predecessors, (24308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 24308 transitions. [2021-07-13 21:01:06,349 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 24308 transitions. Word has length 39 [2021-07-13 21:01:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:06,349 INFO L482 AbstractCegarLoop]: Abstraction has 6979 states and 24308 transitions. [2021-07-13 21:01:06,349 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) [2021-07-13 21:01:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 24308 transitions. [2021-07-13 21:01:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:06,359 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:06,359 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:06,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-07-13 21:01:06,360 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2048360754, now seen corresponding path program 229 times [2021-07-13 21:01:06,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:06,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982821052] [2021-07-13 21:01:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:06,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:06,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982821052] [2021-07-13 21:01:06,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982821052] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:06,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:06,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:06,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967262509] [2021-07-13 21:01:06,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:06,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:06,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:06,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:06,541 INFO L87 Difference]: Start difference. First operand 6979 states and 24308 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) [2021-07-13 21:01:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:10,680 INFO L93 Difference]: Finished difference Result 12981 states and 44182 transitions. [2021-07-13 21:01:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-07-13 21:01:10,680 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 [2021-07-13 21:01:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:10,706 INFO L225 Difference]: With dead ends: 12981 [2021-07-13 21:01:10,706 INFO L226 Difference]: Without dead ends: 12875 [2021-07-13 21:01:10,707 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 2258.0ms TimeCoverageRelationStatistics Valid=739, Invalid=9973, Unknown=0, NotChecked=0, Total=10712 [2021-07-13 21:01:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12875 states. [2021-07-13 21:01:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12875 to 7021. [2021-07-13 21:01:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7020 states have (on average 3.4853276353276352) internal successors, (24467), 7020 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 24467 transitions. [2021-07-13 21:01:10,853 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 24467 transitions. Word has length 39 [2021-07-13 21:01:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:10,853 INFO L482 AbstractCegarLoop]: Abstraction has 7021 states and 24467 transitions. [2021-07-13 21:01:10,853 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) [2021-07-13 21:01:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 24467 transitions. [2021-07-13 21:01:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:10,863 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:10,863 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:10,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-07-13 21:01:10,863 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:10,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:10,863 INFO L82 PathProgramCache]: Analyzing trace with hash 751715642, now seen corresponding path program 230 times [2021-07-13 21:01:10,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:10,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150396235] [2021-07-13 21:01:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:11,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:11,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150396235] [2021-07-13 21:01:11,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150396235] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:11,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:11,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:11,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318462132] [2021-07-13 21:01:11,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:11,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:11,045 INFO L87 Difference]: Start difference. First operand 7021 states and 24467 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) [2021-07-13 21:01:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:13,353 INFO L93 Difference]: Finished difference Result 10377 states and 35684 transitions. [2021-07-13 21:01:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-07-13 21:01:13,353 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 [2021-07-13 21:01:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:13,374 INFO L225 Difference]: With dead ends: 10377 [2021-07-13 21:01:13,374 INFO L226 Difference]: Without dead ends: 10313 [2021-07-13 21:01:13,374 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 1363.4ms TimeCoverageRelationStatistics Valid=422, Invalid=4980, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 21:01:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10313 states. [2021-07-13 21:01:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10313 to 7039. [2021-07-13 21:01:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 3.4857914180164817) internal successors, (24533), 7038 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 24533 transitions. [2021-07-13 21:01:13,512 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 24533 transitions. Word has length 39 [2021-07-13 21:01:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:13,512 INFO L482 AbstractCegarLoop]: Abstraction has 7039 states and 24533 transitions. [2021-07-13 21:01:13,512 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) [2021-07-13 21:01:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 24533 transitions. [2021-07-13 21:01:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:13,523 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:13,523 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:13,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-07-13 21:01:13,523 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:13,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1670199212, now seen corresponding path program 231 times [2021-07-13 21:01:13,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:13,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017298871] [2021-07-13 21:01:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:13,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:13,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017298871] [2021-07-13 21:01:13,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017298871] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:13,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:13,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:13,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65598948] [2021-07-13 21:01:13,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:13,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:13,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:13,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:13,721 INFO L87 Difference]: Start difference. First operand 7039 states and 24533 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) [2021-07-13 21:01:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:15,215 INFO L93 Difference]: Finished difference Result 9481 states and 32651 transitions. [2021-07-13 21:01:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 21:01:15,216 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 [2021-07-13 21:01:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:15,234 INFO L225 Difference]: With dead ends: 9481 [2021-07-13 21:01:15,234 INFO L226 Difference]: Without dead ends: 9438 [2021-07-13 21:01:15,234 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 789.8ms TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 21:01:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-07-13 21:01:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 7067. [2021-07-13 21:01:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7067 states, 7066 states have (on average 3.484574016416643) internal successors, (24622), 7066 states have internal predecessors, (24622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 24622 transitions. [2021-07-13 21:01:15,356 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 24622 transitions. Word has length 39 [2021-07-13 21:01:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:15,356 INFO L482 AbstractCegarLoop]: Abstraction has 7067 states and 24622 transitions. [2021-07-13 21:01:15,356 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) [2021-07-13 21:01:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 24622 transitions. [2021-07-13 21:01:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:15,367 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:15,367 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:15,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-07-13 21:01:15,367 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:15,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1690347946, now seen corresponding path program 232 times [2021-07-13 21:01:15,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:15,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543734567] [2021-07-13 21:01:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:15,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:15,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543734567] [2021-07-13 21:01:15,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543734567] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:15,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:15,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:15,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659654545] [2021-07-13 21:01:15,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:15,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:15,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:15,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:15,587 INFO L87 Difference]: Start difference. First operand 7067 states and 24622 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) [2021-07-13 21:01:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:17,255 INFO L93 Difference]: Finished difference Result 9597 states and 33004 transitions. [2021-07-13 21:01:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 21:01:17,255 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 [2021-07-13 21:01:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:17,273 INFO L225 Difference]: With dead ends: 9597 [2021-07-13 21:01:17,274 INFO L226 Difference]: Without dead ends: 9554 [2021-07-13 21:01:17,274 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 931.6ms TimeCoverageRelationStatistics Valid=262, Invalid=2600, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 21:01:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2021-07-13 21:01:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 7063. [2021-07-13 21:01:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7062 states have (on average 3.485131690739167) internal successors, (24612), 7062 states have internal predecessors, (24612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 24612 transitions. [2021-07-13 21:01:17,394 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 24612 transitions. Word has length 39 [2021-07-13 21:01:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:17,394 INFO L482 AbstractCegarLoop]: Abstraction has 7063 states and 24612 transitions. [2021-07-13 21:01:17,394 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) [2021-07-13 21:01:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 24612 transitions. [2021-07-13 21:01:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:17,404 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:17,404 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:17,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-07-13 21:01:17,405 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1452115862, now seen corresponding path program 233 times [2021-07-13 21:01:17,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:17,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733617364] [2021-07-13 21:01:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:17,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:17,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733617364] [2021-07-13 21:01:17,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733617364] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:17,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:17,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:17,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350169843] [2021-07-13 21:01:17,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:17,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:17,587 INFO L87 Difference]: Start difference. First operand 7063 states and 24612 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) [2021-07-13 21:01:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:19,608 INFO L93 Difference]: Finished difference Result 10704 states and 36777 transitions. [2021-07-13 21:01:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 21:01:19,608 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 [2021-07-13 21:01:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:19,629 INFO L225 Difference]: With dead ends: 10704 [2021-07-13 21:01:19,629 INFO L226 Difference]: Without dead ends: 10644 [2021-07-13 21:01:19,630 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1065.2ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-07-13 21:01:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10644 states. [2021-07-13 21:01:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10644 to 7057. [2021-07-13 21:01:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 7056 states have (on average 3.48625283446712) internal successors, (24599), 7056 states have internal predecessors, (24599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 24599 transitions. [2021-07-13 21:01:19,763 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 24599 transitions. Word has length 39 [2021-07-13 21:01:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:19,763 INFO L482 AbstractCegarLoop]: Abstraction has 7057 states and 24599 transitions. [2021-07-13 21:01:19,763 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) [2021-07-13 21:01:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 24599 transitions. [2021-07-13 21:01:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:19,773 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:19,773 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:19,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-07-13 21:01:19,774 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:19,774 INFO L82 PathProgramCache]: Analyzing trace with hash 763284892, now seen corresponding path program 234 times [2021-07-13 21:01:19,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:19,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546826655] [2021-07-13 21:01:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:19,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:19,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546826655] [2021-07-13 21:01:19,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546826655] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:19,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:19,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 21:01:19,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137033571] [2021-07-13 21:01:19,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 21:01:19,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 21:01:19,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 21:01:19,941 INFO L87 Difference]: Start difference. First operand 7057 states and 24599 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) [2021-07-13 21:01:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:21,716 INFO L93 Difference]: Finished difference Result 10680 states and 36737 transitions. [2021-07-13 21:01:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 21:01:21,716 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 [2021-07-13 21:01:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:21,736 INFO L225 Difference]: With dead ends: 10680 [2021-07-13 21:01:21,736 INFO L226 Difference]: Without dead ends: 10604 [2021-07-13 21:01:21,737 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 911.0ms TimeCoverageRelationStatistics Valid=270, Invalid=2700, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 21:01:21,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10604 states. [2021-07-13 21:01:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10604 to 7069. [2021-07-13 21:01:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7068 states have (on average 3.4837294850028298) internal successors, (24623), 7068 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 24623 transitions. [2021-07-13 21:01:21,867 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 24623 transitions. Word has length 39 [2021-07-13 21:01:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:21,867 INFO L482 AbstractCegarLoop]: Abstraction has 7069 states and 24623 transitions. [2021-07-13 21:01:21,867 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) [2021-07-13 21:01:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 24623 transitions. [2021-07-13 21:01:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:21,877 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:21,877 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:21,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-07-13 21:01:21,877 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash -254768720, now seen corresponding path program 235 times [2021-07-13 21:01:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:21,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960120513] [2021-07-13 21:01:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:22,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:22,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960120513] [2021-07-13 21:01:22,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960120513] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:22,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:22,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:22,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756158170] [2021-07-13 21:01:22,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:22,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:22,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:22,063 INFO L87 Difference]: Start difference. First operand 7069 states and 24623 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) [2021-07-13 21:01:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:23,984 INFO L93 Difference]: Finished difference Result 10662 states and 36683 transitions. [2021-07-13 21:01:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 21:01:23,985 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 [2021-07-13 21:01:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:24,006 INFO L225 Difference]: With dead ends: 10662 [2021-07-13 21:01:24,006 INFO L226 Difference]: Without dead ends: 10592 [2021-07-13 21:01:24,007 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 980.3ms TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 21:01:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2021-07-13 21:01:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 7057. [2021-07-13 21:01:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 7056 states have (on average 3.485685941043084) internal successors, (24595), 7056 states have internal predecessors, (24595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 24595 transitions. [2021-07-13 21:01:24,151 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 24595 transitions. Word has length 39 [2021-07-13 21:01:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:24,151 INFO L482 AbstractCegarLoop]: Abstraction has 7057 states and 24595 transitions. [2021-07-13 21:01:24,151 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) [2021-07-13 21:01:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 24595 transitions. [2021-07-13 21:01:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:24,161 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:24,161 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:24,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-07-13 21:01:24,161 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:24,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:24,161 INFO L82 PathProgramCache]: Analyzing trace with hash 591414960, now seen corresponding path program 236 times [2021-07-13 21:01:24,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:24,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846504984] [2021-07-13 21:01:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:24,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:24,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846504984] [2021-07-13 21:01:24,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846504984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:24,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:24,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:24,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046749391] [2021-07-13 21:01:24,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:24,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:24,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:24,343 INFO L87 Difference]: Start difference. First operand 7057 states and 24595 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) [2021-07-13 21:01:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:26,705 INFO L93 Difference]: Finished difference Result 10427 states and 35961 transitions. [2021-07-13 21:01:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-13 21:01:26,706 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 [2021-07-13 21:01:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:26,726 INFO L225 Difference]: With dead ends: 10427 [2021-07-13 21:01:26,726 INFO L226 Difference]: Without dead ends: 10321 [2021-07-13 21:01:26,727 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 1377.7ms TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2021-07-13 21:01:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10321 states. [2021-07-13 21:01:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10321 to 7084. [2021-07-13 21:01:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 7083 states have (on average 3.4859522801072993) internal successors, (24691), 7083 states have internal predecessors, (24691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 24691 transitions. [2021-07-13 21:01:26,856 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 24691 transitions. Word has length 39 [2021-07-13 21:01:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:26,856 INFO L482 AbstractCegarLoop]: Abstraction has 7084 states and 24691 transitions. [2021-07-13 21:01:26,856 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) [2021-07-13 21:01:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 24691 transitions. [2021-07-13 21:01:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:26,866 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:26,866 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:26,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-07-13 21:01:26,866 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:26,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1189183342, now seen corresponding path program 237 times [2021-07-13 21:01:26,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:26,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608521518] [2021-07-13 21:01:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:27,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:27,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608521518] [2021-07-13 21:01:27,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608521518] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:27,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:27,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:27,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780560732] [2021-07-13 21:01:27,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:27,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:27,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:27,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:27,048 INFO L87 Difference]: Start difference. First operand 7084 states and 24691 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) [2021-07-13 21:01:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:29,779 INFO L93 Difference]: Finished difference Result 11618 states and 40022 transitions. [2021-07-13 21:01:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 21:01:29,779 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 [2021-07-13 21:01:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:29,803 INFO L225 Difference]: With dead ends: 11618 [2021-07-13 21:01:29,803 INFO L226 Difference]: Without dead ends: 11566 [2021-07-13 21:01:29,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 1567.6ms TimeCoverageRelationStatistics Valid=509, Invalid=6297, Unknown=0, NotChecked=0, Total=6806 [2021-07-13 21:01:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11566 states. [2021-07-13 21:01:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11566 to 7018. [2021-07-13 21:01:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7018 states, 7017 states have (on average 3.4855351289724954) internal successors, (24458), 7017 states have internal predecessors, (24458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 24458 transitions. [2021-07-13 21:01:29,945 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 24458 transitions. Word has length 39 [2021-07-13 21:01:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:29,945 INFO L482 AbstractCegarLoop]: Abstraction has 7018 states and 24458 transitions. [2021-07-13 21:01:29,946 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) [2021-07-13 21:01:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 24458 transitions. [2021-07-13 21:01:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:29,956 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:29,956 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:29,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-07-13 21:01:29,956 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:29,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1509898530, now seen corresponding path program 238 times [2021-07-13 21:01:29,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:29,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098320185] [2021-07-13 21:01:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:30,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:30,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098320185] [2021-07-13 21:01:30,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098320185] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:30,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:30,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:30,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957894070] [2021-07-13 21:01:30,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:30,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:30,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:30,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:30,179 INFO L87 Difference]: Start difference. First operand 7018 states and 24458 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) [2021-07-13 21:01:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:31,668 INFO L93 Difference]: Finished difference Result 9466 states and 32661 transitions. [2021-07-13 21:01:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 21:01:31,668 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 [2021-07-13 21:01:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:31,687 INFO L225 Difference]: With dead ends: 9466 [2021-07-13 21:01:31,687 INFO L226 Difference]: Without dead ends: 9411 [2021-07-13 21:01:31,688 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 818.4ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 21:01:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9411 states. [2021-07-13 21:01:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9411 to 7026. [2021-07-13 21:01:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7025 states have (on average 3.484982206405694) internal successors, (24482), 7025 states have internal predecessors, (24482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 24482 transitions. [2021-07-13 21:01:31,809 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 24482 transitions. Word has length 39 [2021-07-13 21:01:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:31,809 INFO L482 AbstractCegarLoop]: Abstraction has 7026 states and 24482 transitions. [2021-07-13 21:01:31,809 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) [2021-07-13 21:01:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 24482 transitions. [2021-07-13 21:01:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:31,820 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:31,820 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:31,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-07-13 21:01:31,820 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:31,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1612416544, now seen corresponding path program 239 times [2021-07-13 21:01:31,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:31,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550246220] [2021-07-13 21:01:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:32,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:32,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550246220] [2021-07-13 21:01:32,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550246220] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:32,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:32,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363654629] [2021-07-13 21:01:32,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:32,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:32,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:32,011 INFO L87 Difference]: Start difference. First operand 7026 states and 24482 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) [2021-07-13 21:01:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:34,031 INFO L93 Difference]: Finished difference Result 10690 states and 36761 transitions. [2021-07-13 21:01:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-13 21:01:34,031 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 [2021-07-13 21:01:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:34,052 INFO L225 Difference]: With dead ends: 10690 [2021-07-13 21:01:34,053 INFO L226 Difference]: Without dead ends: 10630 [2021-07-13 21:01:34,053 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1069.5ms TimeCoverageRelationStatistics Valid=336, Invalid=3446, Unknown=0, NotChecked=0, Total=3782 [2021-07-13 21:01:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2021-07-13 21:01:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 7024. [2021-07-13 21:01:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7024 states, 7023 states have (on average 3.48526270824434) internal successors, (24477), 7023 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7024 states to 7024 states and 24477 transitions. [2021-07-13 21:01:34,184 INFO L78 Accepts]: Start accepts. Automaton has 7024 states and 24477 transitions. Word has length 39 [2021-07-13 21:01:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:34,184 INFO L482 AbstractCegarLoop]: Abstraction has 7024 states and 24477 transitions. [2021-07-13 21:01:34,184 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) [2021-07-13 21:01:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7024 states and 24477 transitions. [2021-07-13 21:01:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:34,195 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:34,195 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:34,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-07-13 21:01:34,195 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:34,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 805147150, now seen corresponding path program 240 times [2021-07-13 21:01:34,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:34,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022039661] [2021-07-13 21:01:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:34,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:34,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022039661] [2021-07-13 21:01:34,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022039661] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:34,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:34,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:34,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063105743] [2021-07-13 21:01:34,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:34,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:34,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:34,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:34,376 INFO L87 Difference]: Start difference. First operand 7024 states and 24477 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) [2021-07-13 21:01:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:35,828 INFO L93 Difference]: Finished difference Result 9387 states and 32487 transitions. [2021-07-13 21:01:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 21:01:35,829 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 [2021-07-13 21:01:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:35,848 INFO L225 Difference]: With dead ends: 9387 [2021-07-13 21:01:35,848 INFO L226 Difference]: Without dead ends: 9296 [2021-07-13 21:01:35,848 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 749.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 21:01:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2021-07-13 21:01:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 7024. [2021-07-13 21:01:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7024 states, 7023 states have (on average 3.484408372490389) internal successors, (24471), 7023 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7024 states to 7024 states and 24471 transitions. [2021-07-13 21:01:35,973 INFO L78 Accepts]: Start accepts. Automaton has 7024 states and 24471 transitions. Word has length 39 [2021-07-13 21:01:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:35,973 INFO L482 AbstractCegarLoop]: Abstraction has 7024 states and 24471 transitions. [2021-07-13 21:01:35,973 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) [2021-07-13 21:01:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7024 states and 24471 transitions. [2021-07-13 21:01:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:35,984 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:35,984 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:35,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-07-13 21:01:35,984 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:35,984 INFO L82 PathProgramCache]: Analyzing trace with hash -697335056, now seen corresponding path program 241 times [2021-07-13 21:01:35,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:35,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908638686] [2021-07-13 21:01:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:36,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:36,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908638686] [2021-07-13 21:01:36,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908638686] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:36,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:36,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:36,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822792778] [2021-07-13 21:01:36,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:36,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:36,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:36,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:36,166 INFO L87 Difference]: Start difference. First operand 7024 states and 24471 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) [2021-07-13 21:01:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:38,288 INFO L93 Difference]: Finished difference Result 10780 states and 37126 transitions. [2021-07-13 21:01:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-13 21:01:38,289 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 [2021-07-13 21:01:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:38,310 INFO L225 Difference]: With dead ends: 10780 [2021-07-13 21:01:38,310 INFO L226 Difference]: Without dead ends: 10680 [2021-07-13 21:01:38,311 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1081.5ms TimeCoverageRelationStatistics Valid=345, Invalid=3561, Unknown=0, NotChecked=0, Total=3906 [2021-07-13 21:01:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2021-07-13 21:01:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 7036. [2021-07-13 21:01:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 7035 states have (on average 3.483866382373845) internal successors, (24509), 7035 states have internal predecessors, (24509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 24509 transitions. [2021-07-13 21:01:38,445 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 24509 transitions. Word has length 39 [2021-07-13 21:01:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:38,446 INFO L482 AbstractCegarLoop]: Abstraction has 7036 states and 24509 transitions. [2021-07-13 21:01:38,446 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) [2021-07-13 21:01:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 24509 transitions. [2021-07-13 21:01:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:38,457 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:38,457 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:38,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-07-13 21:01:38,457 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:38,457 INFO L82 PathProgramCache]: Analyzing trace with hash -933960052, now seen corresponding path program 242 times [2021-07-13 21:01:38,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:38,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090190556] [2021-07-13 21:01:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:38,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:38,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090190556] [2021-07-13 21:01:38,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090190556] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:38,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:38,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 21:01:38,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676938017] [2021-07-13 21:01:38,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 21:01:38,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 21:01:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 21:01:38,626 INFO L87 Difference]: Start difference. First operand 7036 states and 24509 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) [2021-07-13 21:01:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:40,336 INFO L93 Difference]: Finished difference Result 10500 states and 36228 transitions. [2021-07-13 21:01:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 21:01:40,336 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 [2021-07-13 21:01:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:40,357 INFO L225 Difference]: With dead ends: 10500 [2021-07-13 21:01:40,357 INFO L226 Difference]: Without dead ends: 10424 [2021-07-13 21:01:40,358 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 841.7ms TimeCoverageRelationStatistics Valid=246, Invalid=2406, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 21:01:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10424 states. [2021-07-13 21:01:40,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10424 to 7068. [2021-07-13 21:01:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7067 states have (on average 3.4805433705957265) internal successors, (24597), 7067 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 24597 transitions. [2021-07-13 21:01:40,489 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 24597 transitions. Word has length 39 [2021-07-13 21:01:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:40,489 INFO L482 AbstractCegarLoop]: Abstraction has 7068 states and 24597 transitions. [2021-07-13 21:01:40,489 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) [2021-07-13 21:01:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 24597 transitions. [2021-07-13 21:01:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:40,499 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:40,499 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:40,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-07-13 21:01:40,499 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:40,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1952013664, now seen corresponding path program 243 times [2021-07-13 21:01:40,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:40,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324428131] [2021-07-13 21:01:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:40,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:40,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324428131] [2021-07-13 21:01:40,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324428131] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:40,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:40,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:40,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684926663] [2021-07-13 21:01:40,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:40,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:40,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:40,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:40,684 INFO L87 Difference]: Start difference. First operand 7068 states and 24597 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) [2021-07-13 21:01:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:42,507 INFO L93 Difference]: Finished difference Result 10482 states and 36174 transitions. [2021-07-13 21:01:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 21:01:42,508 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 [2021-07-13 21:01:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:42,528 INFO L225 Difference]: With dead ends: 10482 [2021-07-13 21:01:42,528 INFO L226 Difference]: Without dead ends: 10416 [2021-07-13 21:01:42,529 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 918.3ms TimeCoverageRelationStatistics Valid=270, Invalid=2810, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 21:01:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2021-07-13 21:01:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 7060. [2021-07-13 21:01:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7060 states, 7059 states have (on average 3.48108797280068) internal successors, (24573), 7059 states have internal predecessors, (24573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 24573 transitions. [2021-07-13 21:01:42,658 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 24573 transitions. Word has length 39 [2021-07-13 21:01:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:42,658 INFO L482 AbstractCegarLoop]: Abstraction has 7060 states and 24573 transitions. [2021-07-13 21:01:42,658 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) [2021-07-13 21:01:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 24573 transitions. [2021-07-13 21:01:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:42,668 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:42,668 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:42,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-07-13 21:01:42,668 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:42,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2060687978, now seen corresponding path program 244 times [2021-07-13 21:01:42,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:42,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307729821] [2021-07-13 21:01:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:42,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:42,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307729821] [2021-07-13 21:01:42,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307729821] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:42,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:42,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:42,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650238130] [2021-07-13 21:01:42,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:42,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:42,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:42,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:42,849 INFO L87 Difference]: Start difference. First operand 7060 states and 24573 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) [2021-07-13 21:01:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:44,783 INFO L93 Difference]: Finished difference Result 10652 states and 36718 transitions. [2021-07-13 21:01:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 21:01:44,783 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 [2021-07-13 21:01:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:44,804 INFO L225 Difference]: With dead ends: 10652 [2021-07-13 21:01:44,804 INFO L226 Difference]: Without dead ends: 10490 [2021-07-13 21:01:44,805 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 960.9ms TimeCoverageRelationStatistics Valid=295, Invalid=3011, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 21:01:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2021-07-13 21:01:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 6976. [2021-07-13 21:01:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 3.4874551971326166) internal successors, (24325), 6975 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 24325 transitions. [2021-07-13 21:01:44,937 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 24325 transitions. Word has length 39 [2021-07-13 21:01:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:44,937 INFO L482 AbstractCegarLoop]: Abstraction has 6976 states and 24325 transitions. [2021-07-13 21:01:44,937 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) [2021-07-13 21:01:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 24325 transitions. [2021-07-13 21:01:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:44,948 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:44,948 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:44,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-07-13 21:01:44,949 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1186761512, now seen corresponding path program 245 times [2021-07-13 21:01:44,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:44,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738514654] [2021-07-13 21:01:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:45,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:45,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738514654] [2021-07-13 21:01:45,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738514654] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:45,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:45,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:45,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476886201] [2021-07-13 21:01:45,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:45,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:45,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:45,165 INFO L87 Difference]: Start difference. First operand 6976 states and 24325 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) [2021-07-13 21:01:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:47,730 INFO L93 Difference]: Finished difference Result 10481 states and 35926 transitions. [2021-07-13 21:01:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 21:01:47,731 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 [2021-07-13 21:01:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:47,753 INFO L225 Difference]: With dead ends: 10481 [2021-07-13 21:01:47,753 INFO L226 Difference]: Without dead ends: 10417 [2021-07-13 21:01:47,753 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1564.1ms TimeCoverageRelationStatistics Valid=493, Invalid=5827, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 21:01:47,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2021-07-13 21:01:47,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 6979. [2021-07-13 21:01:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6978 states have (on average 3.487675551734021) internal successors, (24337), 6978 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 24337 transitions. [2021-07-13 21:01:47,897 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 24337 transitions. Word has length 39 [2021-07-13 21:01:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:47,897 INFO L482 AbstractCegarLoop]: Abstraction has 6979 states and 24337 transitions. [2021-07-13 21:01:47,897 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) [2021-07-13 21:01:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 24337 transitions. [2021-07-13 21:01:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:47,949 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:47,949 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:47,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-07-13 21:01:47,949 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash -268277942, now seen corresponding path program 246 times [2021-07-13 21:01:47,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:47,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621766798] [2021-07-13 21:01:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:48,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:48,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621766798] [2021-07-13 21:01:48,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621766798] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:48,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:48,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:48,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385729998] [2021-07-13 21:01:48,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:48,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:48,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:48,131 INFO L87 Difference]: Start difference. First operand 6979 states and 24337 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) [2021-07-13 21:01:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:49,735 INFO L93 Difference]: Finished difference Result 9530 states and 32717 transitions. [2021-07-13 21:01:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-13 21:01:49,735 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 [2021-07-13 21:01:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:49,754 INFO L225 Difference]: With dead ends: 9530 [2021-07-13 21:01:49,754 INFO L226 Difference]: Without dead ends: 9487 [2021-07-13 21:01:49,755 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 845.5ms TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 21:01:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2021-07-13 21:01:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 6991. [2021-07-13 21:01:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 3.486123032904149) internal successors, (24368), 6990 states have internal predecessors, (24368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 24368 transitions. [2021-07-13 21:01:49,876 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 24368 transitions. Word has length 39 [2021-07-13 21:01:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:49,876 INFO L482 AbstractCegarLoop]: Abstraction has 6991 states and 24368 transitions. [2021-07-13 21:01:49,876 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) [2021-07-13 21:01:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 24368 transitions. [2021-07-13 21:01:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:49,886 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:49,886 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:49,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-07-13 21:01:49,886 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:49,886 INFO L82 PathProgramCache]: Analyzing trace with hash -248129208, now seen corresponding path program 247 times [2021-07-13 21:01:49,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:49,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413885650] [2021-07-13 21:01:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:50,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:50,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413885650] [2021-07-13 21:01:50,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413885650] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:50,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:50,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:50,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490529705] [2021-07-13 21:01:50,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:50,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:50,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:50,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:50,115 INFO L87 Difference]: Start difference. First operand 6991 states and 24368 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) [2021-07-13 21:01:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:51,892 INFO L93 Difference]: Finished difference Result 9712 states and 33226 transitions. [2021-07-13 21:01:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 21:01:51,892 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 [2021-07-13 21:01:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:51,911 INFO L225 Difference]: With dead ends: 9712 [2021-07-13 21:01:51,911 INFO L226 Difference]: Without dead ends: 9669 [2021-07-13 21:01:51,912 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1023.6ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 21:01:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2021-07-13 21:01:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 6987. [2021-07-13 21:01:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4866876610363584) internal successors, (24358), 6986 states have internal predecessors, (24358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24358 transitions. [2021-07-13 21:01:52,034 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24358 transitions. Word has length 39 [2021-07-13 21:01:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:52,034 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24358 transitions. [2021-07-13 21:01:52,034 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) [2021-07-13 21:01:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24358 transitions. [2021-07-13 21:01:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:52,044 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:52,044 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:52,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-07-13 21:01:52,044 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:52,044 INFO L82 PathProgramCache]: Analyzing trace with hash 904374280, now seen corresponding path program 248 times [2021-07-13 21:01:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:52,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114949173] [2021-07-13 21:01:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:52,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:52,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114949173] [2021-07-13 21:01:52,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114949173] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:52,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:52,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:52,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946602332] [2021-07-13 21:01:52,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:52,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:52,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:52,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:52,224 INFO L87 Difference]: Start difference. First operand 6987 states and 24358 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) [2021-07-13 21:01:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:54,525 INFO L93 Difference]: Finished difference Result 10752 states and 36838 transitions. [2021-07-13 21:01:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 21:01:54,525 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 [2021-07-13 21:01:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:54,547 INFO L225 Difference]: With dead ends: 10752 [2021-07-13 21:01:54,547 INFO L226 Difference]: Without dead ends: 10692 [2021-07-13 21:01:54,547 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1287.3ms TimeCoverageRelationStatistics Valid=398, Invalid=4158, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 21:01:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10692 states. [2021-07-13 21:01:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10692 to 6987. [2021-07-13 21:01:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4875465216146577) internal successors, (24364), 6986 states have internal predecessors, (24364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24364 transitions. [2021-07-13 21:01:54,710 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24364 transitions. Word has length 39 [2021-07-13 21:01:54,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:54,710 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24364 transitions. [2021-07-13 21:01:54,710 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) [2021-07-13 21:01:54,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24364 transitions. [2021-07-13 21:01:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:54,720 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:54,720 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:54,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-07-13 21:01:54,720 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:54,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1175192262, now seen corresponding path program 249 times [2021-07-13 21:01:54,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:54,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985054326] [2021-07-13 21:01:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:54,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:54,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985054326] [2021-07-13 21:01:54,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985054326] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:54,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:54,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-13 21:01:54,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842848293] [2021-07-13 21:01:54,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 21:01:54,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:54,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 21:01:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-13 21:01:54,888 INFO L87 Difference]: Start difference. First operand 6987 states and 24364 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) [2021-07-13 21:01:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:56,839 INFO L93 Difference]: Finished difference Result 10732 states and 36775 transitions. [2021-07-13 21:01:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 21:01:56,839 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 [2021-07-13 21:01:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:56,861 INFO L225 Difference]: With dead ends: 10732 [2021-07-13 21:01:56,862 INFO L226 Difference]: Without dead ends: 10656 [2021-07-13 21:01:56,862 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1035.3ms TimeCoverageRelationStatistics Valid=322, Invalid=3218, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 21:01:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2021-07-13 21:01:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 6999. [2021-07-13 21:01:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 3.4849957130608744) internal successors, (24388), 6998 states have internal predecessors, (24388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 24388 transitions. [2021-07-13 21:01:57,023 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 24388 transitions. Word has length 39 [2021-07-13 21:01:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:57,023 INFO L482 AbstractCegarLoop]: Abstraction has 6999 states and 24388 transitions. [2021-07-13 21:01:57,023 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) [2021-07-13 21:01:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 24388 transitions. [2021-07-13 21:01:57,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:57,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:57,033 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:57,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-07-13 21:01:57,033 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:57,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2101721422, now seen corresponding path program 250 times [2021-07-13 21:01:57,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:57,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816148384] [2021-07-13 21:01:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:57,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:57,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816148384] [2021-07-13 21:01:57,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816148384] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:57,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:57,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:57,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577867883] [2021-07-13 21:01:57,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:57,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:57,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:57,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:57,213 INFO L87 Difference]: Start difference. First operand 6999 states and 24388 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) [2021-07-13 21:01:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 21:01:59,476 INFO L93 Difference]: Finished difference Result 10738 states and 36791 transitions. [2021-07-13 21:01:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 21:01:59,476 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 [2021-07-13 21:01:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 21:01:59,496 INFO L225 Difference]: With dead ends: 10738 [2021-07-13 21:01:59,496 INFO L226 Difference]: Without dead ends: 10668 [2021-07-13 21:01:59,497 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 1268.5ms TimeCoverageRelationStatistics Valid=373, Invalid=3917, Unknown=0, NotChecked=0, Total=4290 [2021-07-13 21:01:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2021-07-13 21:01:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 6987. [2021-07-13 21:01:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4866876610363584) internal successors, (24358), 6986 states have internal predecessors, (24358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 21:01:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24358 transitions. [2021-07-13 21:01:59,621 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24358 transitions. Word has length 39 [2021-07-13 21:01:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 21:01:59,621 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24358 transitions. [2021-07-13 21:01:59,621 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) [2021-07-13 21:01:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24358 transitions. [2021-07-13 21:01:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 21:01:59,631 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 21:01:59,631 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 21:01:59,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-07-13 21:01:59,631 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 21:01:59,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 21:01:59,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1716858004, now seen corresponding path program 251 times [2021-07-13 21:01:59,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 21:01:59,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425198604] [2021-07-13 21:01:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 21:01:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 21:01:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 21:01:59,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 21:01:59,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425198604] [2021-07-13 21:01:59,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425198604] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 21:01:59,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 21:01:59,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 21:01:59,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023135859] [2021-07-13 21:01:59,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 21:01:59,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 21:01:59,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 21:01:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-13 21:01:59,811 INFO L87 Difference]: Start difference. First operand 6987 states and 24358 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... [2021-07-13 21:02:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 21:02:00,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-07-13 21:02:00,014 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 21:02:00,015 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 21:02:00,017 WARN L196 ceAbstractionStarter]: Timeout [2021-07-13 21:02:00,017 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:02:00 BasicIcfg [2021-07-13 21:02:00,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 21:02:00,018 INFO L168 Benchmark]: Toolchain (without parser) took 714142.54 ms. Allocated memory was 190.8 MB in the beginning and 1.2 GB in the end (delta: 968.9 MB). Free memory was 171.5 MB in the beginning and 711.0 MB in the end (delta: -539.5 MB). Peak memory consumption was 432.0 MB. Max. memory is 8.0 GB. [2021-07-13 21:02:00,018 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 190.8 MB. Free memory is still 172.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 21:02:00,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.74 ms. Allocated memory is still 190.8 MB. Free memory was 171.4 MB in the beginning and 169.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 21:02:00,018 INFO L168 Benchmark]: Boogie Preprocessor took 18.97 ms. Allocated memory is still 190.8 MB. Free memory was 169.9 MB in the beginning and 169.0 MB in the end (delta: 906.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 21:02:00,018 INFO L168 Benchmark]: RCFGBuilder took 231.23 ms. Allocated memory is still 190.8 MB. Free memory was 168.8 MB in the beginning and 156.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 21:02:00,018 INFO L168 Benchmark]: TraceAbstraction took 713861.35 ms. Allocated memory was 190.8 MB in the beginning and 1.2 GB in the end (delta: 968.9 MB). Free memory was 155.6 MB in the beginning and 711.0 MB in the end (delta: -555.4 MB). Peak memory consumption was 414.2 MB. Max. memory is 8.0 GB. [2021-07-13 21:02:00,018 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 0.12 ms. Allocated memory is still 190.8 MB. Free memory is still 172.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.74 ms. Allocated memory is still 190.8 MB. Free memory was 171.4 MB in the beginning and 169.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.97 ms. Allocated memory is still 190.8 MB. Free memory was 169.9 MB in the beginning and 169.0 MB in the end (delta: 906.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 231.23 ms. Allocated memory is still 190.8 MB. Free memory was 168.8 MB in the beginning and 156.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 713861.35 ms. Allocated memory was 190.8 MB in the beginning and 1.2 GB in the end (delta: 968.9 MB). Free memory was 155.6 MB in the beginning and 711.0 MB in the end (delta: -555.4 MB). Peak memory consumption was 414.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (6987states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 23 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 713728.7ms, OverallIterations: 251, TraceHistogramMax: 1, EmptinessCheckTime: 2464.9ms, AutomataDifference: 629027.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 237.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 67936 SDtfs, 120643 SDslu, 650584 SDs, 0 SdLazy, 716175 SolverSat, 20209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 235488.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18291 GetRequests, 305 SyntacticMatches, 520 SemanticMatches, 17465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433800 ImplicationChecksByTransitivity, 350437.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7084occurred in iteration=236, InterpolantAutomatonStates: 17027, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30663.1ms AutomataMinimizationTime, 250 MinimizatonAttempts, 878544 StatesRemovedByMinimization, 248 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 134.6ms SsaConstructionTime, 511.1ms SatisfiabilityAnalysisTime, 49688.5ms InterpolantComputationTime, 9789 NumberOfCodeBlocks, 9789 NumberOfCodeBlocksAsserted, 251 NumberOfCheckSat, 9538 ConstructedInterpolants, 0 QuantifiedInterpolants, 119521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 251 InterpolantComputations, 251 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