/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 20:38:53,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 20:38:53,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 20:38:53,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 20:38:53,290 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 [2021-02-19 20:38:53,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 20:38:53,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 20:38:53,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 20:38:53,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 20:38:53,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 20:38:53,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 20:38:53,332 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 20:38:53,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 20:38:53,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 20:38:53,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 20:38:53,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 20:38:53,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 20:38:53,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 20:38:53,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 20:38:53,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 20:38:53,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 20:38:53,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 20:38:53,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 20:38:53,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 20:38:53,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 20:38:53,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 20:38:53,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 20:38:53,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 20:38:53,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 20:38:53,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 20:38:53,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 20:38:53,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 20:38:53,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 20:38:53,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 20:38:53,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 20:38:53,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 20:38:53,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 20:38:53,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 20:38:53,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 20:38:53,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 20:38:53,687 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 20:38:53,689 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 20:38:53,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-02-19 20:38:53,690 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-02-19 20:38:53,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 20:38:53,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 20:38:53,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 20:38:53,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 20:38:53,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 20:38:53,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 20:38:53,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 20:38:53,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 20:38:53,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 20:38:53,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/1) ... [2021-02-19 20:38:53,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 20:38:53,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 20:38:53,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 20:38:53,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 20:38:53,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (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 [2021-02-19 20:38:53,856 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-19 20:38:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-19 20:38:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-19 20:38:53,856 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-19 20:38:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-19 20:38:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-19 20:38:53,857 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 20:38:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 20:38:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 20:38:53,857 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-02-19 20:38:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-02-19 20:38:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-02-19 20:38:53,857 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-02-19 20:38:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-02-19 20:38:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-02-19 20:38:53,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-19 20:38:54,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 20:38:54,012 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 20:38:54,013 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 08:38:54 BoogieIcfgContainer [2021-02-19 20:38:54,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 20:38:54,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 20:38:54,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 20:38:54,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 20:38:54,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:38:53" (1/2) ... [2021-02-19 20:38:54,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d50575f and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 08:38:54, skipping insertion in model container [2021-02-19 20:38:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 08:38:54" (2/2) ... [2021-02-19 20:38:54,020 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-02-19 20:38:54,024 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-19 20:38:54,024 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 20:38:54,027 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 20:38:54,028 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-19 20:38:54,069 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-02-19 20:38:54,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-19 20:38:54,099 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 20:38:54,099 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 20:38:54,100 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 20:38:54,100 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 20:38:54,100 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 20:38:54,100 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 20:38:54,100 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 20:38:54,100 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 20:38:54,108 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-02-19 20:38:54,532 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:38:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:38:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:38:54,603 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:38:54,604 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:38:54,605 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:38:54,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:38:54,617 INFO L82 PathProgramCache]: Analyzing trace with hash 908112310, now seen corresponding path program 1 times [2021-02-19 20:38:54,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:38:54,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506594888] [2021-02-19 20:38:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:38:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:38:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:38:54,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506594888] [2021-02-19 20:38:54,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:38:54,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-02-19 20:38:54,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756991493] [2021-02-19 20:38:54,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 20:38:54,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:38:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 20:38:54,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:38:54,845 INFO L87 Difference]: Start difference. First operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:38:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:38:54,924 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-02-19 20:38:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 20:38:54,926 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 [2021-02-19 20:38:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:38:54,980 INFO L225 Difference]: With dead ends: 4197 [2021-02-19 20:38:54,980 INFO L226 Difference]: Without dead ends: 4197 [2021-02-19 20:38:54,981 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:38:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-02-19 20:38:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-02-19 20:38:55,288 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) [2021-02-19 20:38:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-02-19 20:38:55,327 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-02-19 20:38:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:38:55,327 INFO L480 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-02-19 20:38:55,328 INFO L481 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) [2021-02-19 20:38:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-02-19 20:38:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:38:55,372 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:38:55,373 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:38:55,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 20:38:55,374 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:38:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:38:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash -409936054, now seen corresponding path program 2 times [2021-02-19 20:38:55,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:38:55,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158908556] [2021-02-19 20:38:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:38:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:38:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:38:55,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158908556] [2021-02-19 20:38:55,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:38:55,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-02-19 20:38:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809009084] [2021-02-19 20:38:55,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 20:38:55,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:38:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 20:38:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:38:55,418 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) [2021-02-19 20:38:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:38:55,456 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-02-19 20:38:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 20:38:55,457 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 [2021-02-19 20:38:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:38:55,485 INFO L225 Difference]: With dead ends: 3290 [2021-02-19 20:38:55,486 INFO L226 Difference]: Without dead ends: 3290 [2021-02-19 20:38:55,487 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:38:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-02-19 20:38:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-02-19 20:38:55,629 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) [2021-02-19 20:38:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-02-19 20:38:55,645 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-02-19 20:38:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:38:55,645 INFO L480 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-02-19 20:38:55,645 INFO L481 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) [2021-02-19 20:38:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-02-19 20:38:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:38:55,662 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:38:55,662 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:38:55,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 20:38:55,663 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:38:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:38:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 749784870, now seen corresponding path program 3 times [2021-02-19 20:38:55,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:38:55,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498505329] [2021-02-19 20:38:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:38:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:38:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:38:56,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498505329] [2021-02-19 20:38:56,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:38:56,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:38:56,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256247788] [2021-02-19 20:38:56,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:38:56,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:38:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:38:56,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:38:56,249 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) [2021-02-19 20:38:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:38:57,572 INFO L93 Difference]: Finished difference Result 3661 states and 12223 transitions. [2021-02-19 20:38:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-19 20:38:57,573 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 [2021-02-19 20:38:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:38:57,597 INFO L225 Difference]: With dead ends: 3661 [2021-02-19 20:38:57,598 INFO L226 Difference]: Without dead ends: 3594 [2021-02-19 20:38:57,599 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:38:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-02-19 20:38:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3418. [2021-02-19 20:38:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3417 states have (on average 3.359964881474978) internal successors, (11481), 3417 states have internal predecessors, (11481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:38:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 11481 transitions. [2021-02-19 20:38:57,731 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 11481 transitions. Word has length 39 [2021-02-19 20:38:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:38:57,732 INFO L480 AbstractCegarLoop]: Abstraction has 3418 states and 11481 transitions. [2021-02-19 20:38:57,732 INFO L481 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) [2021-02-19 20:38:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 11481 transitions. [2021-02-19 20:38:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:38:57,745 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:38:57,745 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:38:57,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 20:38:57,746 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:38:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:38:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1132629212, now seen corresponding path program 4 times [2021-02-19 20:38:57,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:38:57,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441406385] [2021-02-19 20:38:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:38:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:38:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:38:58,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441406385] [2021-02-19 20:38:58,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:38:58,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:38:58,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916522726] [2021-02-19 20:38:58,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:38:58,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:38:58,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:38:58,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:38:58,043 INFO L87 Difference]: Start difference. First operand 3418 states and 11481 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) [2021-02-19 20:38:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:38:59,659 INFO L93 Difference]: Finished difference Result 3717 states and 12358 transitions. [2021-02-19 20:38:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:38:59,660 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 [2021-02-19 20:38:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:38:59,699 INFO L225 Difference]: With dead ends: 3717 [2021-02-19 20:38:59,700 INFO L226 Difference]: Without dead ends: 3674 [2021-02-19 20:38:59,701 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:38:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2021-02-19 20:38:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3424. [2021-02-19 20:38:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 3.357873210633947) internal successors, (11494), 3423 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:38:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 11494 transitions. [2021-02-19 20:38:59,817 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 11494 transitions. Word has length 39 [2021-02-19 20:38:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:38:59,818 INFO L480 AbstractCegarLoop]: Abstraction has 3424 states and 11494 transitions. [2021-02-19 20:38:59,818 INFO L481 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) [2021-02-19 20:38:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 11494 transitions. [2021-02-19 20:38:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:38:59,830 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:38:59,830 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:38:59,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 20:38:59,830 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:38:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:38:59,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1381739782, now seen corresponding path program 5 times [2021-02-19 20:38:59,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:38:59,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863569280] [2021-02-19 20:38:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:38:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:00,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863569280] [2021-02-19 20:39:00,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:00,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:39:00,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24368166] [2021-02-19 20:39:00,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:39:00,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:00,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:39:00,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:39:00,075 INFO L87 Difference]: Start difference. First operand 3424 states and 11494 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) [2021-02-19 20:39:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:01,530 INFO L93 Difference]: Finished difference Result 3672 states and 12254 transitions. [2021-02-19 20:39:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:39:01,531 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 [2021-02-19 20:39:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:01,549 INFO L225 Difference]: With dead ends: 3672 [2021-02-19 20:39:01,549 INFO L226 Difference]: Without dead ends: 3608 [2021-02-19 20:39:01,550 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:39:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2021-02-19 20:39:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3406. [2021-02-19 20:39:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3606461086637296) internal successors, (11443), 3405 states have internal predecessors, (11443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11443 transitions. [2021-02-19 20:39:01,671 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11443 transitions. Word has length 39 [2021-02-19 20:39:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:01,671 INFO L480 AbstractCegarLoop]: Abstraction has 3406 states and 11443 transitions. [2021-02-19 20:39:01,671 INFO L481 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) [2021-02-19 20:39:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11443 transitions. [2021-02-19 20:39:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:01,682 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:01,682 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:01,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 20:39:01,683 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:01,683 INFO L82 PathProgramCache]: Analyzing trace with hash 972924166, now seen corresponding path program 6 times [2021-02-19 20:39:01,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:01,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117930840] [2021-02-19 20:39:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:01,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117930840] [2021-02-19 20:39:01,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:01,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:39:01,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132150655] [2021-02-19 20:39:01,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:39:01,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:01,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:39:01,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:39:01,962 INFO L87 Difference]: Start difference. First operand 3406 states and 11443 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) [2021-02-19 20:39:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:03,368 INFO L93 Difference]: Finished difference Result 3717 states and 12377 transitions. [2021-02-19 20:39:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:39:03,368 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 [2021-02-19 20:39:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:03,384 INFO L225 Difference]: With dead ends: 3717 [2021-02-19 20:39:03,384 INFO L226 Difference]: Without dead ends: 3587 [2021-02-19 20:39:03,385 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:39:03,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-02-19 20:39:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3382. [2021-02-19 20:39:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 3.3632061520260277) internal successors, (11371), 3381 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 11371 transitions. [2021-02-19 20:39:03,503 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 11371 transitions. Word has length 39 [2021-02-19 20:39:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:03,504 INFO L480 AbstractCegarLoop]: Abstraction has 3382 states and 11371 transitions. [2021-02-19 20:39:03,504 INFO L481 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) [2021-02-19 20:39:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 11371 transitions. [2021-02-19 20:39:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:03,515 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:03,515 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:03,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 20:39:03,516 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:03,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:03,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1321293166, now seen corresponding path program 7 times [2021-02-19 20:39:03,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:03,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505233027] [2021-02-19 20:39:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:03,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505233027] [2021-02-19 20:39:03,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:03,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:03,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861684121] [2021-02-19 20:39:03,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:03,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:03,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:03,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:03,804 INFO L87 Difference]: Start difference. First operand 3382 states and 11371 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) [2021-02-19 20:39:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:05,024 INFO L93 Difference]: Finished difference Result 3691 states and 12292 transitions. [2021-02-19 20:39:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-19 20:39:05,024 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 [2021-02-19 20:39:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:05,041 INFO L225 Difference]: With dead ends: 3691 [2021-02-19 20:39:05,041 INFO L226 Difference]: Without dead ends: 3624 [2021-02-19 20:39:05,042 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:39:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-02-19 20:39:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3398. [2021-02-19 20:39:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3397 states have (on average 3.3591404180158966) internal successors, (11411), 3397 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 11411 transitions. [2021-02-19 20:39:05,153 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 11411 transitions. Word has length 39 [2021-02-19 20:39:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:05,154 INFO L480 AbstractCegarLoop]: Abstraction has 3398 states and 11411 transitions. [2021-02-19 20:39:05,154 INFO L481 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) [2021-02-19 20:39:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 11411 transitions. [2021-02-19 20:39:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:05,166 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:05,166 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:05,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 20:39:05,166 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1091260048, now seen corresponding path program 8 times [2021-02-19 20:39:05,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:05,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875426158] [2021-02-19 20:39:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:05,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875426158] [2021-02-19 20:39:05,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:05,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:05,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076806320] [2021-02-19 20:39:05,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:05,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:05,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:05,546 INFO L87 Difference]: Start difference. First operand 3398 states and 11411 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:06,955 INFO L93 Difference]: Finished difference Result 3780 states and 12493 transitions. [2021-02-19 20:39:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:39:06,955 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 [2021-02-19 20:39:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:06,971 INFO L225 Difference]: With dead ends: 3780 [2021-02-19 20:39:06,971 INFO L226 Difference]: Without dead ends: 3737 [2021-02-19 20:39:06,973 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:39:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-02-19 20:39:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3404. [2021-02-19 20:39:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 3.3570379077284747) internal successors, (11424), 3403 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 11424 transitions. [2021-02-19 20:39:07,082 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 11424 transitions. Word has length 39 [2021-02-19 20:39:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:07,082 INFO L480 AbstractCegarLoop]: Abstraction has 3404 states and 11424 transitions. [2021-02-19 20:39:07,082 INFO L481 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) [2021-02-19 20:39:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 11424 transitions. [2021-02-19 20:39:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:07,093 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:07,093 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:07,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-19 20:39:07,093 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash -689338254, now seen corresponding path program 9 times [2021-02-19 20:39:07,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:07,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283587856] [2021-02-19 20:39:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:07,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283587856] [2021-02-19 20:39:07,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:07,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:07,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209904263] [2021-02-19 20:39:07,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:07,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:07,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:07,387 INFO L87 Difference]: Start difference. First operand 3404 states and 11424 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) [2021-02-19 20:39:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:08,842 INFO L93 Difference]: Finished difference Result 3735 states and 12389 transitions. [2021-02-19 20:39:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:39:08,843 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 [2021-02-19 20:39:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:08,855 INFO L225 Difference]: With dead ends: 3735 [2021-02-19 20:39:08,855 INFO L226 Difference]: Without dead ends: 3671 [2021-02-19 20:39:08,856 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:39:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-02-19 20:39:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3386. [2021-02-19 20:39:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3621861152141803) internal successors, (11381), 3385 states have internal predecessors, (11381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11381 transitions. [2021-02-19 20:39:08,962 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11381 transitions. Word has length 39 [2021-02-19 20:39:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:08,963 INFO L480 AbstractCegarLoop]: Abstraction has 3386 states and 11381 transitions. [2021-02-19 20:39:08,963 INFO L481 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) [2021-02-19 20:39:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11381 transitions. [2021-02-19 20:39:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:08,971 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:08,971 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:08,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-19 20:39:08,972 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 873121924, now seen corresponding path program 10 times [2021-02-19 20:39:08,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:08,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062475077] [2021-02-19 20:39:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:09,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062475077] [2021-02-19 20:39:09,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:09,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:09,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066975061] [2021-02-19 20:39:09,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:09,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:09,246 INFO L87 Difference]: Start difference. First operand 3386 states and 11381 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) [2021-02-19 20:39:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:10,310 INFO L93 Difference]: Finished difference Result 3643 states and 12154 transitions. [2021-02-19 20:39:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 20:39:10,310 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 [2021-02-19 20:39:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:10,323 INFO L225 Difference]: With dead ends: 3643 [2021-02-19 20:39:10,323 INFO L226 Difference]: Without dead ends: 3576 [2021-02-19 20:39:10,324 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:39:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2021-02-19 20:39:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3394. [2021-02-19 20:39:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.358974358974359) internal successors, (11397), 3393 states have internal predecessors, (11397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11397 transitions. [2021-02-19 20:39:10,430 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11397 transitions. Word has length 39 [2021-02-19 20:39:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:10,430 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11397 transitions. [2021-02-19 20:39:10,430 INFO L481 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) [2021-02-19 20:39:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11397 transitions. [2021-02-19 20:39:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:10,440 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:10,440 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:10,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-19 20:39:10,441 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash 700978706, now seen corresponding path program 11 times [2021-02-19 20:39:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:10,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207037927] [2021-02-19 20:39:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:10,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207037927] [2021-02-19 20:39:10,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:10,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:10,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582114955] [2021-02-19 20:39:10,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:10,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:10,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:10,705 INFO L87 Difference]: Start difference. First operand 3394 states and 11397 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) [2021-02-19 20:39:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:11,758 INFO L93 Difference]: Finished difference Result 3631 states and 12114 transitions. [2021-02-19 20:39:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:39:11,758 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 [2021-02-19 20:39:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:11,769 INFO L225 Difference]: With dead ends: 3631 [2021-02-19 20:39:11,769 INFO L226 Difference]: Without dead ends: 3568 [2021-02-19 20:39:11,770 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:39:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-02-19 20:39:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3386. [2021-02-19 20:39:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3610044313146235) internal successors, (11377), 3385 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11377 transitions. [2021-02-19 20:39:11,866 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11377 transitions. Word has length 39 [2021-02-19 20:39:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:11,867 INFO L480 AbstractCegarLoop]: Abstraction has 3386 states and 11377 transitions. [2021-02-19 20:39:11,868 INFO L481 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) [2021-02-19 20:39:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11377 transitions. [2021-02-19 20:39:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:11,878 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:11,878 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:11,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-19 20:39:11,879 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:11,879 INFO L82 PathProgramCache]: Analyzing trace with hash -335177294, now seen corresponding path program 12 times [2021-02-19 20:39:11,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:11,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633849023] [2021-02-19 20:39:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:12,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633849023] [2021-02-19 20:39:12,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:12,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:12,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280419180] [2021-02-19 20:39:12,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:12,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:12,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:12,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:12,184 INFO L87 Difference]: Start difference. First operand 3386 states and 11377 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) [2021-02-19 20:39:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:13,580 INFO L93 Difference]: Finished difference Result 3769 states and 12461 transitions. [2021-02-19 20:39:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-19 20:39:13,580 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 [2021-02-19 20:39:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:13,590 INFO L225 Difference]: With dead ends: 3769 [2021-02-19 20:39:13,590 INFO L226 Difference]: Without dead ends: 3726 [2021-02-19 20:39:13,591 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-02-19 20:39:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2021-02-19 20:39:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3394. [2021-02-19 20:39:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.358974358974359) internal successors, (11397), 3393 states have internal predecessors, (11397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11397 transitions. [2021-02-19 20:39:13,687 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11397 transitions. Word has length 39 [2021-02-19 20:39:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:13,687 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11397 transitions. [2021-02-19 20:39:13,687 INFO L481 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) [2021-02-19 20:39:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11397 transitions. [2021-02-19 20:39:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:13,698 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:13,698 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:13,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-19 20:39:13,698 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:13,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2115775596, now seen corresponding path program 13 times [2021-02-19 20:39:13,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:13,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117235407] [2021-02-19 20:39:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:13,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117235407] [2021-02-19 20:39:13,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:13,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:13,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413561900] [2021-02-19 20:39:13,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:13,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:13,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:13,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:13,944 INFO L87 Difference]: Start difference. First operand 3394 states and 11397 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) [2021-02-19 20:39:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:15,346 INFO L93 Difference]: Finished difference Result 3757 states and 12423 transitions. [2021-02-19 20:39:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:39:15,346 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 [2021-02-19 20:39:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:15,358 INFO L225 Difference]: With dead ends: 3757 [2021-02-19 20:39:15,358 INFO L226 Difference]: Without dead ends: 3705 [2021-02-19 20:39:15,359 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:39:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-02-19 20:39:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3388. [2021-02-19 20:39:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.3604960141718334) internal successors, (11382), 3387 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11382 transitions. [2021-02-19 20:39:15,442 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11382 transitions. Word has length 39 [2021-02-19 20:39:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:15,442 INFO L480 AbstractCegarLoop]: Abstraction has 3388 states and 11382 transitions. [2021-02-19 20:39:15,442 INFO L481 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) [2021-02-19 20:39:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11382 transitions. [2021-02-19 20:39:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:15,450 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:15,450 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:15,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-19 20:39:15,451 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash 583306276, now seen corresponding path program 14 times [2021-02-19 20:39:15,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:15,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196631810] [2021-02-19 20:39:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:15,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196631810] [2021-02-19 20:39:15,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:15,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:15,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841908747] [2021-02-19 20:39:15,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:15,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:15,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:15,749 INFO L87 Difference]: Start difference. First operand 3388 states and 11382 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) [2021-02-19 20:39:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:16,825 INFO L93 Difference]: Finished difference Result 3718 states and 12302 transitions. [2021-02-19 20:39:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:39:16,826 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 [2021-02-19 20:39:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:16,836 INFO L225 Difference]: With dead ends: 3718 [2021-02-19 20:39:16,836 INFO L226 Difference]: Without dead ends: 3663 [2021-02-19 20:39:16,837 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:39:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-02-19 20:39:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3388. [2021-02-19 20:39:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.359905521110127) internal successors, (11380), 3387 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11380 transitions. [2021-02-19 20:39:16,910 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11380 transitions. Word has length 39 [2021-02-19 20:39:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:16,910 INFO L480 AbstractCegarLoop]: Abstraction has 3388 states and 11380 transitions. [2021-02-19 20:39:16,910 INFO L481 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) [2021-02-19 20:39:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11380 transitions. [2021-02-19 20:39:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:16,919 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:16,919 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:16,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-19 20:39:16,919 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1755958498, now seen corresponding path program 15 times [2021-02-19 20:39:16,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:16,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089080869] [2021-02-19 20:39:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:17,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089080869] [2021-02-19 20:39:17,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:17,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:17,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106022103] [2021-02-19 20:39:17,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:17,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:17,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:17,138 INFO L87 Difference]: Start difference. First operand 3388 states and 11380 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) [2021-02-19 20:39:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:18,198 INFO L93 Difference]: Finished difference Result 3628 states and 12104 transitions. [2021-02-19 20:39:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-19 20:39:18,198 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 [2021-02-19 20:39:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:18,208 INFO L225 Difference]: With dead ends: 3628 [2021-02-19 20:39:18,208 INFO L226 Difference]: Without dead ends: 3564 [2021-02-19 20:39:18,209 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:39:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-02-19 20:39:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3382. [2021-02-19 20:39:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 3.3620230700976044) internal successors, (11367), 3381 states have internal predecessors, (11367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 11367 transitions. [2021-02-19 20:39:18,287 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 11367 transitions. Word has length 39 [2021-02-19 20:39:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:18,287 INFO L480 AbstractCegarLoop]: Abstraction has 3382 states and 11367 transitions. [2021-02-19 20:39:18,287 INFO L481 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) [2021-02-19 20:39:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 11367 transitions. [2021-02-19 20:39:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:18,295 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:18,295 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:18,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-19 20:39:18,295 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:18,296 INFO L82 PathProgramCache]: Analyzing trace with hash -296960476, now seen corresponding path program 16 times [2021-02-19 20:39:18,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:18,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456188171] [2021-02-19 20:39:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:18,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456188171] [2021-02-19 20:39:18,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:18,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:18,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917725164] [2021-02-19 20:39:18,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:18,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:18,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:18,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:18,532 INFO L87 Difference]: Start difference. First operand 3382 states and 11367 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) [2021-02-19 20:39:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:19,980 INFO L93 Difference]: Finished difference Result 3835 states and 12644 transitions. [2021-02-19 20:39:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:39:19,981 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 [2021-02-19 20:39:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:19,991 INFO L225 Difference]: With dead ends: 3835 [2021-02-19 20:39:19,992 INFO L226 Difference]: Without dead ends: 3698 [2021-02-19 20:39:19,992 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:39:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-02-19 20:39:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3386. [2021-02-19 20:39:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3610044313146235) internal successors, (11377), 3385 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11377 transitions. [2021-02-19 20:39:20,083 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11377 transitions. Word has length 39 [2021-02-19 20:39:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:20,084 INFO L480 AbstractCegarLoop]: Abstraction has 3386 states and 11377 transitions. [2021-02-19 20:39:20,084 INFO L481 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) [2021-02-19 20:39:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11377 transitions. [2021-02-19 20:39:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:20,093 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:20,093 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:20,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-19 20:39:20,093 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:20,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1791851376, now seen corresponding path program 17 times [2021-02-19 20:39:20,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:20,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739871810] [2021-02-19 20:39:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:20,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739871810] [2021-02-19 20:39:20,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:20,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:20,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219395357] [2021-02-19 20:39:20,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:20,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:20,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:20,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:20,330 INFO L87 Difference]: Start difference. First operand 3386 states and 11377 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) [2021-02-19 20:39:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:21,821 INFO L93 Difference]: Finished difference Result 3873 states and 12714 transitions. [2021-02-19 20:39:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:39:21,822 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 [2021-02-19 20:39:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:21,833 INFO L225 Difference]: With dead ends: 3873 [2021-02-19 20:39:21,833 INFO L226 Difference]: Without dead ends: 3809 [2021-02-19 20:39:21,834 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:39:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2021-02-19 20:39:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3388. [2021-02-19 20:39:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.3604960141718334) internal successors, (11382), 3387 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11382 transitions. [2021-02-19 20:39:21,925 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11382 transitions. Word has length 39 [2021-02-19 20:39:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:21,926 INFO L480 AbstractCegarLoop]: Abstraction has 3388 states and 11382 transitions. [2021-02-19 20:39:21,926 INFO L481 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) [2021-02-19 20:39:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11382 transitions. [2021-02-19 20:39:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:21,935 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:21,935 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:21,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-19 20:39:21,936 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:21,936 INFO L82 PathProgramCache]: Analyzing trace with hash -873367806, now seen corresponding path program 18 times [2021-02-19 20:39:21,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:21,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338679517] [2021-02-19 20:39:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:22,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338679517] [2021-02-19 20:39:22,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:22,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:22,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019993342] [2021-02-19 20:39:22,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:22,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:22,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:22,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:22,203 INFO L87 Difference]: Start difference. First operand 3388 states and 11382 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) [2021-02-19 20:39:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:23,411 INFO L93 Difference]: Finished difference Result 3774 states and 12450 transitions. [2021-02-19 20:39:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-19 20:39:23,411 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 [2021-02-19 20:39:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:23,421 INFO L225 Difference]: With dead ends: 3774 [2021-02-19 20:39:23,421 INFO L226 Difference]: Without dead ends: 3719 [2021-02-19 20:39:23,422 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:39:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-02-19 20:39:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3388. [2021-02-19 20:39:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.359905521110127) internal successors, (11380), 3387 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11380 transitions. [2021-02-19 20:39:23,489 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11380 transitions. Word has length 39 [2021-02-19 20:39:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:23,489 INFO L480 AbstractCegarLoop]: Abstraction has 3388 states and 11380 transitions. [2021-02-19 20:39:23,489 INFO L481 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) [2021-02-19 20:39:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11380 transitions. [2021-02-19 20:39:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:23,494 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:23,494 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:23,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-19 20:39:23,494 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:23,494 INFO L82 PathProgramCache]: Analyzing trace with hash 299284416, now seen corresponding path program 19 times [2021-02-19 20:39:23,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:23,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124289610] [2021-02-19 20:39:23,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:23,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124289610] [2021-02-19 20:39:23,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:23,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:23,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116329545] [2021-02-19 20:39:23,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:23,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:23,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:23,726 INFO L87 Difference]: Start difference. First operand 3388 states and 11380 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) [2021-02-19 20:39:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:24,853 INFO L93 Difference]: Finished difference Result 3744 states and 12389 transitions. [2021-02-19 20:39:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:39:24,853 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 [2021-02-19 20:39:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:24,862 INFO L225 Difference]: With dead ends: 3744 [2021-02-19 20:39:24,862 INFO L226 Difference]: Without dead ends: 3684 [2021-02-19 20:39:24,862 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:39:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-02-19 20:39:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3386. [2021-02-19 20:39:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.360413589364845) internal successors, (11375), 3385 states have internal predecessors, (11375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11375 transitions. [2021-02-19 20:39:24,933 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11375 transitions. Word has length 39 [2021-02-19 20:39:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:24,933 INFO L480 AbstractCegarLoop]: Abstraction has 3386 states and 11375 transitions. [2021-02-19 20:39:24,933 INFO L481 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) [2021-02-19 20:39:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11375 transitions. [2021-02-19 20:39:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:24,940 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:24,940 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:24,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-19 20:39:24,940 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:24,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1780282126, now seen corresponding path program 20 times [2021-02-19 20:39:24,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:24,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373515243] [2021-02-19 20:39:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:25,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373515243] [2021-02-19 20:39:25,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:25,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:39:25,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949942246] [2021-02-19 20:39:25,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:39:25,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:25,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:39:25,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:39:25,180 INFO L87 Difference]: Start difference. First operand 3386 states and 11375 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) [2021-02-19 20:39:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:26,289 INFO L93 Difference]: Finished difference Result 3655 states and 12176 transitions. [2021-02-19 20:39:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-19 20:39:26,290 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 [2021-02-19 20:39:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:26,298 INFO L225 Difference]: With dead ends: 3655 [2021-02-19 20:39:26,298 INFO L226 Difference]: Without dead ends: 3579 [2021-02-19 20:39:26,299 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-02-19 20:39:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-02-19 20:39:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3394. [2021-02-19 20:39:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.357206012378426) internal successors, (11391), 3393 states have internal predecessors, (11391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11391 transitions. [2021-02-19 20:39:26,363 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11391 transitions. Word has length 39 [2021-02-19 20:39:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:26,363 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11391 transitions. [2021-02-19 20:39:26,363 INFO L481 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) [2021-02-19 20:39:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11391 transitions. [2021-02-19 20:39:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:26,371 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:26,371 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:26,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-19 20:39:26,372 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1496631558, now seen corresponding path program 21 times [2021-02-19 20:39:26,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:26,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560086317] [2021-02-19 20:39:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:26,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560086317] [2021-02-19 20:39:26,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:26,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:26,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840939309] [2021-02-19 20:39:26,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:26,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:26,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:26,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:26,586 INFO L87 Difference]: Start difference. First operand 3394 states and 11391 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) [2021-02-19 20:39:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:27,680 INFO L93 Difference]: Finished difference Result 3637 states and 12122 transitions. [2021-02-19 20:39:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:39:27,680 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 [2021-02-19 20:39:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:27,691 INFO L225 Difference]: With dead ends: 3637 [2021-02-19 20:39:27,691 INFO L226 Difference]: Without dead ends: 3559 [2021-02-19 20:39:27,691 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:39:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2021-02-19 20:39:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3374. [2021-02-19 20:39:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 3.3628817076786244) internal successors, (11343), 3373 states have internal predecessors, (11343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 11343 transitions. [2021-02-19 20:39:27,751 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 11343 transitions. Word has length 39 [2021-02-19 20:39:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:27,751 INFO L480 AbstractCegarLoop]: Abstraction has 3374 states and 11343 transitions. [2021-02-19 20:39:27,751 INFO L481 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) [2021-02-19 20:39:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 11343 transitions. [2021-02-19 20:39:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:27,757 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:27,757 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:27,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-19 20:39:27,757 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:27,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:27,757 INFO L82 PathProgramCache]: Analyzing trace with hash -751425912, now seen corresponding path program 22 times [2021-02-19 20:39:27,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:27,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173021029] [2021-02-19 20:39:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:28,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173021029] [2021-02-19 20:39:28,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:28,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:28,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110694413] [2021-02-19 20:39:28,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:28,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:28,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:28,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:28,006 INFO L87 Difference]: Start difference. First operand 3374 states and 11343 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) [2021-02-19 20:39:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:29,177 INFO L93 Difference]: Finished difference Result 3817 states and 12701 transitions. [2021-02-19 20:39:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-19 20:39:29,177 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 [2021-02-19 20:39:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:29,188 INFO L225 Difference]: With dead ends: 3817 [2021-02-19 20:39:29,188 INFO L226 Difference]: Without dead ends: 3750 [2021-02-19 20:39:29,189 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:39:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-02-19 20:39:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3406. [2021-02-19 20:39:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.358883994126285) internal successors, (11437), 3405 states have internal predecessors, (11437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11437 transitions. [2021-02-19 20:39:29,244 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11437 transitions. Word has length 39 [2021-02-19 20:39:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:29,244 INFO L480 AbstractCegarLoop]: Abstraction has 3406 states and 11437 transitions. [2021-02-19 20:39:29,244 INFO L481 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) [2021-02-19 20:39:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11437 transitions. [2021-02-19 20:39:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:29,249 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:29,249 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:29,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-19 20:39:29,250 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:29,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1661127302, now seen corresponding path program 23 times [2021-02-19 20:39:29,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:29,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163455660] [2021-02-19 20:39:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:29,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163455660] [2021-02-19 20:39:29,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:29,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:29,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499447710] [2021-02-19 20:39:29,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:29,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:29,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:29,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:29,473 INFO L87 Difference]: Start difference. First operand 3406 states and 11437 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) [2021-02-19 20:39:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:30,949 INFO L93 Difference]: Finished difference Result 3906 states and 12902 transitions. [2021-02-19 20:39:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:39:30,949 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 [2021-02-19 20:39:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:30,960 INFO L225 Difference]: With dead ends: 3906 [2021-02-19 20:39:30,960 INFO L226 Difference]: Without dead ends: 3863 [2021-02-19 20:39:30,961 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:39:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2021-02-19 20:39:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3412. [2021-02-19 20:39:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.3567868660216944) internal successors, (11450), 3411 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11450 transitions. [2021-02-19 20:39:31,019 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11450 transitions. Word has length 39 [2021-02-19 20:39:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:31,019 INFO L480 AbstractCegarLoop]: Abstraction has 3412 states and 11450 transitions. [2021-02-19 20:39:31,019 INFO L481 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) [2021-02-19 20:39:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11450 transitions. [2021-02-19 20:39:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:31,026 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:31,026 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:31,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-19 20:39:31,026 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:31,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash -119471000, now seen corresponding path program 24 times [2021-02-19 20:39:31,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:31,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871255052] [2021-02-19 20:39:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:31,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871255052] [2021-02-19 20:39:31,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:31,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:31,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191650261] [2021-02-19 20:39:31,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:31,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:31,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:31,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:31,254 INFO L87 Difference]: Start difference. First operand 3412 states and 11450 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) [2021-02-19 20:39:32,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:32,703 INFO L93 Difference]: Finished difference Result 3861 states and 12798 transitions. [2021-02-19 20:39:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:39:32,704 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 [2021-02-19 20:39:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:32,714 INFO L225 Difference]: With dead ends: 3861 [2021-02-19 20:39:32,715 INFO L226 Difference]: Without dead ends: 3797 [2021-02-19 20:39:32,715 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-02-19 20:39:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-02-19 20:39:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3394. [2021-02-19 20:39:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.361921603300914) internal successors, (11407), 3393 states have internal predecessors, (11407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11407 transitions. [2021-02-19 20:39:32,773 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11407 transitions. Word has length 39 [2021-02-19 20:39:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:32,773 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11407 transitions. [2021-02-19 20:39:32,773 INFO L481 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) [2021-02-19 20:39:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11407 transitions. [2021-02-19 20:39:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:32,778 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:32,779 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:32,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-19 20:39:32,779 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1442989178, now seen corresponding path program 25 times [2021-02-19 20:39:32,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:32,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713783220] [2021-02-19 20:39:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:33,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713783220] [2021-02-19 20:39:33,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:33,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:33,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30271996] [2021-02-19 20:39:33,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:33,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:33,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:33,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:33,052 INFO L87 Difference]: Start difference. First operand 3394 states and 11407 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) [2021-02-19 20:39:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:34,184 INFO L93 Difference]: Finished difference Result 3817 states and 12695 transitions. [2021-02-19 20:39:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-19 20:39:34,185 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 [2021-02-19 20:39:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:34,196 INFO L225 Difference]: With dead ends: 3817 [2021-02-19 20:39:34,196 INFO L226 Difference]: Without dead ends: 3750 [2021-02-19 20:39:34,196 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 20:39:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-02-19 20:39:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3402. [2021-02-19 20:39:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.358718024110556) internal successors, (11423), 3401 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11423 transitions. [2021-02-19 20:39:34,257 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11423 transitions. Word has length 39 [2021-02-19 20:39:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:34,257 INFO L480 AbstractCegarLoop]: Abstraction has 3402 states and 11423 transitions. [2021-02-19 20:39:34,257 INFO L481 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) [2021-02-19 20:39:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11423 transitions. [2021-02-19 20:39:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:34,262 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:34,262 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:34,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-19 20:39:34,262 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:34,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1270845960, now seen corresponding path program 26 times [2021-02-19 20:39:34,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:34,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970085586] [2021-02-19 20:39:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:34,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970085586] [2021-02-19 20:39:34,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:34,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:34,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119473825] [2021-02-19 20:39:34,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:34,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:34,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:34,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:34,491 INFO L87 Difference]: Start difference. First operand 3402 states and 11423 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) [2021-02-19 20:39:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:35,606 INFO L93 Difference]: Finished difference Result 3805 states and 12655 transitions. [2021-02-19 20:39:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:39:35,606 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 [2021-02-19 20:39:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:35,617 INFO L225 Difference]: With dead ends: 3805 [2021-02-19 20:39:35,617 INFO L226 Difference]: Without dead ends: 3742 [2021-02-19 20:39:35,618 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:39:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-02-19 20:39:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3394. [2021-02-19 20:39:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3607427055702916) internal successors, (11403), 3393 states have internal predecessors, (11403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11403 transitions. [2021-02-19 20:39:35,674 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11403 transitions. Word has length 39 [2021-02-19 20:39:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:35,674 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11403 transitions. [2021-02-19 20:39:35,674 INFO L481 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) [2021-02-19 20:39:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11403 transitions. [2021-02-19 20:39:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:35,679 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:35,679 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:35,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-19 20:39:35,679 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash 234689960, now seen corresponding path program 27 times [2021-02-19 20:39:35,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:35,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123781941] [2021-02-19 20:39:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:35,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123781941] [2021-02-19 20:39:35,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:35,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:35,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804282137] [2021-02-19 20:39:35,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:35,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:35,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:35,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:35,917 INFO L87 Difference]: Start difference. First operand 3394 states and 11403 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) [2021-02-19 20:39:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:37,592 INFO L93 Difference]: Finished difference Result 3972 states and 13056 transitions. [2021-02-19 20:39:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:39:37,593 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 [2021-02-19 20:39:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:37,603 INFO L225 Difference]: With dead ends: 3972 [2021-02-19 20:39:37,603 INFO L226 Difference]: Without dead ends: 3929 [2021-02-19 20:39:37,604 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-02-19 20:39:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-02-19 20:39:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3402. [2021-02-19 20:39:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.358718024110556) internal successors, (11423), 3401 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11423 transitions. [2021-02-19 20:39:37,657 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11423 transitions. Word has length 39 [2021-02-19 20:39:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:37,657 INFO L480 AbstractCegarLoop]: Abstraction has 3402 states and 11423 transitions. [2021-02-19 20:39:37,657 INFO L481 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) [2021-02-19 20:39:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11423 transitions. [2021-02-19 20:39:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:37,661 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:37,661 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:37,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-19 20:39:37,662 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1545908342, now seen corresponding path program 28 times [2021-02-19 20:39:37,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:37,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115322821] [2021-02-19 20:39:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:37,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115322821] [2021-02-19 20:39:37,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:37,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:37,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688356737] [2021-02-19 20:39:37,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:37,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:37,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:37,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:37,868 INFO L87 Difference]: Start difference. First operand 3402 states and 11423 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) [2021-02-19 20:39:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:39,335 INFO L93 Difference]: Finished difference Result 3960 states and 13018 transitions. [2021-02-19 20:39:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 20:39:39,342 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 [2021-02-19 20:39:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:39,352 INFO L225 Difference]: With dead ends: 3960 [2021-02-19 20:39:39,352 INFO L226 Difference]: Without dead ends: 3908 [2021-02-19 20:39:39,353 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:39:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-02-19 20:39:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3396. [2021-02-19 20:39:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.360235640648012) internal successors, (11408), 3395 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11408 transitions. [2021-02-19 20:39:39,407 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11408 transitions. Word has length 39 [2021-02-19 20:39:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:39,408 INFO L480 AbstractCegarLoop]: Abstraction has 3396 states and 11408 transitions. [2021-02-19 20:39:39,408 INFO L481 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) [2021-02-19 20:39:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11408 transitions. [2021-02-19 20:39:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:39,412 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:39,413 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:39,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-02-19 20:39:39,413 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1153173530, now seen corresponding path program 29 times [2021-02-19 20:39:39,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:39,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090589483] [2021-02-19 20:39:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:39,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090589483] [2021-02-19 20:39:39,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:39,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:39,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023960158] [2021-02-19 20:39:39,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:39,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:39,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:39,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:39,665 INFO L87 Difference]: Start difference. First operand 3396 states and 11408 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) [2021-02-19 20:39:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:41,021 INFO L93 Difference]: Finished difference Result 3933 states and 12929 transitions. [2021-02-19 20:39:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:39:41,022 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 [2021-02-19 20:39:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:41,031 INFO L225 Difference]: With dead ends: 3933 [2021-02-19 20:39:41,031 INFO L226 Difference]: Without dead ends: 3878 [2021-02-19 20:39:41,031 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:39:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-02-19 20:39:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3396. [2021-02-19 20:39:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3596465390279824) internal successors, (11406), 3395 states have internal predecessors, (11406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11406 transitions. [2021-02-19 20:39:41,089 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11406 transitions. Word has length 39 [2021-02-19 20:39:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:41,090 INFO L480 AbstractCegarLoop]: Abstraction has 3396 states and 11406 transitions. [2021-02-19 20:39:41,090 INFO L481 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) [2021-02-19 20:39:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11406 transitions. [2021-02-19 20:39:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:41,097 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:41,097 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:41,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-02-19 20:39:41,098 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1969141544, now seen corresponding path program 30 times [2021-02-19 20:39:41,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:41,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012778342] [2021-02-19 20:39:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:41,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012778342] [2021-02-19 20:39:41,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:41,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:41,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724430887] [2021-02-19 20:39:41,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:41,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:41,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:41,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:41,345 INFO L87 Difference]: Start difference. First operand 3396 states and 11406 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) [2021-02-19 20:39:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:42,514 INFO L93 Difference]: Finished difference Result 3868 states and 12777 transitions. [2021-02-19 20:39:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:39:42,514 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 [2021-02-19 20:39:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:42,524 INFO L225 Difference]: With dead ends: 3868 [2021-02-19 20:39:42,524 INFO L226 Difference]: Without dead ends: 3822 [2021-02-19 20:39:42,525 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:39:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2021-02-19 20:39:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3400. [2021-02-19 20:39:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.3580464842600763) internal successors, (11414), 3399 states have internal predecessors, (11414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11414 transitions. [2021-02-19 20:39:42,584 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11414 transitions. Word has length 39 [2021-02-19 20:39:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:42,584 INFO L480 AbstractCegarLoop]: Abstraction has 3400 states and 11414 transitions. [2021-02-19 20:39:42,584 INFO L481 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) [2021-02-19 20:39:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11414 transitions. [2021-02-19 20:39:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:42,589 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:42,589 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:42,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-02-19 20:39:42,589 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:42,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2078359590, now seen corresponding path program 31 times [2021-02-19 20:39:42,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:42,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518640688] [2021-02-19 20:39:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518640688] [2021-02-19 20:39:42,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:42,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50634045] [2021-02-19 20:39:42,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:42,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:42,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:42,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:42,802 INFO L87 Difference]: Start difference. First operand 3400 states and 11414 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:44,096 INFO L93 Difference]: Finished difference Result 3840 states and 12726 transitions. [2021-02-19 20:39:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:39:44,097 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 [2021-02-19 20:39:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:44,108 INFO L225 Difference]: With dead ends: 3840 [2021-02-19 20:39:44,108 INFO L226 Difference]: Without dead ends: 3791 [2021-02-19 20:39:44,108 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:39:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-02-19 20:39:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3390. [2021-02-19 20:39:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 3.361758630864562) internal successors, (11393), 3389 states have internal predecessors, (11393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 11393 transitions. [2021-02-19 20:39:44,184 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 11393 transitions. Word has length 39 [2021-02-19 20:39:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:44,185 INFO L480 AbstractCegarLoop]: Abstraction has 3390 states and 11393 transitions. [2021-02-19 20:39:44,185 INFO L481 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) [2021-02-19 20:39:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 11393 transitions. [2021-02-19 20:39:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:44,191 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:44,191 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:44,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-02-19 20:39:44,192 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1513221530, now seen corresponding path program 32 times [2021-02-19 20:39:44,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:44,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675083670] [2021-02-19 20:39:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:44,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675083670] [2021-02-19 20:39:44,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:44,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:44,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905847805] [2021-02-19 20:39:44,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:44,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:44,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:44,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:44,469 INFO L87 Difference]: Start difference. First operand 3390 states and 11393 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) [2021-02-19 20:39:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:45,629 INFO L93 Difference]: Finished difference Result 3789 states and 12635 transitions. [2021-02-19 20:39:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-19 20:39:45,630 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 [2021-02-19 20:39:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:45,639 INFO L225 Difference]: With dead ends: 3789 [2021-02-19 20:39:45,639 INFO L226 Difference]: Without dead ends: 3722 [2021-02-19 20:39:45,640 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-02-19 20:39:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2021-02-19 20:39:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3430. [2021-02-19 20:39:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3429 states have (on average 3.3540390784485274) internal successors, (11501), 3429 states have internal predecessors, (11501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 11501 transitions. [2021-02-19 20:39:45,696 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 11501 transitions. Word has length 39 [2021-02-19 20:39:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:45,696 INFO L480 AbstractCegarLoop]: Abstraction has 3430 states and 11501 transitions. [2021-02-19 20:39:45,696 INFO L481 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) [2021-02-19 20:39:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 11501 transitions. [2021-02-19 20:39:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:45,701 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:45,701 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:45,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-02-19 20:39:45,701 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1685364748, now seen corresponding path program 33 times [2021-02-19 20:39:45,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:45,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917549489] [2021-02-19 20:39:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:45,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917549489] [2021-02-19 20:39:45,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:45,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:45,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688225743] [2021-02-19 20:39:45,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:45,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:45,937 INFO L87 Difference]: Start difference. First operand 3430 states and 11501 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) [2021-02-19 20:39:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:47,027 INFO L93 Difference]: Finished difference Result 3777 states and 12595 transitions. [2021-02-19 20:39:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 20:39:47,027 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 [2021-02-19 20:39:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:47,036 INFO L225 Difference]: With dead ends: 3777 [2021-02-19 20:39:47,036 INFO L226 Difference]: Without dead ends: 3714 [2021-02-19 20:39:47,037 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:39:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-02-19 20:39:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3422. [2021-02-19 20:39:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3421 states have (on average 3.3548669979538146) internal successors, (11477), 3421 states have internal predecessors, (11477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 11477 transitions. [2021-02-19 20:39:47,100 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 11477 transitions. Word has length 39 [2021-02-19 20:39:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:47,100 INFO L480 AbstractCegarLoop]: Abstraction has 3422 states and 11477 transitions. [2021-02-19 20:39:47,100 INFO L481 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) [2021-02-19 20:39:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 11477 transitions. [2021-02-19 20:39:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:47,106 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:47,106 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:47,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-02-19 20:39:47,106 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:47,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:47,107 INFO L82 PathProgramCache]: Analyzing trace with hash 806768392, now seen corresponding path program 34 times [2021-02-19 20:39:47,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:47,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290350390] [2021-02-19 20:39:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:47,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290350390] [2021-02-19 20:39:47,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:47,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:47,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757265560] [2021-02-19 20:39:47,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:47,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:47,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:47,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:47,356 INFO L87 Difference]: Start difference. First operand 3422 states and 11477 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) [2021-02-19 20:39:48,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:48,462 INFO L93 Difference]: Finished difference Result 3789 states and 12623 transitions. [2021-02-19 20:39:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 20:39:48,463 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 [2021-02-19 20:39:48,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:48,473 INFO L225 Difference]: With dead ends: 3789 [2021-02-19 20:39:48,473 INFO L226 Difference]: Without dead ends: 3666 [2021-02-19 20:39:48,473 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-02-19 20:39:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-02-19 20:39:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3390. [2021-02-19 20:39:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 3.3570374741811744) internal successors, (11377), 3389 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 11377 transitions. [2021-02-19 20:39:48,548 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 11377 transitions. Word has length 39 [2021-02-19 20:39:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:48,548 INFO L480 AbstractCegarLoop]: Abstraction has 3390 states and 11377 transitions. [2021-02-19 20:39:48,548 INFO L481 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) [2021-02-19 20:39:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 11377 transitions. [2021-02-19 20:39:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:48,555 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:48,555 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:48,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-02-19 20:39:48,555 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:48,556 INFO L82 PathProgramCache]: Analyzing trace with hash -2056638650, now seen corresponding path program 35 times [2021-02-19 20:39:48,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:48,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619190572] [2021-02-19 20:39:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:48,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619190572] [2021-02-19 20:39:48,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:48,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:48,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218432930] [2021-02-19 20:39:48,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:48,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:48,781 INFO L87 Difference]: Start difference. First operand 3390 states and 11377 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) [2021-02-19 20:39:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:50,770 INFO L93 Difference]: Finished difference Result 5596 states and 19001 transitions. [2021-02-19 20:39:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-19 20:39:50,773 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 [2021-02-19 20:39:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:50,787 INFO L225 Difference]: With dead ends: 5596 [2021-02-19 20:39:50,787 INFO L226 Difference]: Without dead ends: 5553 [2021-02-19 20:39:50,788 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-02-19 20:39:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2021-02-19 20:39:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 3484. [2021-02-19 20:39:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3483 states have (on average 3.3545793855871375) internal successors, (11684), 3483 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 11684 transitions. [2021-02-19 20:39:50,857 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 11684 transitions. Word has length 39 [2021-02-19 20:39:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:50,857 INFO L480 AbstractCegarLoop]: Abstraction has 3484 states and 11684 transitions. [2021-02-19 20:39:50,857 INFO L481 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) [2021-02-19 20:39:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 11684 transitions. [2021-02-19 20:39:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:50,862 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:50,862 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:50,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-02-19 20:39:50,862 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash 457730344, now seen corresponding path program 36 times [2021-02-19 20:39:50,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:50,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333134168] [2021-02-19 20:39:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:51,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333134168] [2021-02-19 20:39:51,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:51,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:51,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781522555] [2021-02-19 20:39:51,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:51,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:51,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:51,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:51,124 INFO L87 Difference]: Start difference. First operand 3484 states and 11684 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) [2021-02-19 20:39:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:53,432 INFO L93 Difference]: Finished difference Result 6457 states and 21931 transitions. [2021-02-19 20:39:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-02-19 20:39:53,432 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 [2021-02-19 20:39:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:53,450 INFO L225 Difference]: With dead ends: 6457 [2021-02-19 20:39:53,450 INFO L226 Difference]: Without dead ends: 6405 [2021-02-19 20:39:53,451 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-02-19 20:39:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-02-19 20:39:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 3478. [2021-02-19 20:39:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 3.35605406960023) internal successors, (11669), 3477 states have internal predecessors, (11669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 11669 transitions. [2021-02-19 20:39:53,525 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 11669 transitions. Word has length 39 [2021-02-19 20:39:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:53,525 INFO L480 AbstractCegarLoop]: Abstraction has 3478 states and 11669 transitions. [2021-02-19 20:39:53,525 INFO L481 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) [2021-02-19 20:39:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 11669 transitions. [2021-02-19 20:39:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:53,530 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:53,530 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:53,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-02-19 20:39:53,531 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1138155080, now seen corresponding path program 37 times [2021-02-19 20:39:53,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:53,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752758086] [2021-02-19 20:39:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:53,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752758086] [2021-02-19 20:39:53,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:53,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:53,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756682968] [2021-02-19 20:39:53,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:53,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:53,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:53,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:53,788 INFO L87 Difference]: Start difference. First operand 3478 states and 11669 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:55,466 INFO L93 Difference]: Finished difference Result 5485 states and 18455 transitions. [2021-02-19 20:39:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:39:55,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:39:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:55,481 INFO L225 Difference]: With dead ends: 5485 [2021-02-19 20:39:55,481 INFO L226 Difference]: Without dead ends: 5430 [2021-02-19 20:39:55,482 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:39:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2021-02-19 20:39:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 3562. [2021-02-19 20:39:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:55,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-02-19 20:39:55,549 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-02-19 20:39:55,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:55,549 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-02-19 20:39:55,549 INFO L481 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) [2021-02-19 20:39:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-02-19 20:39:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:55,555 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:55,555 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:55,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-02-19 20:39:55,555 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash 34497142, now seen corresponding path program 38 times [2021-02-19 20:39:55,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:55,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51449024] [2021-02-19 20:39:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:55,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51449024] [2021-02-19 20:39:55,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:55,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:55,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660600124] [2021-02-19 20:39:55,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:55,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:55,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:55,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:55,806 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:57,838 INFO L93 Difference]: Finished difference Result 6346 states and 21389 transitions. [2021-02-19 20:39:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-19 20:39:57,839 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 [2021-02-19 20:39:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:57,855 INFO L225 Difference]: With dead ends: 6346 [2021-02-19 20:39:57,855 INFO L226 Difference]: Without dead ends: 6286 [2021-02-19 20:39:57,856 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:39:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-02-19 20:39:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 3560. [2021-02-19 20:39:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3554369204832817) internal successors, (11942), 3559 states have internal predecessors, (11942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11942 transitions. [2021-02-19 20:39:57,931 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11942 transitions. Word has length 39 [2021-02-19 20:39:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:57,931 INFO L480 AbstractCegarLoop]: Abstraction has 3560 states and 11942 transitions. [2021-02-19 20:39:57,931 INFO L481 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) [2021-02-19 20:39:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11942 transitions. [2021-02-19 20:39:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:57,935 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:57,935 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:57,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-02-19 20:39:57,936 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1842906460, now seen corresponding path program 39 times [2021-02-19 20:39:57,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:57,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956116466] [2021-02-19 20:39:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:58,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956116466] [2021-02-19 20:39:58,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:58,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:58,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984268283] [2021-02-19 20:39:58,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:58,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:58,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:58,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:58,150 INFO L87 Difference]: Start difference. First operand 3560 states and 11942 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) [2021-02-19 20:39:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:39:59,651 INFO L93 Difference]: Finished difference Result 5424 states and 18314 transitions. [2021-02-19 20:39:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:39:59,651 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 [2021-02-19 20:39:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:39:59,665 INFO L225 Difference]: With dead ends: 5424 [2021-02-19 20:39:59,665 INFO L226 Difference]: Without dead ends: 5333 [2021-02-19 20:39:59,666 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:39:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2021-02-19 20:39:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 3560. [2021-02-19 20:39:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:39:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-02-19 20:39:59,733 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-02-19 20:39:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:39:59,733 INFO L480 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-02-19 20:39:59,733 INFO L481 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) [2021-02-19 20:39:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-02-19 20:39:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:39:59,738 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:39:59,739 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:39:59,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-02-19 20:39:59,739 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:39:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:39:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 949578630, now seen corresponding path program 40 times [2021-02-19 20:39:59,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:39:59,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773558567] [2021-02-19 20:39:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:39:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:39:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:39:59,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773558567] [2021-02-19 20:39:59,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:39:59,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:39:59,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855074804] [2021-02-19 20:39:59,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:39:59,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:39:59,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:39:59,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:39:59,964 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 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) [2021-02-19 20:40:01,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:01,766 INFO L93 Difference]: Finished difference Result 6237 states and 21116 transitions. [2021-02-19 20:40:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:40:01,767 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 [2021-02-19 20:40:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:01,781 INFO L225 Difference]: With dead ends: 6237 [2021-02-19 20:40:01,782 INFO L226 Difference]: Without dead ends: 6121 [2021-02-19 20:40:01,782 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:40:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2021-02-19 20:40:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 3538. [2021-02-19 20:40:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.3551031947978514) internal successors, (11867), 3537 states have internal predecessors, (11867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-02-19 20:40:01,851 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-02-19 20:40:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:01,852 INFO L480 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-02-19 20:40:01,852 INFO L481 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) [2021-02-19 20:40:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-02-19 20:40:01,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:01,857 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:01,857 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:01,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-02-19 20:40:01,857 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1686296646, now seen corresponding path program 41 times [2021-02-19 20:40:01,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:01,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833151709] [2021-02-19 20:40:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:02,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833151709] [2021-02-19 20:40:02,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:02,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:02,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549626553] [2021-02-19 20:40:02,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:02,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:02,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:02,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:02,118 INFO L87 Difference]: Start difference. First operand 3538 states and 11867 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:03,578 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-02-19 20:40:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:40:03,578 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 [2021-02-19 20:40:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:03,588 INFO L225 Difference]: With dead ends: 3974 [2021-02-19 20:40:03,588 INFO L226 Difference]: Without dead ends: 3868 [2021-02-19 20:40:03,589 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:40:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-02-19 20:40:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-02-19 20:40:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-02-19 20:40:03,646 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-02-19 20:40:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:03,646 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-02-19 20:40:03,647 INFO L481 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) [2021-02-19 20:40:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-02-19 20:40:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:03,652 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:03,653 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:03,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-02-19 20:40:03,653 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash 191405746, now seen corresponding path program 42 times [2021-02-19 20:40:03,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:03,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3341702] [2021-02-19 20:40:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:03,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3341702] [2021-02-19 20:40:03,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:03,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:03,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304207303] [2021-02-19 20:40:03,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:03,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:03,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:03,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:03,876 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:05,349 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-02-19 20:40:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-19 20:40:05,350 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 [2021-02-19 20:40:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:05,361 INFO L225 Difference]: With dead ends: 4043 [2021-02-19 20:40:05,361 INFO L226 Difference]: Without dead ends: 3979 [2021-02-19 20:40:05,362 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:40:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-02-19 20:40:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-02-19 20:40:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-02-19 20:40:05,422 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-02-19 20:40:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:05,423 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-02-19 20:40:05,423 INFO L481 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) [2021-02-19 20:40:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-02-19 20:40:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:05,428 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:05,428 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:05,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-02-19 20:40:05,428 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:05,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1109889316, now seen corresponding path program 43 times [2021-02-19 20:40:05,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:05,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452794368] [2021-02-19 20:40:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:05,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452794368] [2021-02-19 20:40:05,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:05,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:05,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098915622] [2021-02-19 20:40:05,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:05,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:05,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:05,652 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:06,747 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-02-19 20:40:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-19 20:40:06,748 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 [2021-02-19 20:40:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:06,759 INFO L225 Difference]: With dead ends: 3940 [2021-02-19 20:40:06,759 INFO L226 Difference]: Without dead ends: 3897 [2021-02-19 20:40:06,760 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:40:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-02-19 20:40:06,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-02-19 20:40:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.352627142455746) internal successors, (11932), 3559 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-02-19 20:40:06,818 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-02-19 20:40:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:06,818 INFO L480 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-02-19 20:40:06,819 INFO L481 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) [2021-02-19 20:40:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-02-19 20:40:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:06,825 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:06,825 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:06,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-02-19 20:40:06,825 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1130038050, now seen corresponding path program 44 times [2021-02-19 20:40:06,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:06,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766847650] [2021-02-19 20:40:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:07,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766847650] [2021-02-19 20:40:07,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:07,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:07,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580134389] [2021-02-19 20:40:07,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:07,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:07,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:07,082 INFO L87 Difference]: Start difference. First operand 3560 states and 11932 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:08,298 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-02-19 20:40:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:40:08,299 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 [2021-02-19 20:40:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:08,310 INFO L225 Difference]: With dead ends: 3897 [2021-02-19 20:40:08,310 INFO L226 Difference]: Without dead ends: 3854 [2021-02-19 20:40:08,311 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:40:08,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-02-19 20:40:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-02-19 20:40:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.353586497890295) internal successors, (11922), 3555 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-02-19 20:40:08,371 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-02-19 20:40:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:08,371 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-02-19 20:40:08,371 INFO L481 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) [2021-02-19 20:40:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-02-19 20:40:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:08,377 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:08,377 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:08,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-02-19 20:40:08,377 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2012425758, now seen corresponding path program 45 times [2021-02-19 20:40:08,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:08,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549232077] [2021-02-19 20:40:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:08,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549232077] [2021-02-19 20:40:08,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:08,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:08,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489866794] [2021-02-19 20:40:08,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:08,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:08,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:08,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:08,607 INFO L87 Difference]: Start difference. First operand 3556 states and 11922 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:09,743 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-02-19 20:40:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:40:09,744 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 [2021-02-19 20:40:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:09,755 INFO L225 Difference]: With dead ends: 3918 [2021-02-19 20:40:09,755 INFO L226 Difference]: Without dead ends: 3858 [2021-02-19 20:40:09,756 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:40:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-02-19 20:40:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-02-19 20:40:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.354066985645933) internal successors, (11917), 3553 states have internal predecessors, (11917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-02-19 20:40:09,832 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-02-19 20:40:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:09,832 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-02-19 20:40:09,832 INFO L481 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) [2021-02-19 20:40:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-02-19 20:40:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:09,838 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:09,838 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:09,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-02-19 20:40:09,838 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:09,839 INFO L82 PathProgramCache]: Analyzing trace with hash 202974996, now seen corresponding path program 46 times [2021-02-19 20:40:09,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:09,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15232256] [2021-02-19 20:40:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:10,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15232256] [2021-02-19 20:40:10,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:10,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:40:10,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451801036] [2021-02-19 20:40:10,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:40:10,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:10,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:40:10,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:40:10,041 INFO L87 Difference]: Start difference. First operand 3554 states and 11917 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:11,023 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-02-19 20:40:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 20:40:11,024 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 [2021-02-19 20:40:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:11,035 INFO L225 Difference]: With dead ends: 3886 [2021-02-19 20:40:11,035 INFO L226 Difference]: Without dead ends: 3810 [2021-02-19 20:40:11,035 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-02-19 20:40:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-02-19 20:40:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-02-19 20:40:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-02-19 20:40:11,098 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-02-19 20:40:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:11,098 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-02-19 20:40:11,098 INFO L481 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) [2021-02-19 20:40:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-02-19 20:40:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:11,103 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:11,103 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:11,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-02-19 20:40:11,104 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:11,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash -815078616, now seen corresponding path program 47 times [2021-02-19 20:40:11,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:11,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358142523] [2021-02-19 20:40:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:11,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358142523] [2021-02-19 20:40:11,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:11,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:11,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307165010] [2021-02-19 20:40:11,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:11,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:11,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:11,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:11,369 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:12,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:12,567 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-02-19 20:40:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-19 20:40:12,567 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 [2021-02-19 20:40:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:12,578 INFO L225 Difference]: With dead ends: 3868 [2021-02-19 20:40:12,578 INFO L226 Difference]: Without dead ends: 3798 [2021-02-19 20:40:12,578 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 20:40:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-02-19 20:40:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-02-19 20:40:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.354466046773739) internal successors, (11905), 3549 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-02-19 20:40:12,637 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-02-19 20:40:12,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:12,637 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-02-19 20:40:12,637 INFO L481 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) [2021-02-19 20:40:12,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-02-19 20:40:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:12,643 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:12,643 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:12,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-02-19 20:40:12,643 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:12,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:12,644 INFO L82 PathProgramCache]: Analyzing trace with hash 31105064, now seen corresponding path program 48 times [2021-02-19 20:40:12,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:12,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218526307] [2021-02-19 20:40:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:12,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218526307] [2021-02-19 20:40:12,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804197648] [2021-02-19 20:40:12,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:12,895 INFO L87 Difference]: Start difference. First operand 3550 states and 11905 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:14,945 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-02-19 20:40:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-19 20:40:14,946 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 [2021-02-19 20:40:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:14,962 INFO L225 Difference]: With dead ends: 5576 [2021-02-19 20:40:14,963 INFO L226 Difference]: Without dead ends: 5533 [2021-02-19 20:40:14,964 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-02-19 20:40:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-02-19 20:40:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-02-19 20:40:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3575 states have (on average 3.3532867132867135) internal successors, (11988), 3575 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-02-19 20:40:15,042 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-02-19 20:40:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:15,042 INFO L480 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-02-19 20:40:15,042 INFO L481 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) [2021-02-19 20:40:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-02-19 20:40:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:15,048 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:15,048 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:15,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-02-19 20:40:15,048 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1749493238, now seen corresponding path program 49 times [2021-02-19 20:40:15,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:15,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648009482] [2021-02-19 20:40:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:15,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648009482] [2021-02-19 20:40:15,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:15,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:15,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467839426] [2021-02-19 20:40:15,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:15,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:15,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:15,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:15,309 INFO L87 Difference]: Start difference. First operand 3576 states and 11988 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:17,726 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-02-19 20:40:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-02-19 20:40:17,726 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 [2021-02-19 20:40:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:17,743 INFO L225 Difference]: With dead ends: 6437 [2021-02-19 20:40:17,743 INFO L226 Difference]: Without dead ends: 6385 [2021-02-19 20:40:17,744 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-02-19 20:40:17,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-02-19 20:40:17,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-02-19 20:40:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-02-19 20:40:17,818 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-02-19 20:40:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:17,818 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-02-19 20:40:17,819 INFO L481 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) [2021-02-19 20:40:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-02-19 20:40:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:17,824 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:17,824 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:17,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-02-19 20:40:17,825 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:17,825 INFO L82 PathProgramCache]: Analyzing trace with hash 949588634, now seen corresponding path program 50 times [2021-02-19 20:40:17,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:17,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569536794] [2021-02-19 20:40:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:18,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569536794] [2021-02-19 20:40:18,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:18,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:18,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456690232] [2021-02-19 20:40:18,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:18,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:18,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:18,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:18,066 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:19,654 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-02-19 20:40:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-19 20:40:19,655 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 [2021-02-19 20:40:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:19,669 INFO L225 Difference]: With dead ends: 5393 [2021-02-19 20:40:19,669 INFO L226 Difference]: Without dead ends: 5338 [2021-02-19 20:40:19,670 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-02-19 20:40:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-02-19 20:40:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-02-19 20:40:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3546495392348508) internal successors, (12013), 3581 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-02-19 20:40:19,738 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-02-19 20:40:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:19,738 INFO L480 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-02-19 20:40:19,738 INFO L481 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) [2021-02-19 20:40:19,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-02-19 20:40:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:19,744 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:19,744 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:19,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-02-19 20:40:19,745 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:19,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2122240856, now seen corresponding path program 51 times [2021-02-19 20:40:19,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:19,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563991154] [2021-02-19 20:40:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:19,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563991154] [2021-02-19 20:40:19,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:19,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:19,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238182921] [2021-02-19 20:40:19,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:19,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:19,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:19,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:19,977 INFO L87 Difference]: Start difference. First operand 3582 states and 12013 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:22,042 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-02-19 20:40:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-19 20:40:22,043 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 [2021-02-19 20:40:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:22,060 INFO L225 Difference]: With dead ends: 6254 [2021-02-19 20:40:22,060 INFO L226 Difference]: Without dead ends: 6194 [2021-02-19 20:40:22,061 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:40:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-02-19 20:40:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-02-19 20:40:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.355127130483375) internal successors, (12008), 3579 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-02-19 20:40:22,133 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-02-19 20:40:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:22,133 INFO L480 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-02-19 20:40:22,133 INFO L481 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) [2021-02-19 20:40:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-02-19 20:40:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:22,139 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:22,140 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:22,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-02-19 20:40:22,140 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash 244837254, now seen corresponding path program 52 times [2021-02-19 20:40:22,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:22,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341399394] [2021-02-19 20:40:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:22,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341399394] [2021-02-19 20:40:22,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:22,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:22,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166698417] [2021-02-19 20:40:22,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:22,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:22,362 INFO L87 Difference]: Start difference. First operand 3580 states and 12008 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:23,827 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-02-19 20:40:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:40:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:23,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:23,842 INFO L225 Difference]: With dead ends: 5284 [2021-02-19 20:40:23,842 INFO L226 Difference]: Without dead ends: 5193 [2021-02-19 20:40:23,843 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:40:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-02-19 20:40:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-02-19 20:40:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.353450684548757) internal successors, (12002), 3579 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-02-19 20:40:23,911 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-02-19 20:40:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:23,911 INFO L480 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-02-19 20:40:23,911 INFO L481 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) [2021-02-19 20:40:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-02-19 20:40:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:23,916 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:23,917 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:23,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-02-19 20:40:23,917 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1257644952, now seen corresponding path program 53 times [2021-02-19 20:40:23,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:23,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14862370] [2021-02-19 20:40:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:24,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14862370] [2021-02-19 20:40:24,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:24,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:24,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515380911] [2021-02-19 20:40:24,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:24,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:24,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:24,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:24,163 INFO L87 Difference]: Start difference. First operand 3580 states and 12002 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:25,981 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-02-19 20:40:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:40:25,982 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 [2021-02-19 20:40:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:26,000 INFO L225 Difference]: With dead ends: 6116 [2021-02-19 20:40:26,000 INFO L226 Difference]: Without dead ends: 6016 [2021-02-19 20:40:26,001 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:40:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-02-19 20:40:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-02-19 20:40:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.352085082563672) internal successors, (11977), 3573 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-02-19 20:40:26,075 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-02-19 20:40:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:26,075 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-02-19 20:40:26,075 INFO L481 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) [2021-02-19 20:40:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-02-19 20:40:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:26,080 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:26,080 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:26,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-02-19 20:40:26,080 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1494269948, now seen corresponding path program 54 times [2021-02-19 20:40:26,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:26,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250040679] [2021-02-19 20:40:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:26,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250040679] [2021-02-19 20:40:26,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:26,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:40:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732782572] [2021-02-19 20:40:26,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:40:26,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:26,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:40:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:40:26,319 INFO L87 Difference]: Start difference. First operand 3574 states and 11977 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:27,246 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-02-19 20:40:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-19 20:40:27,246 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 [2021-02-19 20:40:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:27,257 INFO L225 Difference]: With dead ends: 3841 [2021-02-19 20:40:27,257 INFO L226 Difference]: Without dead ends: 3765 [2021-02-19 20:40:27,257 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-02-19 20:40:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-02-19 20:40:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-02-19 20:40:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3467406380027738) internal successors, (12065), 3605 states have internal predecessors, (12065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-02-19 20:40:27,316 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-02-19 20:40:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:27,316 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-02-19 20:40:27,316 INFO L481 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) [2021-02-19 20:40:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-02-19 20:40:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:27,323 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:27,323 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:27,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-02-19 20:40:27,323 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1782643736, now seen corresponding path program 55 times [2021-02-19 20:40:27,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:27,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138209449] [2021-02-19 20:40:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:27,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138209449] [2021-02-19 20:40:27,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:27,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:27,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496103385] [2021-02-19 20:40:27,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:27,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:27,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:27,555 INFO L87 Difference]: Start difference. First operand 3606 states and 12065 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:28,605 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-02-19 20:40:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-19 20:40:28,605 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 [2021-02-19 20:40:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:28,616 INFO L225 Difference]: With dead ends: 3823 [2021-02-19 20:40:28,616 INFO L226 Difference]: Without dead ends: 3757 [2021-02-19 20:40:28,616 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:40:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-02-19 20:40:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-02-19 20:40:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.347511815401724) internal successors, (12041), 3597 states have internal predecessors, (12041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-02-19 20:40:28,684 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-02-19 20:40:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:28,684 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-02-19 20:40:28,684 INFO L481 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) [2021-02-19 20:40:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-02-19 20:40:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:28,690 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:28,690 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:28,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-02-19 20:40:28,690 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:28,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1500378082, now seen corresponding path program 56 times [2021-02-19 20:40:28,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:28,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811965153] [2021-02-19 20:40:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:28,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811965153] [2021-02-19 20:40:28,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:28,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:40:28,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382063757] [2021-02-19 20:40:28,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:40:28,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:28,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:40:28,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:40:28,918 INFO L87 Difference]: Start difference. First operand 3598 states and 12041 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:29,961 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-02-19 20:40:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-19 20:40:29,962 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 [2021-02-19 20:40:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:29,973 INFO L225 Difference]: With dead ends: 3832 [2021-02-19 20:40:29,973 INFO L226 Difference]: Without dead ends: 3670 [2021-02-19 20:40:29,973 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:40:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-02-19 20:40:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-02-19 20:40:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 3.3587418532162086) internal successors, (11853), 3529 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-02-19 20:40:30,033 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-02-19 20:40:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:30,033 INFO L480 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-02-19 20:40:30,033 INFO L481 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) [2021-02-19 20:40:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-02-19 20:40:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:30,039 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:30,039 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:30,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-02-19 20:40:30,039 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:30,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:30,040 INFO L82 PathProgramCache]: Analyzing trace with hash -673304842, now seen corresponding path program 57 times [2021-02-19 20:40:30,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:30,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512262800] [2021-02-19 20:40:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:30,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512262800] [2021-02-19 20:40:30,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:30,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:30,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953562922] [2021-02-19 20:40:30,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:30,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:30,305 INFO L87 Difference]: Start difference. First operand 3530 states and 11853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:31,724 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-02-19 20:40:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:40:31,724 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 [2021-02-19 20:40:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:31,736 INFO L225 Difference]: With dead ends: 3963 [2021-02-19 20:40:31,736 INFO L226 Difference]: Without dead ends: 3896 [2021-02-19 20:40:31,737 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:40:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-02-19 20:40:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-02-19 20:40:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 3.3545582047685834) internal successors, (11959), 3565 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-02-19 20:40:31,803 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-02-19 20:40:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:31,803 INFO L480 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-02-19 20:40:31,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-02-19 20:40:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:31,809 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:31,809 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:31,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-02-19 20:40:31,810 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:31,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1739248372, now seen corresponding path program 58 times [2021-02-19 20:40:31,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:31,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913666387] [2021-02-19 20:40:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:32,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913666387] [2021-02-19 20:40:32,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:32,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:32,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386264890] [2021-02-19 20:40:32,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:32,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:32,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:32,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:32,076 INFO L87 Difference]: Start difference. First operand 3566 states and 11959 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:33,864 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-02-19 20:40:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-02-19 20:40:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:33,875 INFO L225 Difference]: With dead ends: 4048 [2021-02-19 20:40:33,875 INFO L226 Difference]: Without dead ends: 4005 [2021-02-19 20:40:33,876 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:40:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-02-19 20:40:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-02-19 20:40:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 3.352562307476897) internal successors, (11972), 3571 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-02-19 20:40:33,935 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-02-19 20:40:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:33,935 INFO L480 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-02-19 20:40:33,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-02-19 20:40:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:33,940 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:33,940 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:33,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-02-19 20:40:33,940 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:33,941 INFO L82 PathProgramCache]: Analyzing trace with hash -41349930, now seen corresponding path program 59 times [2021-02-19 20:40:33,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:33,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990008459] [2021-02-19 20:40:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:34,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990008459] [2021-02-19 20:40:34,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:34,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:34,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993133582] [2021-02-19 20:40:34,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:34,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:34,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:34,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:34,230 INFO L87 Difference]: Start difference. First operand 3572 states and 11972 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:36,002 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-02-19 20:40:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:40:36,003 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:36,012 INFO L225 Difference]: With dead ends: 4003 [2021-02-19 20:40:36,012 INFO L226 Difference]: Without dead ends: 3939 [2021-02-19 20:40:36,012 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:40:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-02-19 20:40:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-02-19 20:40:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3574444131719674) internal successors, (11929), 3553 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-02-19 20:40:36,067 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-02-19 20:40:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:36,067 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-02-19 20:40:36,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-02-19 20:40:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:36,074 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:36,074 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:36,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-02-19 20:40:36,074 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1521110248, now seen corresponding path program 60 times [2021-02-19 20:40:36,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:36,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021487955] [2021-02-19 20:40:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:36,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021487955] [2021-02-19 20:40:36,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:36,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:36,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623654199] [2021-02-19 20:40:36,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:36,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:36,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:36,355 INFO L87 Difference]: Start difference. First operand 3554 states and 11929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:37,736 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-02-19 20:40:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:40:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:37,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:37,748 INFO L225 Difference]: With dead ends: 3963 [2021-02-19 20:40:37,748 INFO L226 Difference]: Without dead ends: 3896 [2021-02-19 20:40:37,748 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:40:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-02-19 20:40:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-02-19 20:40:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-02-19 20:40:37,808 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-02-19 20:40:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:37,808 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-02-19 20:40:37,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-02-19 20:40:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:37,814 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:37,814 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:37,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-02-19 20:40:37,814 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1348967030, now seen corresponding path program 61 times [2021-02-19 20:40:37,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:37,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994449857] [2021-02-19 20:40:37,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:38,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994449857] [2021-02-19 20:40:38,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:38,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:38,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586766818] [2021-02-19 20:40:38,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:38,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:38,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:38,106 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:39,553 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-02-19 20:40:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 20:40:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:39,565 INFO L225 Difference]: With dead ends: 3951 [2021-02-19 20:40:39,565 INFO L226 Difference]: Without dead ends: 3888 [2021-02-19 20:40:39,565 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-02-19 20:40:39,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-02-19 20:40:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-02-19 20:40:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-02-19 20:40:39,624 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-02-19 20:40:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:39,624 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-02-19 20:40:39,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-02-19 20:40:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:39,630 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:39,630 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:39,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-02-19 20:40:39,630 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:39,631 INFO L82 PathProgramCache]: Analyzing trace with hash 312811030, now seen corresponding path program 62 times [2021-02-19 20:40:39,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:39,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893047588] [2021-02-19 20:40:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:39,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893047588] [2021-02-19 20:40:39,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:39,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:39,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347761917] [2021-02-19 20:40:39,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:39,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:39,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:39,901 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:41,807 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-02-19 20:40:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 20:40:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:41,820 INFO L225 Difference]: With dead ends: 4114 [2021-02-19 20:40:41,820 INFO L226 Difference]: Without dead ends: 4071 [2021-02-19 20:40:41,821 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-02-19 20:40:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-02-19 20:40:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-02-19 20:40:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-02-19 20:40:41,893 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-02-19 20:40:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:41,893 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-02-19 20:40:41,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-02-19 20:40:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:41,899 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:41,899 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:41,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-02-19 20:40:41,900 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:41,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:41,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1467787272, now seen corresponding path program 63 times [2021-02-19 20:40:41,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:41,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910652595] [2021-02-19 20:40:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:42,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910652595] [2021-02-19 20:40:42,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:42,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:42,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636998483] [2021-02-19 20:40:42,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:42,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:42,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:42,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:42,170 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:44,037 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-02-19 20:40:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:40:44,038 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:44,050 INFO L225 Difference]: With dead ends: 4102 [2021-02-19 20:40:44,050 INFO L226 Difference]: Without dead ends: 4050 [2021-02-19 20:40:44,051 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:40:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-02-19 20:40:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-02-19 20:40:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-02-19 20:40:44,112 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-02-19 20:40:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:44,112 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-02-19 20:40:44,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-02-19 20:40:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:44,118 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:44,118 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:44,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-02-19 20:40:44,118 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1231294600, now seen corresponding path program 64 times [2021-02-19 20:40:44,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:44,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041791003] [2021-02-19 20:40:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:44,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041791003] [2021-02-19 20:40:44,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:44,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:44,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008720763] [2021-02-19 20:40:44,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:44,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:44,418 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:45,963 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-02-19 20:40:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:40:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:45,975 INFO L225 Difference]: With dead ends: 4079 [2021-02-19 20:40:45,975 INFO L226 Difference]: Without dead ends: 4024 [2021-02-19 20:40:45,976 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:40:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-02-19 20:40:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-02-19 20:40:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.3552742616033755) internal successors, (11928), 3555 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-02-19 20:40:46,042 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-02-19 20:40:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:46,042 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-02-19 20:40:46,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-02-19 20:40:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:46,049 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:46,049 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:46,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-02-19 20:40:46,049 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1891020474, now seen corresponding path program 65 times [2021-02-19 20:40:46,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:46,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932763379] [2021-02-19 20:40:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:46,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932763379] [2021-02-19 20:40:46,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:46,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:46,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195924751] [2021-02-19 20:40:46,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:46,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:46,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:46,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:46,328 INFO L87 Difference]: Start difference. First operand 3556 states and 11928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:47,771 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-02-19 20:40:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:40:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:47,783 INFO L225 Difference]: With dead ends: 4014 [2021-02-19 20:40:47,783 INFO L226 Difference]: Without dead ends: 3968 [2021-02-19 20:40:47,783 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:40:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-02-19 20:40:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-02-19 20:40:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-02-19 20:40:47,843 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-02-19 20:40:47,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:47,843 INFO L480 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-02-19 20:40:47,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-02-19 20:40:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:47,850 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:47,850 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:47,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-02-19 20:40:47,850 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:47,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2138486636, now seen corresponding path program 66 times [2021-02-19 20:40:47,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:47,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464735045] [2021-02-19 20:40:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:48,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464735045] [2021-02-19 20:40:48,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:48,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:48,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953413051] [2021-02-19 20:40:48,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:48,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:48,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:48,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:48,104 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:49,709 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-02-19 20:40:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:40:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:49,721 INFO L225 Difference]: With dead ends: 3980 [2021-02-19 20:40:49,721 INFO L226 Difference]: Without dead ends: 3931 [2021-02-19 20:40:49,722 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:40:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-02-19 20:40:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-02-19 20:40:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.3572837418991264) internal successors, (11915), 3549 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-02-19 20:40:49,783 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-02-19 20:40:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:49,783 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-02-19 20:40:49,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-02-19 20:40:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:49,789 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:49,789 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:49,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-02-19 20:40:49,789 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1435100460, now seen corresponding path program 67 times [2021-02-19 20:40:49,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:49,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039473702] [2021-02-19 20:40:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:50,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039473702] [2021-02-19 20:40:50,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:50,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:50,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077359589] [2021-02-19 20:40:50,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:50,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:50,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:50,107 INFO L87 Difference]: Start difference. First operand 3550 states and 11915 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:51,545 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-02-19 20:40:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:40:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:51,557 INFO L225 Difference]: With dead ends: 4021 [2021-02-19 20:40:51,557 INFO L226 Difference]: Without dead ends: 3954 [2021-02-19 20:40:51,557 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:40:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-02-19 20:40:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-02-19 20:40:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.3499582056283086) internal successors, (12023), 3589 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-02-19 20:40:51,615 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-02-19 20:40:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:51,615 INFO L480 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-02-19 20:40:51,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-02-19 20:40:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:51,620 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:51,621 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:51,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-02-19 20:40:51,621 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1607243678, now seen corresponding path program 68 times [2021-02-19 20:40:51,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:51,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657112849] [2021-02-19 20:40:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:51,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657112849] [2021-02-19 20:40:51,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:51,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:51,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798269020] [2021-02-19 20:40:51,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:51,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:51,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:51,929 INFO L87 Difference]: Start difference. First operand 3590 states and 12023 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:53,346 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-02-19 20:40:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:40:53,347 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:53,360 INFO L225 Difference]: With dead ends: 4009 [2021-02-19 20:40:53,361 INFO L226 Difference]: Without dead ends: 3946 [2021-02-19 20:40:53,361 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:40:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-02-19 20:40:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-02-19 20:40:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3507400167550965) internal successors, (11999), 3581 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-02-19 20:40:53,420 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-02-19 20:40:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:53,421 INFO L480 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-02-19 20:40:53,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-02-19 20:40:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:53,426 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:53,426 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:53,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-02-19 20:40:53,426 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash 884889462, now seen corresponding path program 69 times [2021-02-19 20:40:53,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:53,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648638123] [2021-02-19 20:40:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:53,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648638123] [2021-02-19 20:40:53,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:53,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:53,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948430366] [2021-02-19 20:40:53,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:53,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:53,688 INFO L87 Difference]: Start difference. First operand 3582 states and 11999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:55,099 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-02-19 20:40:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:40:55,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:55,111 INFO L225 Difference]: With dead ends: 4021 [2021-02-19 20:40:55,111 INFO L226 Difference]: Without dead ends: 3898 [2021-02-19 20:40:55,111 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:40:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-02-19 20:40:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-02-19 20:40:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-02-19 20:40:55,209 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-02-19 20:40:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:55,209 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-02-19 20:40:55,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-02-19 20:40:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:55,215 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:55,215 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:55,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-02-19 20:40:55,215 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1978517580, now seen corresponding path program 70 times [2021-02-19 20:40:55,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:55,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688066760] [2021-02-19 20:40:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:55,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688066760] [2021-02-19 20:40:55,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:55,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:55,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443406602] [2021-02-19 20:40:55,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:55,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:55,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:55,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:55,475 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:40:57,966 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-02-19 20:40:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-02-19 20:40:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:40:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:40:57,982 INFO L225 Difference]: With dead ends: 5827 [2021-02-19 20:40:57,982 INFO L226 Difference]: Without dead ends: 5741 [2021-02-19 20:40:57,983 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-02-19 20:40:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-02-19 20:40:58,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-02-19 20:40:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-02-19 20:40:58,053 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-02-19 20:40:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:40:58,053 INFO L480 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-02-19 20:40:58,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:40:58,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-02-19 20:40:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:40:58,058 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:40:58,058 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:40:58,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-02-19 20:40:58,059 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:40:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:40:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash 535851414, now seen corresponding path program 71 times [2021-02-19 20:40:58,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:40:58,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680249628] [2021-02-19 20:40:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:40:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:40:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:40:58,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680249628] [2021-02-19 20:40:58,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:40:58,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:40:58,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205778592] [2021-02-19 20:40:58,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:40:58,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:40:58,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:40:58,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:40:58,376 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:01,497 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-02-19 20:41:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-02-19 20:41:01,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:01,519 INFO L225 Difference]: With dead ends: 6643 [2021-02-19 20:41:01,519 INFO L226 Difference]: Without dead ends: 6539 [2021-02-19 20:41:01,520 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-02-19 20:41:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-02-19 20:41:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-02-19 20:41:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-02-19 20:41:01,602 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-02-19 20:41:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:01,602 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-02-19 20:41:01,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-02-19 20:41:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:01,610 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:01,610 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:01,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-02-19 20:41:01,611 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:01,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1060034010, now seen corresponding path program 72 times [2021-02-19 20:41:01,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:01,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587950840] [2021-02-19 20:41:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:01,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587950840] [2021-02-19 20:41:01,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:01,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:01,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559886339] [2021-02-19 20:41:01,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:01,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:01,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:01,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:01,916 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:04,083 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-02-19 20:41:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:41:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:04,100 INFO L225 Difference]: With dead ends: 5563 [2021-02-19 20:41:04,100 INFO L226 Difference]: Without dead ends: 5508 [2021-02-19 20:41:04,100 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:41:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-02-19 20:41:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-02-19 20:41:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3481379310344828) internal successors, (12137), 3625 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-02-19 20:41:04,169 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-02-19 20:41:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:04,169 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-02-19 20:41:04,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-02-19 20:41:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:04,175 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:04,175 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:04,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-02-19 20:41:04,175 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 112618212, now seen corresponding path program 73 times [2021-02-19 20:41:04,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:04,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861961771] [2021-02-19 20:41:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:04,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861961771] [2021-02-19 20:41:04,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:04,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:04,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302616482] [2021-02-19 20:41:04,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:04,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:04,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:04,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:04,460 INFO L87 Difference]: Start difference. First operand 3626 states and 12137 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:06,873 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-02-19 20:41:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-02-19 20:41:06,873 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:06,892 INFO L225 Difference]: With dead ends: 6424 [2021-02-19 20:41:06,892 INFO L226 Difference]: Without dead ends: 6364 [2021-02-19 20:41:06,892 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-02-19 20:41:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-02-19 20:41:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-02-19 20:41:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.348606127518631) internal successors, (12132), 3623 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-02-19 20:41:06,968 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-02-19 20:41:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:06,968 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-02-19 20:41:06,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-02-19 20:41:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:06,974 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:06,974 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:06,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-02-19 20:41:06,974 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:06,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1764785390, now seen corresponding path program 74 times [2021-02-19 20:41:06,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:06,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686707777] [2021-02-19 20:41:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:07,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686707777] [2021-02-19 20:41:07,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:07,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:07,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123480346] [2021-02-19 20:41:07,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:07,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:07,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:07,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:07,237 INFO L87 Difference]: Start difference. First operand 3624 states and 12132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:09,138 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-02-19 20:41:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 20:41:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:09,154 INFO L225 Difference]: With dead ends: 5514 [2021-02-19 20:41:09,154 INFO L226 Difference]: Without dead ends: 5423 [2021-02-19 20:41:09,155 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:41:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-02-19 20:41:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-02-19 20:41:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.346950041402153) internal successors, (12126), 3623 states have internal predecessors, (12126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-02-19 20:41:09,224 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-02-19 20:41:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:09,224 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-02-19 20:41:09,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-02-19 20:41:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:09,229 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:09,229 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:09,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-02-19 20:41:09,229 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:09,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1027699700, now seen corresponding path program 75 times [2021-02-19 20:41:09,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:09,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252937214] [2021-02-19 20:41:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:09,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252937214] [2021-02-19 20:41:09,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:09,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:09,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133272490] [2021-02-19 20:41:09,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:09,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:09,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:09,572 INFO L87 Difference]: Start difference. First operand 3624 states and 12126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:11,863 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-02-19 20:41:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:41:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:11,878 INFO L225 Difference]: With dead ends: 6327 [2021-02-19 20:41:11,879 INFO L226 Difference]: Without dead ends: 6211 [2021-02-19 20:41:11,879 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:41:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-02-19 20:41:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-02-19 20:41:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 3.3531380753138076) internal successors, (12021), 3585 states have internal predecessors, (12021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-02-19 20:41:11,941 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-02-19 20:41:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:11,941 INFO L480 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-02-19 20:41:11,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-02-19 20:41:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:11,945 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:11,945 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:11,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-02-19 20:41:11,946 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:11,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1656932964, now seen corresponding path program 76 times [2021-02-19 20:41:11,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:11,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287241425] [2021-02-19 20:41:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:12,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287241425] [2021-02-19 20:41:12,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:12,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:12,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670893553] [2021-02-19 20:41:12,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:12,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:12,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:12,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:12,255 INFO L87 Difference]: Start difference. First operand 3586 states and 12021 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:13,485 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-02-19 20:41:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 20:41:13,486 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:13,497 INFO L225 Difference]: With dead ends: 3853 [2021-02-19 20:41:13,497 INFO L226 Difference]: Without dead ends: 3786 [2021-02-19 20:41:13,498 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 20:41:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-02-19 20:41:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-02-19 20:41:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3440682631434075) internal successors, (12149), 3633 states have internal predecessors, (12149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-02-19 20:41:13,560 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-02-19 20:41:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:13,560 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-02-19 20:41:13,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-02-19 20:41:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:13,566 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:13,566 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:13,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-02-19 20:41:13,567 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1484789746, now seen corresponding path program 77 times [2021-02-19 20:41:13,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:13,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524823540] [2021-02-19 20:41:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:13,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524823540] [2021-02-19 20:41:13,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:13,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:13,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251993478] [2021-02-19 20:41:13,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:13,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:13,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:13,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:13,885 INFO L87 Difference]: Start difference. First operand 3634 states and 12149 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:15,145 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-02-19 20:41:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:41:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:15,157 INFO L225 Difference]: With dead ends: 3841 [2021-02-19 20:41:15,157 INFO L226 Difference]: Without dead ends: 3778 [2021-02-19 20:41:15,158 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 20:41:15,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-02-19 20:41:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-02-19 20:41:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3448275862068964) internal successors, (12125), 3625 states have internal predecessors, (12125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-02-19 20:41:15,216 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-02-19 20:41:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:15,216 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-02-19 20:41:15,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-02-19 20:41:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:15,222 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:15,222 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:15,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-02-19 20:41:15,222 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:15,222 INFO L82 PathProgramCache]: Analyzing trace with hash -318044410, now seen corresponding path program 78 times [2021-02-19 20:41:15,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:15,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740913535] [2021-02-19 20:41:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:15,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740913535] [2021-02-19 20:41:15,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:15,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:15,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682476104] [2021-02-19 20:41:15,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:15,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:15,486 INFO L87 Difference]: Start difference. First operand 3626 states and 12125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:16,734 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-02-19 20:41:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-19 20:41:16,735 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 [2021-02-19 20:41:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:16,746 INFO L225 Difference]: With dead ends: 3841 [2021-02-19 20:41:16,746 INFO L226 Difference]: Without dead ends: 3698 [2021-02-19 20:41:16,747 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 20:41:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-02-19 20:41:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-02-19 20:41:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.355443604813882) internal successors, (11989), 3573 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-02-19 20:41:16,806 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-02-19 20:41:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:16,806 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-02-19 20:41:16,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-02-19 20:41:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:16,811 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:16,811 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:16,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-02-19 20:41:16,812 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash 531460948, now seen corresponding path program 79 times [2021-02-19 20:41:16,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:16,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501850963] [2021-02-19 20:41:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:17,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501850963] [2021-02-19 20:41:17,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:17,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:17,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806345739] [2021-02-19 20:41:17,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:17,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:17,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:17,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:17,079 INFO L87 Difference]: Start difference. First operand 3574 states and 11989 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:18,522 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-02-19 20:41:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 20:41:18,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:18,534 INFO L225 Difference]: With dead ends: 3979 [2021-02-19 20:41:18,534 INFO L226 Difference]: Without dead ends: 3912 [2021-02-19 20:41:18,535 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:41:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-02-19 20:41:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-02-19 20:41:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.3512841756420877) internal successors, (12135), 3621 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-02-19 20:41:18,594 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-02-19 20:41:18,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:18,594 INFO L480 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-02-19 20:41:18,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-02-19 20:41:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:18,599 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:18,600 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:18,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-02-19 20:41:18,600 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:18,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1350953134, now seen corresponding path program 80 times [2021-02-19 20:41:18,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:18,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985405867] [2021-02-19 20:41:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:18,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985405867] [2021-02-19 20:41:18,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:18,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:18,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084295031] [2021-02-19 20:41:18,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:18,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:18,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:18,877 INFO L87 Difference]: Start difference. First operand 3622 states and 12135 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:20,761 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-02-19 20:41:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:41:20,762 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 [2021-02-19 20:41:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:20,774 INFO L225 Difference]: With dead ends: 4064 [2021-02-19 20:41:20,774 INFO L226 Difference]: Without dead ends: 4021 [2021-02-19 20:41:20,774 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-02-19 20:41:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-02-19 20:41:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-02-19 20:41:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-02-19 20:41:20,838 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-02-19 20:41:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:20,838 INFO L480 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-02-19 20:41:20,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-02-19 20:41:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:20,844 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:20,844 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:20,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-02-19 20:41:20,844 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1163415860, now seen corresponding path program 81 times [2021-02-19 20:41:20,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:20,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250174593] [2021-02-19 20:41:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:21,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250174593] [2021-02-19 20:41:21,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:21,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:21,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571350848] [2021-02-19 20:41:21,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:21,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:21,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:21,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:21,157 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:23,031 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-02-19 20:41:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:41:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:23,043 INFO L225 Difference]: With dead ends: 4019 [2021-02-19 20:41:23,044 INFO L226 Difference]: Without dead ends: 3955 [2021-02-19 20:41:23,044 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-02-19 20:41:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-02-19 20:41:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-02-19 20:41:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3541147132169575) internal successors, (12105), 3609 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-02-19 20:41:23,106 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-02-19 20:41:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:23,106 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-02-19 20:41:23,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-02-19 20:41:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:23,112 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:23,112 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:23,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-02-19 20:41:23,112 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:23,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1569091258, now seen corresponding path program 82 times [2021-02-19 20:41:23,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:23,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613417699] [2021-02-19 20:41:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:23,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613417699] [2021-02-19 20:41:23,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:23,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759414027] [2021-02-19 20:41:23,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:23,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:23,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:23,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:23,389 INFO L87 Difference]: Start difference. First operand 3610 states and 12105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:24,871 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-02-19 20:41:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:41:24,871 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:24,883 INFO L225 Difference]: With dead ends: 3979 [2021-02-19 20:41:24,883 INFO L226 Difference]: Without dead ends: 3912 [2021-02-19 20:41:24,883 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:41:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-02-19 20:41:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-02-19 20:41:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-02-19 20:41:24,944 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-02-19 20:41:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:24,944 INFO L480 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-02-19 20:41:24,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-02-19 20:41:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:24,950 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:24,950 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:24,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-02-19 20:41:24,950 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1741234476, now seen corresponding path program 83 times [2021-02-19 20:41:24,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:24,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714703500] [2021-02-19 20:41:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:25,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714703500] [2021-02-19 20:41:25,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:25,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:25,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73444701] [2021-02-19 20:41:25,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:25,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:25,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:25,246 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:26,833 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-02-19 20:41:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:41:26,833 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 [2021-02-19 20:41:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:26,845 INFO L225 Difference]: With dead ends: 3967 [2021-02-19 20:41:26,845 INFO L226 Difference]: Without dead ends: 3904 [2021-02-19 20:41:26,845 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:41:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-02-19 20:41:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-02-19 20:41:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-02-19 20:41:26,908 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-02-19 20:41:26,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:26,908 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-02-19 20:41:26,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:26,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-02-19 20:41:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:26,914 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:26,914 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:26,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-02-19 20:41:26,914 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1517576820, now seen corresponding path program 84 times [2021-02-19 20:41:26,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:26,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825953972] [2021-02-19 20:41:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:27,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825953972] [2021-02-19 20:41:27,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:27,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:27,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619633664] [2021-02-19 20:41:27,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:27,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:27,204 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:29,211 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-02-19 20:41:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-02-19 20:41:29,212 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:29,223 INFO L225 Difference]: With dead ends: 4130 [2021-02-19 20:41:29,223 INFO L226 Difference]: Without dead ends: 4087 [2021-02-19 20:41:29,224 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:41:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-02-19 20:41:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-02-19 20:41:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-02-19 20:41:29,284 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-02-19 20:41:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:29,284 INFO L480 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-02-19 20:41:29,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-02-19 20:41:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:29,290 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:29,290 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:29,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-02-19 20:41:29,290 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash -263021482, now seen corresponding path program 85 times [2021-02-19 20:41:29,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:29,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159925071] [2021-02-19 20:41:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:29,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159925071] [2021-02-19 20:41:29,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:29,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:29,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85271764] [2021-02-19 20:41:29,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:29,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:29,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:29,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:29,566 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:31,565 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-02-19 20:41:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:41:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:31,577 INFO L225 Difference]: With dead ends: 4118 [2021-02-19 20:41:31,577 INFO L226 Difference]: Without dead ends: 4066 [2021-02-19 20:41:31,578 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:41:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-02-19 20:41:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-02-19 20:41:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-02-19 20:41:31,681 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-02-19 20:41:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:31,681 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-02-19 20:41:31,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:31,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-02-19 20:41:31,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:31,688 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:31,688 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:31,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-02-19 20:41:31,688 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:31,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1858906906, now seen corresponding path program 86 times [2021-02-19 20:41:31,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:31,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805538582] [2021-02-19 20:41:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:31,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805538582] [2021-02-19 20:41:31,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:31,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:31,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476562623] [2021-02-19 20:41:31,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:31,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:31,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:31,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:31,998 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:33,697 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-02-19 20:41:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:41:33,697 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:33,709 INFO L225 Difference]: With dead ends: 4095 [2021-02-19 20:41:33,709 INFO L226 Difference]: Without dead ends: 4040 [2021-02-19 20:41:33,710 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-02-19 20:41:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-02-19 20:41:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-02-19 20:41:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3519800609249515) internal successors, (12104), 3611 states have internal predecessors, (12104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-02-19 20:41:33,773 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-02-19 20:41:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:33,773 INFO L480 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-02-19 20:41:33,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-02-19 20:41:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:33,780 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:33,780 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:33,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-02-19 20:41:33,780 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:33,780 INFO L82 PathProgramCache]: Analyzing trace with hash -686254684, now seen corresponding path program 87 times [2021-02-19 20:41:33,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:33,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755737691] [2021-02-19 20:41:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:34,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755737691] [2021-02-19 20:41:34,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:34,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:34,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644266070] [2021-02-19 20:41:34,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:34,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:34,078 INFO L87 Difference]: Start difference. First operand 3612 states and 12104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:35,681 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-02-19 20:41:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:41:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:35,694 INFO L225 Difference]: With dead ends: 4030 [2021-02-19 20:41:35,694 INFO L226 Difference]: Without dead ends: 3984 [2021-02-19 20:41:35,694 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:41:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-02-19 20:41:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-02-19 20:41:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.350484094052559) internal successors, (12112), 3615 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-02-19 20:41:35,753 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-02-19 20:41:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:35,753 INFO L480 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-02-19 20:41:35,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-02-19 20:41:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:35,758 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:35,758 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:35,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-02-19 20:41:35,758 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash -933720846, now seen corresponding path program 88 times [2021-02-19 20:41:35,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:35,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601729055] [2021-02-19 20:41:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:36,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601729055] [2021-02-19 20:41:36,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:36,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:36,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742480573] [2021-02-19 20:41:36,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:36,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:36,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:36,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:36,052 INFO L87 Difference]: Start difference. First operand 3616 states and 12112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:37,732 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-02-19 20:41:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:41:37,733 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 [2021-02-19 20:41:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:37,744 INFO L225 Difference]: With dead ends: 3990 [2021-02-19 20:41:37,744 INFO L226 Difference]: Without dead ends: 3941 [2021-02-19 20:41:37,744 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:41:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-02-19 20:41:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-02-19 20:41:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3539528432732317) internal successors, (12091), 3605 states have internal predecessors, (12091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-02-19 20:41:37,804 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-02-19 20:41:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:37,804 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-02-19 20:41:37,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-02-19 20:41:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:37,810 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:37,810 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:37,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-02-19 20:41:37,810 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash -230334670, now seen corresponding path program 89 times [2021-02-19 20:41:37,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:37,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214145759] [2021-02-19 20:41:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:38,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214145759] [2021-02-19 20:41:38,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:38,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:38,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427972017] [2021-02-19 20:41:38,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:38,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:38,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:38,153 INFO L87 Difference]: Start difference. First operand 3606 states and 12091 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:39,676 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-02-19 20:41:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:41:39,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:39,689 INFO L225 Difference]: With dead ends: 4037 [2021-02-19 20:41:39,689 INFO L226 Difference]: Without dead ends: 3970 [2021-02-19 20:41:39,689 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:41:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-02-19 20:41:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-02-19 20:41:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3467764060356653) internal successors, (12199), 3645 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-02-19 20:41:39,749 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-02-19 20:41:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:39,749 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-02-19 20:41:39,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-02-19 20:41:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:39,754 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:39,754 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:39,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-02-19 20:41:39,755 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:39,755 INFO L82 PathProgramCache]: Analyzing trace with hash -402477888, now seen corresponding path program 90 times [2021-02-19 20:41:39,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:39,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054892260] [2021-02-19 20:41:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:40,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054892260] [2021-02-19 20:41:40,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:40,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:40,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990034098] [2021-02-19 20:41:40,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:40,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:40,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:40,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:40,066 INFO L87 Difference]: Start difference. First operand 3646 states and 12199 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:41,693 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-02-19 20:41:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-19 20:41:41,694 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:41,706 INFO L225 Difference]: With dead ends: 4025 [2021-02-19 20:41:41,706 INFO L226 Difference]: Without dead ends: 3962 [2021-02-19 20:41:41,706 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:41:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-02-19 20:41:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-02-19 20:41:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3475391806433876) internal successors, (12175), 3637 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-02-19 20:41:41,768 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-02-19 20:41:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:41,768 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-02-19 20:41:41,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-02-19 20:41:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:41,774 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:41,774 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:41,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-02-19 20:41:41,774 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2089655252, now seen corresponding path program 91 times [2021-02-19 20:41:41,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:41,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102503094] [2021-02-19 20:41:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:42,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102503094] [2021-02-19 20:41:42,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:42,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853942793] [2021-02-19 20:41:42,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:42,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:42,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:42,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:42,103 INFO L87 Difference]: Start difference. First operand 3638 states and 12175 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:43,797 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-02-19 20:41:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:41:43,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:43,810 INFO L225 Difference]: With dead ends: 4037 [2021-02-19 20:41:43,811 INFO L226 Difference]: Without dead ends: 3914 [2021-02-19 20:41:43,811 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:41:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-02-19 20:41:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-02-19 20:41:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-02-19 20:41:43,873 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-02-19 20:41:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:43,873 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-02-19 20:41:43,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-02-19 20:41:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:43,879 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:43,879 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:43,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-02-19 20:41:43,879 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:43,880 INFO L82 PathProgramCache]: Analyzing trace with hash -773751790, now seen corresponding path program 92 times [2021-02-19 20:41:43,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:43,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047796471] [2021-02-19 20:41:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:44,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047796471] [2021-02-19 20:41:44,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:44,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:44,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87827088] [2021-02-19 20:41:44,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:44,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:44,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:44,184 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:46,918 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-02-19 20:41:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:41:46,919 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:46,934 INFO L225 Difference]: With dead ends: 5612 [2021-02-19 20:41:46,934 INFO L226 Difference]: Without dead ends: 5569 [2021-02-19 20:41:46,935 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:41:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-02-19 20:41:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-02-19 20:41:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3478861563967945) internal successors, (12116), 3619 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-02-19 20:41:47,009 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-02-19 20:41:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:47,009 INFO L480 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-02-19 20:41:47,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-02-19 20:41:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:47,016 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:47,016 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:47,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-02-19 20:41:47,016 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:47,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1740617204, now seen corresponding path program 93 times [2021-02-19 20:41:47,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:47,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371292372] [2021-02-19 20:41:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:47,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371292372] [2021-02-19 20:41:47,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:47,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:47,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490075938] [2021-02-19 20:41:47,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:47,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:47,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:47,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:47,345 INFO L87 Difference]: Start difference. First operand 3620 states and 12116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:50,587 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-02-19 20:41:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-02-19 20:41:50,588 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:50,608 INFO L225 Difference]: With dead ends: 6473 [2021-02-19 20:41:50,609 INFO L226 Difference]: Without dead ends: 6421 [2021-02-19 20:41:50,609 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-02-19 20:41:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-02-19 20:41:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-02-19 20:41:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-02-19 20:41:50,689 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-02-19 20:41:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:50,689 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-02-19 20:41:50,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-02-19 20:41:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:50,695 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:50,695 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:50,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-02-19 20:41:50,696 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash 144731780, now seen corresponding path program 94 times [2021-02-19 20:41:50,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:50,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128585330] [2021-02-19 20:41:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:51,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128585330] [2021-02-19 20:41:51,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:51,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:51,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882314268] [2021-02-19 20:41:51,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:51,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:51,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:51,011 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:53,284 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-02-19 20:41:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:41:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:53,301 INFO L225 Difference]: With dead ends: 5417 [2021-02-19 20:41:53,301 INFO L226 Difference]: Without dead ends: 5362 [2021-02-19 20:41:53,302 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:41:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-02-19 20:41:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-02-19 20:41:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 3.3487406587323556) internal successors, (12099), 3613 states have internal predecessors, (12099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-02-19 20:41:53,372 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-02-19 20:41:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:53,373 INFO L480 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-02-19 20:41:53,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-02-19 20:41:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:53,379 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:53,379 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:53,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-02-19 20:41:53,379 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1317384002, now seen corresponding path program 95 times [2021-02-19 20:41:53,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:53,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982684296] [2021-02-19 20:41:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:53,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982684296] [2021-02-19 20:41:53,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:53,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:53,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859189259] [2021-02-19 20:41:53,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:53,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:53,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:53,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:53,703 INFO L87 Difference]: Start difference. First operand 3614 states and 12099 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:56,516 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-02-19 20:41:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-02-19 20:41:56,518 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 [2021-02-19 20:41:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:56,536 INFO L225 Difference]: With dead ends: 6278 [2021-02-19 20:41:56,536 INFO L226 Difference]: Without dead ends: 6218 [2021-02-19 20:41:56,537 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-02-19 20:41:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-02-19 20:41:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-02-19 20:41:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3492107449459985) internal successors, (12094), 3611 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-02-19 20:41:56,611 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-02-19 20:41:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:56,611 INFO L480 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-02-19 20:41:56,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-02-19 20:41:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:56,617 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:56,617 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:56,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-02-19 20:41:56,617 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:56,618 INFO L82 PathProgramCache]: Analyzing trace with hash -560019600, now seen corresponding path program 96 times [2021-02-19 20:41:56,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:56,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137543495] [2021-02-19 20:41:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:56,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137543495] [2021-02-19 20:41:56,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:56,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:56,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239949315] [2021-02-19 20:41:56,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:56,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:56,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:56,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:56,947 INFO L87 Difference]: Start difference. First operand 3612 states and 12094 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:41:59,240 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-02-19 20:41:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 20:41:59,241 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:41:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:41:59,257 INFO L225 Difference]: With dead ends: 5378 [2021-02-19 20:41:59,257 INFO L226 Difference]: Without dead ends: 5287 [2021-02-19 20:41:59,258 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:41:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-02-19 20:41:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-02-19 20:41:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3475491553586263) internal successors, (12088), 3611 states have internal predecessors, (12088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-02-19 20:41:59,327 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-02-19 20:41:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:41:59,327 INFO L480 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-02-19 20:41:59,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:41:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-02-19 20:41:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:41:59,334 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:41:59,334 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:41:59,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-02-19 20:41:59,334 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:41:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:41:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2062501806, now seen corresponding path program 97 times [2021-02-19 20:41:59,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:41:59,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769771688] [2021-02-19 20:41:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:41:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:41:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:41:59,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769771688] [2021-02-19 20:41:59,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:41:59,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:41:59,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410215663] [2021-02-19 20:41:59,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:41:59,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:41:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:41:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:41:59,671 INFO L87 Difference]: Start difference. First operand 3612 states and 12088 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:02,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:02,570 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-02-19 20:42:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 20:42:02,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:02,590 INFO L225 Difference]: With dead ends: 6191 [2021-02-19 20:42:02,590 INFO L226 Difference]: Without dead ends: 6075 [2021-02-19 20:42:02,590 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:42:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-02-19 20:42:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-02-19 20:42:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.353859013652828) internal successors, (12037), 3589 states have internal predecessors, (12037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-02-19 20:42:02,670 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-02-19 20:42:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:02,670 INFO L480 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-02-19 20:42:02,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-02-19 20:42:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:02,676 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:02,676 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:02,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-02-19 20:42:02,676 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:02,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1433268542, now seen corresponding path program 98 times [2021-02-19 20:42:02,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:02,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789628475] [2021-02-19 20:42:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:03,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789628475] [2021-02-19 20:42:03,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:03,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:42:03,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930624891] [2021-02-19 20:42:03,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:42:03,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:03,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:42:03,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:42:03,047 INFO L87 Difference]: Start difference. First operand 3590 states and 12037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:04,602 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-02-19 20:42:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 20:42:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:04,614 INFO L225 Difference]: With dead ends: 3901 [2021-02-19 20:42:04,614 INFO L226 Difference]: Without dead ends: 3834 [2021-02-19 20:42:04,615 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-02-19 20:42:04,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-02-19 20:42:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-02-19 20:42:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.342935528120713) internal successors, (12185), 3645 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-02-19 20:42:04,676 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-02-19 20:42:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:04,676 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-02-19 20:42:04,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-02-19 20:42:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:04,682 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:04,682 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:04,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-02-19 20:42:04,682 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1605411760, now seen corresponding path program 99 times [2021-02-19 20:42:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:04,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872492377] [2021-02-19 20:42:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:05,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872492377] [2021-02-19 20:42:05,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:05,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:42:05,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150432900] [2021-02-19 20:42:05,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:42:05,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:05,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:42:05,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:42:05,039 INFO L87 Difference]: Start difference. First operand 3646 states and 12185 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:06,631 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-02-19 20:42:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:42:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:06,643 INFO L225 Difference]: With dead ends: 3889 [2021-02-19 20:42:06,643 INFO L226 Difference]: Without dead ends: 3826 [2021-02-19 20:42:06,644 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-02-19 20:42:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-02-19 20:42:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-02-19 20:42:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.343689854275502) internal successors, (12161), 3637 states have internal predecessors, (12161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-02-19 20:42:06,704 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-02-19 20:42:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:06,704 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-02-19 20:42:06,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-02-19 20:42:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:06,710 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:06,710 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:06,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-02-19 20:42:06,710 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:06,711 INFO L82 PathProgramCache]: Analyzing trace with hash 886721380, now seen corresponding path program 100 times [2021-02-19 20:42:06,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:06,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676707353] [2021-02-19 20:42:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:07,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676707353] [2021-02-19 20:42:07,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:07,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:42:07,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116269125] [2021-02-19 20:42:07,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:42:07,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:42:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:42:07,054 INFO L87 Difference]: Start difference. First operand 3638 states and 12161 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:08,638 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-02-19 20:42:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-19 20:42:08,639 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:08,651 INFO L225 Difference]: With dead ends: 3889 [2021-02-19 20:42:08,651 INFO L226 Difference]: Without dead ends: 3754 [2021-02-19 20:42:08,651 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-02-19 20:42:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-02-19 20:42:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-02-19 20:42:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3523517951572503) internal successors, (12045), 3593 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-02-19 20:42:08,759 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-02-19 20:42:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:08,759 INFO L480 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-02-19 20:42:08,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-02-19 20:42:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:08,765 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:08,765 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:08,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-02-19 20:42:08,765 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:08,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:08,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1466140616, now seen corresponding path program 101 times [2021-02-19 20:42:08,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:08,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338803598] [2021-02-19 20:42:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:09,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338803598] [2021-02-19 20:42:09,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:09,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:42:09,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754304440] [2021-02-19 20:42:09,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:42:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:09,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:42:09,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:42:09,121 INFO L87 Difference]: Start difference. First operand 3594 states and 12045 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:10,657 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-02-19 20:42:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-19 20:42:10,658 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:10,670 INFO L225 Difference]: With dead ends: 3825 [2021-02-19 20:42:10,670 INFO L226 Difference]: Without dead ends: 3758 [2021-02-19 20:42:10,670 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:42:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-02-19 20:42:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-02-19 20:42:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.341463414634146) internal successors, (12193), 3649 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-02-19 20:42:10,732 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-02-19 20:42:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:10,732 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-02-19 20:42:10,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-02-19 20:42:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:10,738 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:10,738 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:10,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-02-19 20:42:10,738 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:10,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1293997398, now seen corresponding path program 102 times [2021-02-19 20:42:10,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:10,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492782232] [2021-02-19 20:42:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:11,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492782232] [2021-02-19 20:42:11,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:11,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:42:11,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628507626] [2021-02-19 20:42:11,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:42:11,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:42:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:42:11,113 INFO L87 Difference]: Start difference. First operand 3650 states and 12193 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:12,712 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-02-19 20:42:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-19 20:42:12,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:12,725 INFO L225 Difference]: With dead ends: 3813 [2021-02-19 20:42:12,725 INFO L226 Difference]: Without dead ends: 3750 [2021-02-19 20:42:12,726 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:42:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-02-19 20:42:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-02-19 20:42:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3422136775611095) internal successors, (12169), 3641 states have internal predecessors, (12169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-02-19 20:42:12,790 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-02-19 20:42:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:12,790 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-02-19 20:42:12,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-02-19 20:42:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:12,796 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:12,796 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:12,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-02-19 20:42:12,796 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:12,797 INFO L82 PathProgramCache]: Analyzing trace with hash -508836758, now seen corresponding path program 103 times [2021-02-19 20:42:12,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:12,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589997597] [2021-02-19 20:42:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:13,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589997597] [2021-02-19 20:42:13,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:13,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:42:13,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45782866] [2021-02-19 20:42:13,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:42:13,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:13,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:42:13,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:42:13,177 INFO L87 Difference]: Start difference. First operand 3642 states and 12169 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:14,704 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-02-19 20:42:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-19 20:42:14,705 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:14,715 INFO L225 Difference]: With dead ends: 3813 [2021-02-19 20:42:14,715 INFO L226 Difference]: Without dead ends: 3662 [2021-02-19 20:42:14,715 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:42:14,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-02-19 20:42:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-02-19 20:42:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3557665456576373) internal successors, (12017), 3581 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-02-19 20:42:14,768 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-02-19 20:42:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:14,768 INFO L480 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-02-19 20:42:14,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-02-19 20:42:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:14,774 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:14,774 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:14,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-02-19 20:42:14,774 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:14,774 INFO L82 PathProgramCache]: Analyzing trace with hash -811836152, now seen corresponding path program 104 times [2021-02-19 20:42:14,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:14,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361385138] [2021-02-19 20:42:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:15,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361385138] [2021-02-19 20:42:15,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:15,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:42:15,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366517149] [2021-02-19 20:42:15,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:42:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:15,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:42:15,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:42:15,066 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 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) [2021-02-19 20:42:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:17,194 INFO L93 Difference]: Finished difference Result 4145 states and 13826 transitions. [2021-02-19 20:42:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:42:17,195 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 [2021-02-19 20:42:17,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:17,206 INFO L225 Difference]: With dead ends: 4145 [2021-02-19 20:42:17,206 INFO L226 Difference]: Without dead ends: 4066 [2021-02-19 20:42:17,206 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:42:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-02-19 20:42:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3658. [2021-02-19 20:42:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3511074651353567) internal successors, (12255), 3657 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12255 transitions. [2021-02-19 20:42:17,268 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12255 transitions. Word has length 39 [2021-02-19 20:42:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:17,268 INFO L480 AbstractCegarLoop]: Abstraction has 3658 states and 12255 transitions. [2021-02-19 20:42:17,268 INFO L481 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) [2021-02-19 20:42:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12255 transitions. [2021-02-19 20:42:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:17,273 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:17,273 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:17,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-02-19 20:42:17,274 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:17,274 INFO L82 PathProgramCache]: Analyzing trace with hash -588696856, now seen corresponding path program 105 times [2021-02-19 20:42:17,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:17,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990778124] [2021-02-19 20:42:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:17,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990778124] [2021-02-19 20:42:17,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:17,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:42:17,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277446514] [2021-02-19 20:42:17,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:42:17,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:17,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:42:17,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:42:17,574 INFO L87 Difference]: Start difference. First operand 3658 states and 12255 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:20,277 INFO L93 Difference]: Finished difference Result 4191 states and 13951 transitions. [2021-02-19 20:42:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 20:42:20,278 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 [2021-02-19 20:42:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:20,289 INFO L225 Difference]: With dead ends: 4191 [2021-02-19 20:42:20,289 INFO L226 Difference]: Without dead ends: 4061 [2021-02-19 20:42:20,290 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-02-19 20:42:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2021-02-19 20:42:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3634. [2021-02-19 20:42:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.353426919900908) internal successors, (12183), 3633 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12183 transitions. [2021-02-19 20:42:20,350 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12183 transitions. Word has length 39 [2021-02-19 20:42:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:20,350 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 12183 transitions. [2021-02-19 20:42:20,350 INFO L481 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) [2021-02-19 20:42:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12183 transitions. [2021-02-19 20:42:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:20,355 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:20,356 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:20,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-02-19 20:42:20,356 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1412053108, now seen corresponding path program 106 times [2021-02-19 20:42:20,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:20,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263576419] [2021-02-19 20:42:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:20,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263576419] [2021-02-19 20:42:20,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:20,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:20,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508853455] [2021-02-19 20:42:20,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:20,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:20,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:20,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:20,690 INFO L87 Difference]: Start difference. First operand 3634 states and 12183 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) [2021-02-19 20:42:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:23,218 INFO L93 Difference]: Finished difference Result 4175 states and 13901 transitions. [2021-02-19 20:42:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:42:23,219 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 [2021-02-19 20:42:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:23,230 INFO L225 Difference]: With dead ends: 4175 [2021-02-19 20:42:23,230 INFO L226 Difference]: Without dead ends: 4108 [2021-02-19 20:42:23,231 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:42:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-02-19 20:42:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3650. [2021-02-19 20:42:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3496848451630585) internal successors, (12223), 3649 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12223 transitions. [2021-02-19 20:42:23,288 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12223 transitions. Word has length 39 [2021-02-19 20:42:23,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:23,288 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12223 transitions. [2021-02-19 20:42:23,289 INFO L481 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) [2021-02-19 20:42:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12223 transitions. [2021-02-19 20:42:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:23,294 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:23,294 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:23,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-02-19 20:42:23,294 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash -470360974, now seen corresponding path program 107 times [2021-02-19 20:42:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:23,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668366824] [2021-02-19 20:42:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:23,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668366824] [2021-02-19 20:42:23,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:23,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:23,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380482821] [2021-02-19 20:42:23,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:23,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:23,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:23,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:23,624 INFO L87 Difference]: Start difference. First operand 3650 states and 12223 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) [2021-02-19 20:42:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:26,925 INFO L93 Difference]: Finished difference Result 4312 states and 14258 transitions. [2021-02-19 20:42:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-02-19 20:42:26,926 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 [2021-02-19 20:42:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:26,935 INFO L225 Difference]: With dead ends: 4312 [2021-02-19 20:42:26,935 INFO L226 Difference]: Without dead ends: 4269 [2021-02-19 20:42:26,936 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-02-19 20:42:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-02-19 20:42:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3656. [2021-02-19 20:42:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 3.3477428180574553) internal successors, (12236), 3655 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 12236 transitions. [2021-02-19 20:42:26,992 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 12236 transitions. Word has length 39 [2021-02-19 20:42:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:26,992 INFO L480 AbstractCegarLoop]: Abstraction has 3656 states and 12236 transitions. [2021-02-19 20:42:26,992 INFO L481 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) [2021-02-19 20:42:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 12236 transitions. [2021-02-19 20:42:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:26,997 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:26,998 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:26,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-02-19 20:42:26,998 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:26,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2044008020, now seen corresponding path program 108 times [2021-02-19 20:42:26,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:26,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743500505] [2021-02-19 20:42:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:27,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743500505] [2021-02-19 20:42:27,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:27,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:27,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643323657] [2021-02-19 20:42:27,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:27,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:27,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:27,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:27,335 INFO L87 Difference]: Start difference. First operand 3656 states and 12236 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) [2021-02-19 20:42:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:30,573 INFO L93 Difference]: Finished difference Result 4243 states and 14078 transitions. [2021-02-19 20:42:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-19 20:42:30,575 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 [2021-02-19 20:42:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:30,586 INFO L225 Difference]: With dead ends: 4243 [2021-02-19 20:42:30,586 INFO L226 Difference]: Without dead ends: 4179 [2021-02-19 20:42:30,587 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-02-19 20:42:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2021-02-19 20:42:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 3638. [2021-02-19 20:42:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3524883145449547) internal successors, (12193), 3637 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12193 transitions. [2021-02-19 20:42:30,647 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12193 transitions. Word has length 39 [2021-02-19 20:42:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:30,647 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12193 transitions. [2021-02-19 20:42:30,647 INFO L481 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) [2021-02-19 20:42:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12193 transitions. [2021-02-19 20:42:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:30,652 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:30,652 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:30,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-02-19 20:42:30,652 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash -688499098, now seen corresponding path program 109 times [2021-02-19 20:42:30,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:30,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168707338] [2021-02-19 20:42:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:31,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168707338] [2021-02-19 20:42:31,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:31,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:31,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129921651] [2021-02-19 20:42:31,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:31,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:31,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:31,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:31,004 INFO L87 Difference]: Start difference. First operand 3638 states and 12193 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) [2021-02-19 20:42:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:33,271 INFO L93 Difference]: Finished difference Result 4061 states and 13536 transitions. [2021-02-19 20:42:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:42:33,272 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 [2021-02-19 20:42:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:33,283 INFO L225 Difference]: With dead ends: 4061 [2021-02-19 20:42:33,283 INFO L226 Difference]: Without dead ends: 3994 [2021-02-19 20:42:33,284 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:42:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2021-02-19 20:42:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3646. [2021-02-19 20:42:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-02-19 20:42:33,347 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-02-19 20:42:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:33,347 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-02-19 20:42:33,347 INFO L481 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) [2021-02-19 20:42:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-02-19 20:42:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:33,353 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:33,353 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:33,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-02-19 20:42:33,353 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:33,354 INFO L82 PathProgramCache]: Analyzing trace with hash -860642316, now seen corresponding path program 110 times [2021-02-19 20:42:33,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:33,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076429838] [2021-02-19 20:42:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:33,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076429838] [2021-02-19 20:42:33,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:33,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:33,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139862950] [2021-02-19 20:42:33,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:33,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:33,700 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-02-19 20:42:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:36,039 INFO L93 Difference]: Finished difference Result 4049 states and 13496 transitions. [2021-02-19 20:42:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:42:36,041 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 [2021-02-19 20:42:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:36,051 INFO L225 Difference]: With dead ends: 4049 [2021-02-19 20:42:36,052 INFO L226 Difference]: Without dead ends: 3986 [2021-02-19 20:42:36,052 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:42:36,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-02-19 20:42:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3638. [2021-02-19 20:42:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-02-19 20:42:36,111 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-02-19 20:42:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:36,111 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-02-19 20:42:36,112 INFO L481 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) [2021-02-19 20:42:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-02-19 20:42:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:36,117 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:36,117 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:36,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-02-19 20:42:36,117 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1896798316, now seen corresponding path program 111 times [2021-02-19 20:42:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:36,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677277931] [2021-02-19 20:42:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:36,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677277931] [2021-02-19 20:42:36,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:36,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:36,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973141190] [2021-02-19 20:42:36,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:36,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:36,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:36,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:36,482 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-02-19 20:42:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:39,680 INFO L93 Difference]: Finished difference Result 4183 states and 13831 transitions. [2021-02-19 20:42:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 20:42:39,681 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 [2021-02-19 20:42:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:39,693 INFO L225 Difference]: With dead ends: 4183 [2021-02-19 20:42:39,693 INFO L226 Difference]: Without dead ends: 4140 [2021-02-19 20:42:39,693 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=311, Invalid=2995, Unknown=0, NotChecked=0, Total=3306 [2021-02-19 20:42:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-02-19 20:42:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3646. [2021-02-19 20:42:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-02-19 20:42:39,752 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-02-19 20:42:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:39,753 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-02-19 20:42:39,753 INFO L481 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) [2021-02-19 20:42:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-02-19 20:42:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:39,758 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:39,758 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:39,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-02-19 20:42:39,758 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:39,759 INFO L82 PathProgramCache]: Analyzing trace with hash 617570678, now seen corresponding path program 112 times [2021-02-19 20:42:39,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:39,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082242360] [2021-02-19 20:42:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:40,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082242360] [2021-02-19 20:42:40,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:40,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:40,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554012859] [2021-02-19 20:42:40,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:40,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:40,134 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-02-19 20:42:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:43,395 INFO L93 Difference]: Finished difference Result 4171 states and 13793 transitions. [2021-02-19 20:42:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:42:43,397 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 [2021-02-19 20:42:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:43,409 INFO L225 Difference]: With dead ends: 4171 [2021-02-19 20:42:43,410 INFO L226 Difference]: Without dead ends: 4119 [2021-02-19 20:42:43,410 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:42:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-02-19 20:42:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3638. [2021-02-19 20:42:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-02-19 20:42:43,474 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-02-19 20:42:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:43,474 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-02-19 20:42:43,474 INFO L481 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) [2021-02-19 20:42:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-02-19 20:42:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:43,480 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:43,480 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:43,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-02-19 20:42:43,480 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:43,481 INFO L82 PathProgramCache]: Analyzing trace with hash -978314746, now seen corresponding path program 113 times [2021-02-19 20:42:43,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:43,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681696020] [2021-02-19 20:42:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:43,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681696020] [2021-02-19 20:42:43,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:43,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:43,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522721483] [2021-02-19 20:42:43,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:43,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:43,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:43,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:43,881 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-02-19 20:42:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:46,656 INFO L93 Difference]: Finished difference Result 4136 states and 13684 transitions. [2021-02-19 20:42:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:42:46,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:46,669 INFO L225 Difference]: With dead ends: 4136 [2021-02-19 20:42:46,669 INFO L226 Difference]: Without dead ends: 4081 [2021-02-19 20:42:46,670 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2021-02-19 20:42:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-02-19 20:42:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3640. [2021-02-19 20:42:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.350370981038747) internal successors, (12192), 3639 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12192 transitions. [2021-02-19 20:42:46,728 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12192 transitions. Word has length 39 [2021-02-19 20:42:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:46,728 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12192 transitions. [2021-02-19 20:42:46,728 INFO L481 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) [2021-02-19 20:42:46,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12192 transitions. [2021-02-19 20:42:46,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:46,734 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:46,734 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:46,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-02-19 20:42:46,734 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash 194337476, now seen corresponding path program 114 times [2021-02-19 20:42:46,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:46,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084625303] [2021-02-19 20:42:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:47,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084625303] [2021-02-19 20:42:47,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:47,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:47,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469632964] [2021-02-19 20:42:47,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:47,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:47,120 INFO L87 Difference]: Start difference. First operand 3640 states and 12192 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) [2021-02-19 20:42:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:49,646 INFO L93 Difference]: Finished difference Result 4046 states and 13486 transitions. [2021-02-19 20:42:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:42:49,648 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 [2021-02-19 20:42:49,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:49,658 INFO L225 Difference]: With dead ends: 4046 [2021-02-19 20:42:49,658 INFO L226 Difference]: Without dead ends: 3982 [2021-02-19 20:42:49,659 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:42:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-02-19 20:42:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-02-19 20:42:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3523259014588493) internal successors, (12179), 3633 states have internal predecessors, (12179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12179 transitions. [2021-02-19 20:42:49,716 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12179 transitions. Word has length 39 [2021-02-19 20:42:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:49,716 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 12179 transitions. [2021-02-19 20:42:49,716 INFO L481 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) [2021-02-19 20:42:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12179 transitions. [2021-02-19 20:42:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:49,721 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:49,721 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:49,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-02-19 20:42:49,722 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:49,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1858581498, now seen corresponding path program 115 times [2021-02-19 20:42:49,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:49,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640204037] [2021-02-19 20:42:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:50,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640204037] [2021-02-19 20:42:50,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:50,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:50,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089982190] [2021-02-19 20:42:50,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:50,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:50,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:50,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:50,127 INFO L87 Difference]: Start difference. First operand 3634 states and 12179 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) [2021-02-19 20:42:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:54,110 INFO L93 Difference]: Finished difference Result 4309 states and 14218 transitions. [2021-02-19 20:42:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-19 20:42:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:42:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:54,123 INFO L225 Difference]: With dead ends: 4309 [2021-02-19 20:42:54,123 INFO L226 Difference]: Without dead ends: 4172 [2021-02-19 20:42:54,123 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-02-19 20:42:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-02-19 20:42:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-02-19 20:42:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-02-19 20:42:54,182 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-02-19 20:42:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:54,182 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-02-19 20:42:54,182 INFO L481 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) [2021-02-19 20:42:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-02-19 20:42:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:54,187 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:54,187 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:54,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-02-19 20:42:54,187 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash 941494898, now seen corresponding path program 116 times [2021-02-19 20:42:54,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:54,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920186175] [2021-02-19 20:42:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:54,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920186175] [2021-02-19 20:42:54,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:54,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:54,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747007114] [2021-02-19 20:42:54,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:54,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:54,634 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-02-19 20:42:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:58,087 INFO L93 Difference]: Finished difference Result 4287 states and 14084 transitions. [2021-02-19 20:42:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:42:58,089 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 [2021-02-19 20:42:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:58,100 INFO L225 Difference]: With dead ends: 4287 [2021-02-19 20:42:58,100 INFO L226 Difference]: Without dead ends: 4223 [2021-02-19 20:42:58,101 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:42:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-02-19 20:42:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-02-19 20:42:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:42:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-02-19 20:42:58,160 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-02-19 20:42:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:58,160 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-02-19 20:42:58,160 INFO L481 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) [2021-02-19 20:42:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-02-19 20:42:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:42:58,166 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:58,166 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:42:58,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-02-19 20:42:58,166 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:58,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1859978468, now seen corresponding path program 117 times [2021-02-19 20:42:58,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:58,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875496137] [2021-02-19 20:42:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:58,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875496137] [2021-02-19 20:42:58,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:58,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:42:58,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721790600] [2021-02-19 20:42:58,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:42:58,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:42:58,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:42:58,575 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-02-19 20:43:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:01,524 INFO L93 Difference]: Finished difference Result 4192 states and 13832 transitions. [2021-02-19 20:43:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:43:01,526 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 [2021-02-19 20:43:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:01,537 INFO L225 Difference]: With dead ends: 4192 [2021-02-19 20:43:01,537 INFO L226 Difference]: Without dead ends: 4137 [2021-02-19 20:43:01,538 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:43:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-02-19 20:43:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-02-19 20:43:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.350370981038747) internal successors, (12192), 3639 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12192 transitions. [2021-02-19 20:43:01,598 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12192 transitions. Word has length 39 [2021-02-19 20:43:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:01,598 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12192 transitions. [2021-02-19 20:43:01,598 INFO L481 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) [2021-02-19 20:43:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12192 transitions. [2021-02-19 20:43:01,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:01,604 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:01,604 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:01,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-02-19 20:43:01,604 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:01,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1262336606, now seen corresponding path program 118 times [2021-02-19 20:43:01,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:01,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908959212] [2021-02-19 20:43:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:02,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908959212] [2021-02-19 20:43:02,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:02,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:02,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117495460] [2021-02-19 20:43:02,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:02,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:02,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:02,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:02,009 INFO L87 Difference]: Start difference. First operand 3640 states and 12192 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) [2021-02-19 20:43:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:05,063 INFO L93 Difference]: Finished difference Result 4162 states and 13771 transitions. [2021-02-19 20:43:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 20:43:05,064 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 [2021-02-19 20:43:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:05,076 INFO L225 Difference]: With dead ends: 4162 [2021-02-19 20:43:05,076 INFO L226 Difference]: Without dead ends: 4102 [2021-02-19 20:43:05,076 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:43:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-02-19 20:43:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-02-19 20:43:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.350838603244432) internal successors, (12187), 3637 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12187 transitions. [2021-02-19 20:43:05,136 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12187 transitions. Word has length 39 [2021-02-19 20:43:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:05,136 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12187 transitions. [2021-02-19 20:43:05,136 INFO L481 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) [2021-02-19 20:43:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12187 transitions. [2021-02-19 20:43:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:05,142 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:05,143 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:05,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-02-19 20:43:05,143 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash 953064148, now seen corresponding path program 119 times [2021-02-19 20:43:05,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:05,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693624739] [2021-02-19 20:43:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:05,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693624739] [2021-02-19 20:43:05,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:05,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:43:05,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653670686] [2021-02-19 20:43:05,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:43:05,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:43:05,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:43:05,581 INFO L87 Difference]: Start difference. First operand 3638 states and 12187 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) [2021-02-19 20:43:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:08,247 INFO L93 Difference]: Finished difference Result 4073 states and 13558 transitions. [2021-02-19 20:43:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:43:08,249 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 [2021-02-19 20:43:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:08,260 INFO L225 Difference]: With dead ends: 4073 [2021-02-19 20:43:08,260 INFO L226 Difference]: Without dead ends: 3997 [2021-02-19 20:43:08,260 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:43:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-02-19 20:43:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-02-19 20:43:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3478737997256514) internal successors, (12203), 3645 states have internal predecessors, (12203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12203 transitions. [2021-02-19 20:43:08,317 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12203 transitions. Word has length 39 [2021-02-19 20:43:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:08,318 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12203 transitions. [2021-02-19 20:43:08,318 INFO L481 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) [2021-02-19 20:43:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12203 transitions. [2021-02-19 20:43:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:08,323 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:08,323 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:08,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-02-19 20:43:08,323 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash -64989464, now seen corresponding path program 120 times [2021-02-19 20:43:08,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:08,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072737550] [2021-02-19 20:43:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:08,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072737550] [2021-02-19 20:43:08,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:08,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:08,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940386782] [2021-02-19 20:43:08,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:08,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:08,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:08,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:08,761 INFO L87 Difference]: Start difference. First operand 3646 states and 12203 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) [2021-02-19 20:43:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:11,749 INFO L93 Difference]: Finished difference Result 4055 states and 13504 transitions. [2021-02-19 20:43:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:43:11,751 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 [2021-02-19 20:43:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:11,762 INFO L225 Difference]: With dead ends: 4055 [2021-02-19 20:43:11,763 INFO L226 Difference]: Without dead ends: 3977 [2021-02-19 20:43:11,763 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:43:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-02-19 20:43:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-02-19 20:43:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.353103448275862) internal successors, (12155), 3625 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12155 transitions. [2021-02-19 20:43:11,823 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12155 transitions. Word has length 39 [2021-02-19 20:43:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:11,823 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12155 transitions. [2021-02-19 20:43:11,823 INFO L481 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) [2021-02-19 20:43:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12155 transitions. [2021-02-19 20:43:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:11,828 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:11,829 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:11,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-02-19 20:43:11,829 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:11,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1981920362, now seen corresponding path program 121 times [2021-02-19 20:43:11,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:11,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010315933] [2021-02-19 20:43:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:12,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010315933] [2021-02-19 20:43:12,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:12,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:12,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955284669] [2021-02-19 20:43:12,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:12,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:12,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:12,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:12,297 INFO L87 Difference]: Start difference. First operand 3626 states and 12155 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) [2021-02-19 20:43:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:15,953 INFO L93 Difference]: Finished difference Result 4269 states and 14190 transitions. [2021-02-19 20:43:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:43:15,955 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 [2021-02-19 20:43:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:15,966 INFO L225 Difference]: With dead ends: 4269 [2021-02-19 20:43:15,966 INFO L226 Difference]: Without dead ends: 4202 [2021-02-19 20:43:15,966 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-02-19 20:43:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-02-19 20:43:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3658. [2021-02-19 20:43:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.347826086956522) internal successors, (12243), 3657 states have internal predecessors, (12243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12243 transitions. [2021-02-19 20:43:16,027 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12243 transitions. Word has length 39 [2021-02-19 20:43:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:16,028 INFO L480 AbstractCegarLoop]: Abstraction has 3658 states and 12243 transitions. [2021-02-19 20:43:16,028 INFO L481 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) [2021-02-19 20:43:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12243 transitions. [2021-02-19 20:43:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:16,033 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:16,033 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:16,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-02-19 20:43:16,033 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:16,033 INFO L82 PathProgramCache]: Analyzing trace with hash 99506280, now seen corresponding path program 122 times [2021-02-19 20:43:16,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:16,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845496582] [2021-02-19 20:43:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:16,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845496582] [2021-02-19 20:43:16,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:16,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:16,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619065028] [2021-02-19 20:43:16,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:16,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:16,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:16,536 INFO L87 Difference]: Start difference. First operand 3658 states and 12243 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) [2021-02-19 20:43:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:21,233 INFO L93 Difference]: Finished difference Result 4406 states and 14547 transitions. [2021-02-19 20:43:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-19 20:43:21,235 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 [2021-02-19 20:43:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:21,247 INFO L225 Difference]: With dead ends: 4406 [2021-02-19 20:43:21,247 INFO L226 Difference]: Without dead ends: 4363 [2021-02-19 20:43:21,248 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-02-19 20:43:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4363 states. [2021-02-19 20:43:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4363 to 3664. [2021-02-19 20:43:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3458913458913457) internal successors, (12256), 3663 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12256 transitions. [2021-02-19 20:43:21,311 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12256 transitions. Word has length 39 [2021-02-19 20:43:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:21,311 INFO L480 AbstractCegarLoop]: Abstraction has 3664 states and 12256 transitions. [2021-02-19 20:43:21,311 INFO L481 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) [2021-02-19 20:43:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12256 transitions. [2021-02-19 20:43:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:21,316 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:21,317 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:21,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-02-19 20:43:21,317 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:21,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1681092022, now seen corresponding path program 123 times [2021-02-19 20:43:21,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:21,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999207862] [2021-02-19 20:43:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:21,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999207862] [2021-02-19 20:43:21,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:21,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:21,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833979759] [2021-02-19 20:43:21,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:21,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:21,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:21,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:21,783 INFO L87 Difference]: Start difference. First operand 3664 states and 12256 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) [2021-02-19 20:43:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:26,018 INFO L93 Difference]: Finished difference Result 4337 states and 14367 transitions. [2021-02-19 20:43:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 20:43:26,020 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 [2021-02-19 20:43:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:26,030 INFO L225 Difference]: With dead ends: 4337 [2021-02-19 20:43:26,030 INFO L226 Difference]: Without dead ends: 4273 [2021-02-19 20:43:26,031 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-02-19 20:43:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2021-02-19 20:43:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 3646. [2021-02-19 20:43:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3506172839506174) internal successors, (12213), 3645 states have internal predecessors, (12213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12213 transitions. [2021-02-19 20:43:26,087 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12213 transitions. Word has length 39 [2021-02-19 20:43:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:26,087 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12213 transitions. [2021-02-19 20:43:26,087 INFO L481 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) [2021-02-19 20:43:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12213 transitions. [2021-02-19 20:43:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:26,092 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:26,092 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:26,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-02-19 20:43:26,092 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash -118631844, now seen corresponding path program 124 times [2021-02-19 20:43:26,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:26,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977786596] [2021-02-19 20:43:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:26,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977786596] [2021-02-19 20:43:26,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:26,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:26,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62184003] [2021-02-19 20:43:26,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:26,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:26,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:26,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:26,552 INFO L87 Difference]: Start difference. First operand 3646 states and 12213 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) [2021-02-19 20:43:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:29,563 INFO L93 Difference]: Finished difference Result 4217 states and 14012 transitions. [2021-02-19 20:43:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:43:29,565 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 [2021-02-19 20:43:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:29,574 INFO L225 Difference]: With dead ends: 4217 [2021-02-19 20:43:29,575 INFO L226 Difference]: Without dead ends: 4150 [2021-02-19 20:43:29,575 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:43:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2021-02-19 20:43:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 3654. [2021-02-19 20:43:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3476594579797427) internal successors, (12229), 3653 states have internal predecessors, (12229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12229 transitions. [2021-02-19 20:43:29,630 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12229 transitions. Word has length 39 [2021-02-19 20:43:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:29,630 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 12229 transitions. [2021-02-19 20:43:29,630 INFO L481 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) [2021-02-19 20:43:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12229 transitions. [2021-02-19 20:43:29,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:29,636 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:29,636 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:29,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-02-19 20:43:29,636 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:29,636 INFO L82 PathProgramCache]: Analyzing trace with hash -290775062, now seen corresponding path program 125 times [2021-02-19 20:43:29,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:29,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92441623] [2021-02-19 20:43:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:30,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92441623] [2021-02-19 20:43:30,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:30,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:30,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130943155] [2021-02-19 20:43:30,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:30,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:30,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:30,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:30,114 INFO L87 Difference]: Start difference. First operand 3654 states and 12229 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) [2021-02-19 20:43:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:33,539 INFO L93 Difference]: Finished difference Result 4205 states and 13972 transitions. [2021-02-19 20:43:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:43:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:43:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:33,551 INFO L225 Difference]: With dead ends: 4205 [2021-02-19 20:43:33,551 INFO L226 Difference]: Without dead ends: 4142 [2021-02-19 20:43:33,551 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:43:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-02-19 20:43:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3646. [2021-02-19 20:43:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-02-19 20:43:33,607 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-02-19 20:43:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:33,607 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-02-19 20:43:33,607 INFO L481 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) [2021-02-19 20:43:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-02-19 20:43:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:33,612 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:33,612 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:33,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-02-19 20:43:33,612 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1326931062, now seen corresponding path program 126 times [2021-02-19 20:43:33,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:33,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85919377] [2021-02-19 20:43:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:34,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85919377] [2021-02-19 20:43:34,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:34,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:34,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103762070] [2021-02-19 20:43:34,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:34,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:34,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:34,112 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-02-19 20:43:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:38,266 INFO L93 Difference]: Finished difference Result 4360 states and 14335 transitions. [2021-02-19 20:43:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:43:38,268 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 [2021-02-19 20:43:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:38,278 INFO L225 Difference]: With dead ends: 4360 [2021-02-19 20:43:38,278 INFO L226 Difference]: Without dead ends: 4317 [2021-02-19 20:43:38,279 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:43:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-02-19 20:43:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 3654. [2021-02-19 20:43:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3476594579797427) internal successors, (12229), 3653 states have internal predecessors, (12229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12229 transitions. [2021-02-19 20:43:38,335 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12229 transitions. Word has length 39 [2021-02-19 20:43:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:38,335 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 12229 transitions. [2021-02-19 20:43:38,335 INFO L481 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) [2021-02-19 20:43:38,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12229 transitions. [2021-02-19 20:43:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:38,340 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:38,340 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:38,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-02-19 20:43:38,340 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:38,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1187437932, now seen corresponding path program 127 times [2021-02-19 20:43:38,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:38,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503964409] [2021-02-19 20:43:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:38,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503964409] [2021-02-19 20:43:38,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:38,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:38,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378675614] [2021-02-19 20:43:38,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:38,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:38,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:38,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:38,815 INFO L87 Difference]: Start difference. First operand 3654 states and 12229 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) [2021-02-19 20:43:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:43,017 INFO L93 Difference]: Finished difference Result 4348 states and 14297 transitions. [2021-02-19 20:43:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-19 20:43:43,020 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 [2021-02-19 20:43:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:43,030 INFO L225 Difference]: With dead ends: 4348 [2021-02-19 20:43:43,030 INFO L226 Difference]: Without dead ends: 4296 [2021-02-19 20:43:43,031 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:43:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-02-19 20:43:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3646. [2021-02-19 20:43:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-02-19 20:43:43,088 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-02-19 20:43:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:43,088 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-02-19 20:43:43,088 INFO L481 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) [2021-02-19 20:43:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-02-19 20:43:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:43,093 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:43,094 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:43,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-02-19 20:43:43,094 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:43,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:43,095 INFO L82 PathProgramCache]: Analyzing trace with hash -408447492, now seen corresponding path program 128 times [2021-02-19 20:43:43,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:43,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423058824] [2021-02-19 20:43:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:43,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423058824] [2021-02-19 20:43:43,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:43,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911002985] [2021-02-19 20:43:43,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:43,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:43,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:43,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:43,626 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-02-19 20:43:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:47,296 INFO L93 Difference]: Finished difference Result 4325 states and 14220 transitions. [2021-02-19 20:43:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 20:43:47,299 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 [2021-02-19 20:43:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:47,309 INFO L225 Difference]: With dead ends: 4325 [2021-02-19 20:43:47,309 INFO L226 Difference]: Without dead ends: 4270 [2021-02-19 20:43:47,310 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:43:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-02-19 20:43:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3648. [2021-02-19 20:43:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.348505621058404) internal successors, (12212), 3647 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12212 transitions. [2021-02-19 20:43:47,369 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12212 transitions. Word has length 39 [2021-02-19 20:43:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:47,369 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12212 transitions. [2021-02-19 20:43:47,369 INFO L481 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) [2021-02-19 20:43:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12212 transitions. [2021-02-19 20:43:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:47,374 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:47,374 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:47,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-02-19 20:43:47,374 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash 764204730, now seen corresponding path program 129 times [2021-02-19 20:43:47,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:47,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283684494] [2021-02-19 20:43:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:47,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283684494] [2021-02-19 20:43:47,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:47,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:47,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382620759] [2021-02-19 20:43:47,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:47,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:47,870 INFO L87 Difference]: Start difference. First operand 3648 states and 12212 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) [2021-02-19 20:43:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:51,217 INFO L93 Difference]: Finished difference Result 4260 states and 14068 transitions. [2021-02-19 20:43:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:43:51,219 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 [2021-02-19 20:43:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:51,229 INFO L225 Difference]: With dead ends: 4260 [2021-02-19 20:43:51,229 INFO L226 Difference]: Without dead ends: 4214 [2021-02-19 20:43:51,230 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:43:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2021-02-19 20:43:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 3652. [2021-02-19 20:43:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-02-19 20:43:51,287 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-02-19 20:43:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:51,287 INFO L480 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-02-19 20:43:51,287 INFO L481 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) [2021-02-19 20:43:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-02-19 20:43:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:51,293 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:51,293 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:51,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-02-19 20:43:51,293 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash 516738568, now seen corresponding path program 130 times [2021-02-19 20:43:51,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:51,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830579128] [2021-02-19 20:43:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:51,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830579128] [2021-02-19 20:43:51,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:51,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:51,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764157479] [2021-02-19 20:43:51,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:51,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:51,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:51,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:51,820 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:43:55,994 INFO L93 Difference]: Finished difference Result 4252 states and 14081 transitions. [2021-02-19 20:43:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:43:55,996 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 [2021-02-19 20:43:55,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:43:56,007 INFO L225 Difference]: With dead ends: 4252 [2021-02-19 20:43:56,007 INFO L226 Difference]: Without dead ends: 4203 [2021-02-19 20:43:56,007 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:43:56,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2021-02-19 20:43:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 3642. [2021-02-19 20:43:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3504531722054383) internal successors, (12199), 3641 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:43:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12199 transitions. [2021-02-19 20:43:56,093 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12199 transitions. Word has length 39 [2021-02-19 20:43:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:43:56,093 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12199 transitions. [2021-02-19 20:43:56,093 INFO L481 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) [2021-02-19 20:43:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12199 transitions. [2021-02-19 20:43:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:43:56,098 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:43:56,098 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:43:56,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-02-19 20:43:56,098 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:43:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:43:56,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1220124744, now seen corresponding path program 131 times [2021-02-19 20:43:56,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:43:56,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471001890] [2021-02-19 20:43:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:43:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:43:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:43:56,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471001890] [2021-02-19 20:43:56,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:43:56,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:43:56,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429873836] [2021-02-19 20:43:56,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:43:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:43:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:43:56,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:43:56,634 INFO L87 Difference]: Start difference. First operand 3642 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:00,063 INFO L93 Difference]: Finished difference Result 4189 states and 13952 transitions. [2021-02-19 20:44:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-19 20:44:00,066 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 [2021-02-19 20:44:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:00,076 INFO L225 Difference]: With dead ends: 4189 [2021-02-19 20:44:00,076 INFO L226 Difference]: Without dead ends: 4122 [2021-02-19 20:44:00,077 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:44:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2021-02-19 20:44:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3682. [2021-02-19 20:44:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 3.343384949741918) internal successors, (12307), 3681 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 12307 transitions. [2021-02-19 20:44:00,134 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 12307 transitions. Word has length 39 [2021-02-19 20:44:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:00,134 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 12307 transitions. [2021-02-19 20:44:00,134 INFO L481 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) [2021-02-19 20:44:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 12307 transitions. [2021-02-19 20:44:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:00,139 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:00,139 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:00,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-02-19 20:44:00,139 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1047981526, now seen corresponding path program 132 times [2021-02-19 20:44:00,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:00,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185149722] [2021-02-19 20:44:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:00,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185149722] [2021-02-19 20:44:00,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:00,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:00,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667436796] [2021-02-19 20:44:00,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:00,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:00,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:00,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:00,696 INFO L87 Difference]: Start difference. First operand 3682 states and 12307 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) [2021-02-19 20:44:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:04,164 INFO L93 Difference]: Finished difference Result 4177 states and 13912 transitions. [2021-02-19 20:44:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:44:04,166 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 [2021-02-19 20:44:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:04,174 INFO L225 Difference]: With dead ends: 4177 [2021-02-19 20:44:04,174 INFO L226 Difference]: Without dead ends: 4114 [2021-02-19 20:44:04,174 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:44:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-02-19 20:44:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 3674. [2021-02-19 20:44:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3441328614211816) internal successors, (12283), 3673 states have internal predecessors, (12283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12283 transitions. [2021-02-19 20:44:04,224 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12283 transitions. Word has length 39 [2021-02-19 20:44:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:04,224 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 12283 transitions. [2021-02-19 20:44:04,224 INFO L481 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) [2021-02-19 20:44:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12283 transitions. [2021-02-19 20:44:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:04,229 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:04,229 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:04,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-02-19 20:44:04,229 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:04,229 INFO L82 PathProgramCache]: Analyzing trace with hash -754852630, now seen corresponding path program 133 times [2021-02-19 20:44:04,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:04,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511682386] [2021-02-19 20:44:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:04,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511682386] [2021-02-19 20:44:04,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:04,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:04,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111179346] [2021-02-19 20:44:04,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:04,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:04,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:04,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:04,718 INFO L87 Difference]: Start difference. First operand 3674 states and 12283 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) [2021-02-19 20:44:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:07,576 INFO L93 Difference]: Finished difference Result 4177 states and 13904 transitions. [2021-02-19 20:44:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:44:07,578 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 [2021-02-19 20:44:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:07,585 INFO L225 Difference]: With dead ends: 4177 [2021-02-19 20:44:07,585 INFO L226 Difference]: Without dead ends: 4038 [2021-02-19 20:44:07,585 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-02-19 20:44:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-02-19 20:44:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3626. [2021-02-19 20:44:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.348689655172414) internal successors, (12139), 3625 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-02-19 20:44:07,630 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-02-19 20:44:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:07,630 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-02-19 20:44:07,631 INFO L481 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) [2021-02-19 20:44:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-02-19 20:44:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:07,634 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:07,634 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:07,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-02-19 20:44:07,634 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:07,635 INFO L82 PathProgramCache]: Analyzing trace with hash 124675624, now seen corresponding path program 134 times [2021-02-19 20:44:07,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:07,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384631520] [2021-02-19 20:44:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:08,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384631520] [2021-02-19 20:44:08,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:08,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:08,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605774537] [2021-02-19 20:44:08,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:08,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:08,036 INFO L87 Difference]: Start difference. First operand 3626 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:11,937 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-02-19 20:44:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-19 20:44:11,938 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 [2021-02-19 20:44:11,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:11,945 INFO L225 Difference]: With dead ends: 4276 [2021-02-19 20:44:11,945 INFO L226 Difference]: Without dead ends: 4170 [2021-02-19 20:44:11,946 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:44:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-02-19 20:44:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-02-19 20:44:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-02-19 20:44:11,993 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-02-19 20:44:11,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:11,993 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-02-19 20:44:11,993 INFO L481 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) [2021-02-19 20:44:11,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-02-19 20:44:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:11,997 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:11,997 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:11,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-02-19 20:44:11,997 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:11,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1370215276, now seen corresponding path program 135 times [2021-02-19 20:44:11,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:11,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275644455] [2021-02-19 20:44:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:12,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275644455] [2021-02-19 20:44:12,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:12,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:12,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173130970] [2021-02-19 20:44:12,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:12,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:12,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:12,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:12,423 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:16,117 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-02-19 20:44:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:44:16,119 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 [2021-02-19 20:44:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:16,126 INFO L225 Difference]: With dead ends: 4285 [2021-02-19 20:44:16,126 INFO L226 Difference]: Without dead ends: 4221 [2021-02-19 20:44:16,127 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:44:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-02-19 20:44:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-02-19 20:44:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-02-19 20:44:16,197 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-02-19 20:44:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:16,197 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-02-19 20:44:16,197 INFO L481 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) [2021-02-19 20:44:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-02-19 20:44:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:16,201 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:16,201 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:16,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-02-19 20:44:16,201 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash -451731706, now seen corresponding path program 136 times [2021-02-19 20:44:16,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:16,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268942596] [2021-02-19 20:44:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:16,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268942596] [2021-02-19 20:44:16,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:16,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:16,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060293226] [2021-02-19 20:44:16,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:16,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:16,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:16,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:16,655 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:19,371 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-02-19 20:44:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:44:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:44:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:19,380 INFO L225 Difference]: With dead ends: 4182 [2021-02-19 20:44:19,380 INFO L226 Difference]: Without dead ends: 4139 [2021-02-19 20:44:19,380 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:44:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-02-19 20:44:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-02-19 20:44:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.344666849465314) internal successors, (12198), 3647 states have internal predecessors, (12198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-02-19 20:44:19,427 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-02-19 20:44:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:19,427 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-02-19 20:44:19,429 INFO L481 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) [2021-02-19 20:44:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-02-19 20:44:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:19,434 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:19,434 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:19,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-02-19 20:44:19,434 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:19,434 INFO L82 PathProgramCache]: Analyzing trace with hash -431582972, now seen corresponding path program 137 times [2021-02-19 20:44:19,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:19,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730763854] [2021-02-19 20:44:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:19,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730763854] [2021-02-19 20:44:19,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:19,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:19,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393227497] [2021-02-19 20:44:19,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:19,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:19,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:19,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:19,857 INFO L87 Difference]: Start difference. First operand 3648 states and 12198 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:22,841 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-02-19 20:44:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 20:44:22,843 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 [2021-02-19 20:44:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:22,849 INFO L225 Difference]: With dead ends: 4151 [2021-02-19 20:44:22,850 INFO L226 Difference]: Without dead ends: 4108 [2021-02-19 20:44:22,850 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:44:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-02-19 20:44:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-02-19 20:44:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3455942904199834) internal successors, (12188), 3643 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-02-19 20:44:22,896 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-02-19 20:44:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:22,896 INFO L480 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-02-19 20:44:22,896 INFO L481 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) [2021-02-19 20:44:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-02-19 20:44:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:22,900 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:22,900 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:22,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-02-19 20:44:22,900 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash 720920516, now seen corresponding path program 138 times [2021-02-19 20:44:22,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:22,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687324227] [2021-02-19 20:44:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:23,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687324227] [2021-02-19 20:44:23,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:23,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:23,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688439641] [2021-02-19 20:44:23,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:23,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:23,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:23,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:23,333 INFO L87 Difference]: Start difference. First operand 3644 states and 12188 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:26,072 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-02-19 20:44:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 20:44:26,074 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 [2021-02-19 20:44:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:26,080 INFO L225 Difference]: With dead ends: 4160 [2021-02-19 20:44:26,080 INFO L226 Difference]: Without dead ends: 4100 [2021-02-19 20:44:26,080 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:44:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-02-19 20:44:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-02-19 20:44:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3460587750617963) internal successors, (12183), 3641 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-02-19 20:44:26,124 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-02-19 20:44:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:26,124 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-02-19 20:44:26,124 INFO L481 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) [2021-02-19 20:44:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-02-19 20:44:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:26,127 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:26,128 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:26,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-02-19 20:44:26,128 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1358646026, now seen corresponding path program 139 times [2021-02-19 20:44:26,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:26,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120926022] [2021-02-19 20:44:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:26,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120926022] [2021-02-19 20:44:26,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:26,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:44:26,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369226121] [2021-02-19 20:44:26,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:44:26,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:26,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:44:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:44:26,505 INFO L87 Difference]: Start difference. First operand 3642 states and 12183 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:28,913 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-02-19 20:44:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:44:28,915 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 [2021-02-19 20:44:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:28,921 INFO L225 Difference]: With dead ends: 4128 [2021-02-19 20:44:28,921 INFO L226 Difference]: Without dead ends: 4052 [2021-02-19 20:44:28,921 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 20:44:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-02-19 20:44:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-02-19 20:44:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3431077007399286) internal successors, (12199), 3649 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-02-19 20:44:28,967 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-02-19 20:44:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:28,967 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-02-19 20:44:28,967 INFO L481 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) [2021-02-19 20:44:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-02-19 20:44:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:28,971 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:28,971 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:28,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-02-19 20:44:28,971 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1918267658, now seen corresponding path program 140 times [2021-02-19 20:44:28,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:28,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356047641] [2021-02-19 20:44:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:29,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356047641] [2021-02-19 20:44:29,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:29,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:29,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491418759] [2021-02-19 20:44:29,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:29,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:29,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:29,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:29,443 INFO L87 Difference]: Start difference. First operand 3650 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:32,164 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-02-19 20:44:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:44:32,166 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 [2021-02-19 20:44:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:32,173 INFO L225 Difference]: With dead ends: 4110 [2021-02-19 20:44:32,173 INFO L226 Difference]: Without dead ends: 4040 [2021-02-19 20:44:32,173 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:44:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-02-19 20:44:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-02-19 20:44:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-02-19 20:44:32,222 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-02-19 20:44:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:32,222 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-02-19 20:44:32,222 INFO L481 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) [2021-02-19 20:44:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-02-19 20:44:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:32,226 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:32,226 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:32,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-02-19 20:44:32,227 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1239076326, now seen corresponding path program 141 times [2021-02-19 20:44:32,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:32,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331673631] [2021-02-19 20:44:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:32,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331673631] [2021-02-19 20:44:32,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:32,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:44:32,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356141281] [2021-02-19 20:44:32,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:44:32,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:44:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:44:32,653 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:34,933 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-02-19 20:44:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-19 20:44:34,936 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 [2021-02-19 20:44:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:34,944 INFO L225 Difference]: With dead ends: 4059 [2021-02-19 20:44:34,944 INFO L226 Difference]: Without dead ends: 3983 [2021-02-19 20:44:34,945 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-02-19 20:44:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-02-19 20:44:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-02-19 20:44:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.341237394385391) internal successors, (12259), 3669 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-02-19 20:44:34,997 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-02-19 20:44:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:34,998 INFO L480 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-02-19 20:44:34,998 INFO L481 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) [2021-02-19 20:44:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-02-19 20:44:35,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:35,003 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:35,003 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:35,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-02-19 20:44:35,003 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:35,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:35,003 INFO L82 PathProgramCache]: Analyzing trace with hash 221022714, now seen corresponding path program 142 times [2021-02-19 20:44:35,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:35,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608133852] [2021-02-19 20:44:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:35,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608133852] [2021-02-19 20:44:35,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:35,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:35,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087546776] [2021-02-19 20:44:35,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:35,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:35,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:35,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:35,434 INFO L87 Difference]: Start difference. First operand 3670 states and 12259 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:37,962 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-02-19 20:44:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-19 20:44:37,964 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 [2021-02-19 20:44:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:37,971 INFO L225 Difference]: With dead ends: 4041 [2021-02-19 20:44:37,971 INFO L226 Difference]: Without dead ends: 3975 [2021-02-19 20:44:37,971 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:44:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-02-19 20:44:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-02-19 20:44:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-02-19 20:44:38,017 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-02-19 20:44:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:38,017 INFO L480 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-02-19 20:44:38,017 INFO L481 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) [2021-02-19 20:44:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-02-19 20:44:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:38,020 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:38,021 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:38,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-02-19 20:44:38,021 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:38,021 INFO L82 PathProgramCache]: Analyzing trace with hash -61242940, now seen corresponding path program 143 times [2021-02-19 20:44:38,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:38,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867438242] [2021-02-19 20:44:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:38,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867438242] [2021-02-19 20:44:38,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:38,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:44:38,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040830585] [2021-02-19 20:44:38,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:44:38,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:38,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:44:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:44:38,462 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:41,106 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-02-19 20:44:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-19 20:44:41,108 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 [2021-02-19 20:44:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:41,114 INFO L225 Difference]: With dead ends: 4050 [2021-02-19 20:44:41,114 INFO L226 Difference]: Without dead ends: 3888 [2021-02-19 20:44:41,114 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 20:44:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-02-19 20:44:41,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-02-19 20:44:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3529084330642918) internal successors, (12047), 3593 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-02-19 20:44:41,158 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-02-19 20:44:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:41,159 INFO L480 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-02-19 20:44:41,159 INFO L481 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) [2021-02-19 20:44:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-02-19 20:44:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:41,162 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:41,162 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:41,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-02-19 20:44:41,162 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:41,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:41,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2060041432, now seen corresponding path program 144 times [2021-02-19 20:44:41,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:41,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348630469] [2021-02-19 20:44:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:41,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348630469] [2021-02-19 20:44:41,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:41,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:44:41,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599712594] [2021-02-19 20:44:41,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:44:41,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:41,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:44:41,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:44:41,662 INFO L87 Difference]: Start difference. First operand 3594 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:45,513 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-02-19 20:44:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 20:44:45,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:44:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:45,522 INFO L225 Difference]: With dead ends: 4277 [2021-02-19 20:44:45,522 INFO L226 Difference]: Without dead ends: 4210 [2021-02-19 20:44:45,522 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:44:45,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-02-19 20:44:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-02-19 20:44:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-02-19 20:44:45,567 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-02-19 20:44:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:45,567 INFO L480 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-02-19 20:44:45,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-02-19 20:44:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:45,571 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:45,571 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:45,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-02-19 20:44:45,571 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:45,571 INFO L82 PathProgramCache]: Analyzing trace with hash 177627350, now seen corresponding path program 145 times [2021-02-19 20:44:45,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:45,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536603339] [2021-02-19 20:44:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:46,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536603339] [2021-02-19 20:44:46,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:46,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:44:46,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34947880] [2021-02-19 20:44:46,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:44:46,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:44:46,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:44:46,072 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:50,996 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-02-19 20:44:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-02-19 20:44:50,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:44:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:51,004 INFO L225 Difference]: With dead ends: 4414 [2021-02-19 20:44:51,005 INFO L226 Difference]: Without dead ends: 4371 [2021-02-19 20:44:51,005 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-02-19 20:44:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-02-19 20:44:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-02-19 20:44:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.345091605140826) internal successors, (12233), 3657 states have internal predecessors, (12233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-02-19 20:44:51,053 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-02-19 20:44:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:51,053 INFO L480 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-02-19 20:44:51,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-02-19 20:44:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:51,057 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:51,057 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:51,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-02-19 20:44:51,057 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1602970952, now seen corresponding path program 146 times [2021-02-19 20:44:51,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:51,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101907704] [2021-02-19 20:44:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:51,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101907704] [2021-02-19 20:44:51,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:51,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:44:51,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881867088] [2021-02-19 20:44:51,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:44:51,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:51,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:44:51,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:44:51,586 INFO L87 Difference]: Start difference. First operand 3658 states and 12233 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:44:56,486 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-02-19 20:44:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-19 20:44:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:44:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:44:56,495 INFO L225 Difference]: With dead ends: 4345 [2021-02-19 20:44:56,495 INFO L226 Difference]: Without dead ends: 4281 [2021-02-19 20:44:56,496 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-02-19 20:44:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-02-19 20:44:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-02-19 20:44:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3498213794998626) internal successors, (12190), 3639 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-02-19 20:44:56,542 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-02-19 20:44:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:44:56,542 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-02-19 20:44:56,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:44:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-02-19 20:44:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:44:56,545 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:44:56,545 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:44:56,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-02-19 20:44:56,546 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:44:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:44:56,546 INFO L82 PathProgramCache]: Analyzing trace with hash -40510774, now seen corresponding path program 147 times [2021-02-19 20:44:56,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:44:56,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834306617] [2021-02-19 20:44:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:44:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:44:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:44:57,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834306617] [2021-02-19 20:44:57,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:44:57,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:44:57,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85807475] [2021-02-19 20:44:57,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:44:57,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:44:57,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:44:57,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:44:57,075 INFO L87 Difference]: Start difference. First operand 3640 states and 12190 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:00,711 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-02-19 20:45:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:45:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:00,720 INFO L225 Difference]: With dead ends: 4245 [2021-02-19 20:45:00,721 INFO L226 Difference]: Without dead ends: 4178 [2021-02-19 20:45:00,721 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:45:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-02-19 20:45:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-02-19 20:45:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-02-19 20:45:00,773 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-02-19 20:45:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:00,774 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-02-19 20:45:00,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-02-19 20:45:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:00,778 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:00,778 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:00,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-02-19 20:45:00,778 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash -212653992, now seen corresponding path program 148 times [2021-02-19 20:45:00,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:00,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441580810] [2021-02-19 20:45:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:01,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441580810] [2021-02-19 20:45:01,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:01,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:01,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528931154] [2021-02-19 20:45:01,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:01,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:01,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:01,407 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:05,428 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-02-19 20:45:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-19 20:45:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:05,437 INFO L225 Difference]: With dead ends: 4233 [2021-02-19 20:45:05,437 INFO L226 Difference]: Without dead ends: 4170 [2021-02-19 20:45:05,437 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:45:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-02-19 20:45:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-02-19 20:45:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-02-19 20:45:05,484 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-02-19 20:45:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:05,484 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-02-19 20:45:05,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-02-19 20:45:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:05,488 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:05,488 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:05,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-02-19 20:45:05,488 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1248809992, now seen corresponding path program 149 times [2021-02-19 20:45:05,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:05,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134149959] [2021-02-19 20:45:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:06,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134149959] [2021-02-19 20:45:06,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:06,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:06,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049116677] [2021-02-19 20:45:06,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:06,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:06,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:06,065 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:10,895 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-02-19 20:45:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-02-19 20:45:10,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:10,904 INFO L225 Difference]: With dead ends: 4396 [2021-02-19 20:45:10,905 INFO L226 Difference]: Without dead ends: 4353 [2021-02-19 20:45:10,905 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-02-19 20:45:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-02-19 20:45:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-02-19 20:45:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-02-19 20:45:10,952 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-02-19 20:45:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:10,952 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-02-19 20:45:10,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-02-19 20:45:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:10,956 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:10,956 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:10,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-02-19 20:45:10,956 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1265559002, now seen corresponding path program 150 times [2021-02-19 20:45:10,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:10,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325521798] [2021-02-19 20:45:10,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:11,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325521798] [2021-02-19 20:45:11,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:11,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:11,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531463294] [2021-02-19 20:45:11,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:11,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:11,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:11,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:11,532 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:16,389 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-02-19 20:45:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-19 20:45:16,392 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 [2021-02-19 20:45:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:16,420 INFO L225 Difference]: With dead ends: 4384 [2021-02-19 20:45:16,420 INFO L226 Difference]: Without dead ends: 4332 [2021-02-19 20:45:16,420 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-02-19 20:45:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-02-19 20:45:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-02-19 20:45:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-02-19 20:45:16,471 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-02-19 20:45:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:16,471 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-02-19 20:45:16,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-02-19 20:45:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:16,475 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:16,475 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:16,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-02-19 20:45:16,475 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:16,475 INFO L82 PathProgramCache]: Analyzing trace with hash -330326422, now seen corresponding path program 151 times [2021-02-19 20:45:16,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:16,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159442231] [2021-02-19 20:45:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:17,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159442231] [2021-02-19 20:45:17,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:17,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:17,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803124220] [2021-02-19 20:45:17,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:17,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:17,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:17,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:17,076 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:21,150 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-02-19 20:45:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:45:21,152 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 [2021-02-19 20:45:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:21,159 INFO L225 Difference]: With dead ends: 4361 [2021-02-19 20:45:21,159 INFO L226 Difference]: Without dead ends: 4306 [2021-02-19 20:45:21,160 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-02-19 20:45:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-02-19 20:45:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-02-19 20:45:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.347706673990662) internal successors, (12189), 3641 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-02-19 20:45:21,206 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-02-19 20:45:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:21,207 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-02-19 20:45:21,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-02-19 20:45:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:21,210 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:21,210 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:21,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-02-19 20:45:21,211 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:21,211 INFO L82 PathProgramCache]: Analyzing trace with hash 842325800, now seen corresponding path program 152 times [2021-02-19 20:45:21,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:21,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537692862] [2021-02-19 20:45:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:21,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537692862] [2021-02-19 20:45:21,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:21,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:21,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195195940] [2021-02-19 20:45:21,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:21,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:21,797 INFO L87 Difference]: Start difference. First operand 3642 states and 12189 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:25,749 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-02-19 20:45:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:45:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:25,758 INFO L225 Difference]: With dead ends: 4296 [2021-02-19 20:45:25,758 INFO L226 Difference]: Without dead ends: 4250 [2021-02-19 20:45:25,759 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:45:25,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-02-19 20:45:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-02-19 20:45:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3462277091906723) internal successors, (12197), 3645 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-02-19 20:45:25,805 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-02-19 20:45:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:25,805 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-02-19 20:45:25,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-02-19 20:45:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:25,809 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:25,809 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:25,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-02-19 20:45:25,809 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash 594859638, now seen corresponding path program 153 times [2021-02-19 20:45:25,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:25,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459870635] [2021-02-19 20:45:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:26,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459870635] [2021-02-19 20:45:26,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:26,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:26,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471667279] [2021-02-19 20:45:26,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:26,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:26,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:26,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:26,391 INFO L87 Difference]: Start difference. First operand 3646 states and 12197 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:30,327 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-02-19 20:45:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:45:30,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:30,336 INFO L225 Difference]: With dead ends: 4256 [2021-02-19 20:45:30,336 INFO L226 Difference]: Without dead ends: 4207 [2021-02-19 20:45:30,336 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 20:45:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-02-19 20:45:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-02-19 20:45:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 3.3485557083906463) internal successors, (12172), 3635 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-02-19 20:45:30,382 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-02-19 20:45:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:30,382 INFO L480 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-02-19 20:45:30,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-02-19 20:45:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:30,385 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:30,386 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:30,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-02-19 20:45:30,386 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1298245814, now seen corresponding path program 154 times [2021-02-19 20:45:30,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:30,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738643378] [2021-02-19 20:45:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:30,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738643378] [2021-02-19 20:45:30,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:30,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:30,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294873602] [2021-02-19 20:45:30,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:30,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:30,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:30,946 INFO L87 Difference]: Start difference. First operand 3636 states and 12172 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:34,695 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-02-19 20:45:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:45:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:34,704 INFO L225 Difference]: With dead ends: 4279 [2021-02-19 20:45:34,704 INFO L226 Difference]: Without dead ends: 4212 [2021-02-19 20:45:34,704 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:45:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-02-19 20:45:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-02-19 20:45:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3414965986394556) internal successors, (12280), 3675 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-02-19 20:45:34,749 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-02-19 20:45:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:34,749 INFO L480 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-02-19 20:45:34,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-02-19 20:45:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:34,753 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:34,753 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:34,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-02-19 20:45:34,753 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:34,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1126102596, now seen corresponding path program 155 times [2021-02-19 20:45:34,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:34,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163211136] [2021-02-19 20:45:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163211136] [2021-02-19 20:45:35,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:35,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:35,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637518205] [2021-02-19 20:45:35,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:35,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:35,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:35,319 INFO L87 Difference]: Start difference. First operand 3676 states and 12280 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:39,136 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-02-19 20:45:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:45:39,138 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 [2021-02-19 20:45:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:39,145 INFO L225 Difference]: With dead ends: 4267 [2021-02-19 20:45:39,145 INFO L226 Difference]: Without dead ends: 4204 [2021-02-19 20:45:39,145 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:45:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-02-19 20:45:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-02-19 20:45:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.342241614398691) internal successors, (12256), 3667 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-02-19 20:45:39,189 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-02-19 20:45:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:39,189 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-02-19 20:45:39,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-02-19 20:45:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:39,192 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:39,192 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:39,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-02-19 20:45:39,193 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:39,193 INFO L82 PathProgramCache]: Analyzing trace with hash -676731560, now seen corresponding path program 156 times [2021-02-19 20:45:39,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:39,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379897171] [2021-02-19 20:45:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:39,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379897171] [2021-02-19 20:45:39,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:39,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:39,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861590547] [2021-02-19 20:45:39,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:39,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:39,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:39,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:39,776 INFO L87 Difference]: Start difference. First operand 3668 states and 12256 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:43,724 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-02-19 20:45:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:45:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:43,733 INFO L225 Difference]: With dead ends: 4279 [2021-02-19 20:45:43,733 INFO L226 Difference]: Without dead ends: 4140 [2021-02-19 20:45:43,734 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:45:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-02-19 20:45:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-02-19 20:45:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.34716459197787) internal successors, (12100), 3615 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-02-19 20:45:43,778 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-02-19 20:45:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:43,778 INFO L480 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-02-19 20:45:43,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-02-19 20:45:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:43,782 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:43,782 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:43,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-02-19 20:45:43,782 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:43,782 INFO L82 PathProgramCache]: Analyzing trace with hash 95311942, now seen corresponding path program 157 times [2021-02-19 20:45:43,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:43,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891902795] [2021-02-19 20:45:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:44,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891902795] [2021-02-19 20:45:44,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:44,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:44,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66526545] [2021-02-19 20:45:44,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:44,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:44,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:44,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:44,372 INFO L87 Difference]: Start difference. First operand 3616 states and 12100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:47,686 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-02-19 20:45:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:45:47,688 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 [2021-02-19 20:45:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:47,694 INFO L225 Difference]: With dead ends: 4091 [2021-02-19 20:45:47,694 INFO L226 Difference]: Without dead ends: 4024 [2021-02-19 20:45:47,695 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:45:47,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-02-19 20:45:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-02-19 20:45:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3367875647668392) internal successors, (12236), 3667 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-02-19 20:45:47,739 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-02-19 20:45:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:47,739 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-02-19 20:45:47,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-02-19 20:45:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:47,742 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:47,742 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:47,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-02-19 20:45:47,742 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:47,743 INFO L82 PathProgramCache]: Analyzing trace with hash -76831276, now seen corresponding path program 158 times [2021-02-19 20:45:47,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:47,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990214983] [2021-02-19 20:45:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:48,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990214983] [2021-02-19 20:45:48,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:48,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:48,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305012525] [2021-02-19 20:45:48,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:48,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:48,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:48,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:48,318 INFO L87 Difference]: Start difference. First operand 3668 states and 12236 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:51,876 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-02-19 20:45:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:45:51,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:51,885 INFO L225 Difference]: With dead ends: 4079 [2021-02-19 20:45:51,885 INFO L226 Difference]: Without dead ends: 4016 [2021-02-19 20:45:51,885 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:45:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-02-19 20:45:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-02-19 20:45:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.337523913637606) internal successors, (12212), 3659 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-02-19 20:45:51,929 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-02-19 20:45:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:51,929 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-02-19 20:45:51,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-02-19 20:45:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:51,933 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:51,933 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:51,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-02-19 20:45:51,933 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:51,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1879665432, now seen corresponding path program 159 times [2021-02-19 20:45:51,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:51,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83749669] [2021-02-19 20:45:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:52,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83749669] [2021-02-19 20:45:52,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:52,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-19 20:45:52,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133846611] [2021-02-19 20:45:52,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:45:52,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:52,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:45:52,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:45:52,542 INFO L87 Difference]: Start difference. First operand 3660 states and 12212 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:55,920 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-02-19 20:45:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-19 20:45:55,922 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:45:55,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:55,928 INFO L225 Difference]: With dead ends: 4079 [2021-02-19 20:45:55,928 INFO L226 Difference]: Without dead ends: 3936 [2021-02-19 20:45:55,929 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:45:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-02-19 20:45:55,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-02-19 20:45:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3607 states have (on average 3.349043526476296) internal successors, (12080), 3607 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-02-19 20:45:55,972 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-02-19 20:45:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:55,972 INFO L480 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-02-19 20:45:55,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-02-19 20:45:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:55,976 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:55,976 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:55,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-02-19 20:45:55,976 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:55,976 INFO L82 PathProgramCache]: Analyzing trace with hash -690327770, now seen corresponding path program 160 times [2021-02-19 20:45:55,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:55,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775230806] [2021-02-19 20:45:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:45:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:45:56,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775230806] [2021-02-19 20:45:56,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:45:56,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:45:56,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583386986] [2021-02-19 20:45:56,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:45:56,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:45:56,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:45:56,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:45:56,457 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 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) [2021-02-19 20:45:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:45:59,890 INFO L93 Difference]: Finished difference Result 4099 states and 13671 transitions. [2021-02-19 20:45:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:45:59,893 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 [2021-02-19 20:45:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:45:59,899 INFO L225 Difference]: With dead ends: 4099 [2021-02-19 20:45:59,899 INFO L226 Difference]: Without dead ends: 4032 [2021-02-19 20:45:59,899 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-02-19 20:45:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2021-02-19 20:45:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 3700. [2021-02-19 20:45:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 3.346850500135172) internal successors, (12380), 3699 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:45:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 12380 transitions. [2021-02-19 20:45:59,944 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 12380 transitions. Word has length 39 [2021-02-19 20:45:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:45:59,944 INFO L480 AbstractCegarLoop]: Abstraction has 3700 states and 12380 transitions. [2021-02-19 20:45:59,944 INFO L481 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) [2021-02-19 20:45:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 12380 transitions. [2021-02-19 20:45:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:45:59,948 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:45:59,948 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:45:59,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-02-19 20:45:59,948 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:45:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:45:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1722225444, now seen corresponding path program 161 times [2021-02-19 20:45:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:45:59,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045489022] [2021-02-19 20:45:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:45:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:00,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045489022] [2021-02-19 20:46:00,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:00,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:46:00,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085879232] [2021-02-19 20:46:00,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:46:00,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:46:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:46:00,440 INFO L87 Difference]: Start difference. First operand 3700 states and 12380 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) [2021-02-19 20:46:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:05,229 INFO L93 Difference]: Finished difference Result 4203 states and 13962 transitions. [2021-02-19 20:46:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 20:46:05,231 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 [2021-02-19 20:46:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:05,237 INFO L225 Difference]: With dead ends: 4203 [2021-02-19 20:46:05,237 INFO L226 Difference]: Without dead ends: 4160 [2021-02-19 20:46:05,238 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-02-19 20:46:05,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2021-02-19 20:46:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3706. [2021-02-19 20:46:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3449392712550607) internal successors, (12393), 3705 states have internal predecessors, (12393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12393 transitions. [2021-02-19 20:46:05,283 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12393 transitions. Word has length 39 [2021-02-19 20:46:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:05,284 INFO L480 AbstractCegarLoop]: Abstraction has 3706 states and 12393 transitions. [2021-02-19 20:46:05,284 INFO L481 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) [2021-02-19 20:46:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12393 transitions. [2021-02-19 20:46:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:05,287 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:05,287 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:05,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-02-19 20:46:05,288 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash -58372858, now seen corresponding path program 162 times [2021-02-19 20:46:05,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:05,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60414141] [2021-02-19 20:46:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:05,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60414141] [2021-02-19 20:46:05,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:05,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:46:05,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83936821] [2021-02-19 20:46:05,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:46:05,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:46:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:46:05,777 INFO L87 Difference]: Start difference. First operand 3706 states and 12393 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) [2021-02-19 20:46:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:10,436 INFO L93 Difference]: Finished difference Result 4134 states and 13782 transitions. [2021-02-19 20:46:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-19 20:46:10,439 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 [2021-02-19 20:46:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:10,445 INFO L225 Difference]: With dead ends: 4134 [2021-02-19 20:46:10,445 INFO L226 Difference]: Without dead ends: 4070 [2021-02-19 20:46:10,445 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 20:46:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-02-19 20:46:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3688. [2021-02-19 20:46:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 3.3474369406021154) internal successors, (12342), 3687 states have internal predecessors, (12342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 12342 transitions. [2021-02-19 20:46:10,490 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 12342 transitions. Word has length 39 [2021-02-19 20:46:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:10,490 INFO L480 AbstractCegarLoop]: Abstraction has 3688 states and 12342 transitions. [2021-02-19 20:46:10,490 INFO L481 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) [2021-02-19 20:46:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 12342 transitions. [2021-02-19 20:46:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:10,494 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:10,494 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:10,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-02-19 20:46:10,494 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:10,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:10,494 INFO L82 PathProgramCache]: Analyzing trace with hash -467188474, now seen corresponding path program 163 times [2021-02-19 20:46:10,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:10,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646331052] [2021-02-19 20:46:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:10,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646331052] [2021-02-19 20:46:10,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:10,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-19 20:46:10,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68482629] [2021-02-19 20:46:10,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:46:10,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:10,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:46:10,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:46:10,999 INFO L87 Difference]: Start difference. First operand 3688 states and 12342 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) [2021-02-19 20:46:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:15,699 INFO L93 Difference]: Finished difference Result 4145 states and 13790 transitions. [2021-02-19 20:46:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 20:46:15,702 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 [2021-02-19 20:46:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:15,708 INFO L225 Difference]: With dead ends: 4145 [2021-02-19 20:46:15,708 INFO L226 Difference]: Without dead ends: 4015 [2021-02-19 20:46:15,708 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:46:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-02-19 20:46:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3664. [2021-02-19 20:46:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3497133497133498) internal successors, (12270), 3663 states have internal predecessors, (12270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12270 transitions. [2021-02-19 20:46:15,753 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12270 transitions. Word has length 39 [2021-02-19 20:46:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:15,753 INFO L480 AbstractCegarLoop]: Abstraction has 3664 states and 12270 transitions. [2021-02-19 20:46:15,753 INFO L481 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) [2021-02-19 20:46:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12270 transitions. [2021-02-19 20:46:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:15,758 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:15,758 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:15,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-02-19 20:46:15,758 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1533561490, now seen corresponding path program 164 times [2021-02-19 20:46:15,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:15,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089500594] [2021-02-19 20:46:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:16,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089500594] [2021-02-19 20:46:16,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:16,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:16,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794541311] [2021-02-19 20:46:16,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:16,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:16,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:16,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:16,372 INFO L87 Difference]: Start difference. First operand 3664 states and 12270 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) [2021-02-19 20:46:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:20,618 INFO L93 Difference]: Finished difference Result 4129 states and 13740 transitions. [2021-02-19 20:46:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-19 20:46:20,621 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 [2021-02-19 20:46:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:20,627 INFO L225 Difference]: With dead ends: 4129 [2021-02-19 20:46:20,627 INFO L226 Difference]: Without dead ends: 4062 [2021-02-19 20:46:20,628 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 20:46:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-02-19 20:46:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3680. [2021-02-19 20:46:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.3460179396575156) internal successors, (12310), 3679 states have internal predecessors, (12310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12310 transitions. [2021-02-19 20:46:20,675 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12310 transitions. Word has length 39 [2021-02-19 20:46:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:20,675 INFO L480 AbstractCegarLoop]: Abstraction has 3680 states and 12310 transitions. [2021-02-19 20:46:20,675 INFO L481 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) [2021-02-19 20:46:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12310 transitions. [2021-02-19 20:46:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:20,679 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:20,679 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:20,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-02-19 20:46:20,679 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:20,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:20,680 INFO L82 PathProgramCache]: Analyzing trace with hash -348852592, now seen corresponding path program 165 times [2021-02-19 20:46:20,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:20,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703361068] [2021-02-19 20:46:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:21,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703361068] [2021-02-19 20:46:21,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:21,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:21,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204257534] [2021-02-19 20:46:21,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:21,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:21,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:21,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:21,256 INFO L87 Difference]: Start difference. First operand 3680 states and 12310 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) [2021-02-19 20:46:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:26,928 INFO L93 Difference]: Finished difference Result 4266 states and 14097 transitions. [2021-02-19 20:46:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-02-19 20:46:26,931 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 [2021-02-19 20:46:26,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:26,937 INFO L225 Difference]: With dead ends: 4266 [2021-02-19 20:46:26,937 INFO L226 Difference]: Without dead ends: 4223 [2021-02-19 20:46:26,937 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-02-19 20:46:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-02-19 20:46:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3686. [2021-02-19 20:46:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.344097693351425) internal successors, (12323), 3685 states have internal predecessors, (12323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12323 transitions. [2021-02-19 20:46:26,982 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12323 transitions. Word has length 39 [2021-02-19 20:46:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:26,982 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 12323 transitions. [2021-02-19 20:46:26,982 INFO L481 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) [2021-02-19 20:46:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12323 transitions. [2021-02-19 20:46:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:26,986 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:26,986 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:26,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-02-19 20:46:26,986 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2129450894, now seen corresponding path program 166 times [2021-02-19 20:46:26,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:26,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161423845] [2021-02-19 20:46:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:27,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161423845] [2021-02-19 20:46:27,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:27,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:27,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193915058] [2021-02-19 20:46:27,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:27,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:27,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:27,555 INFO L87 Difference]: Start difference. First operand 3686 states and 12323 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) [2021-02-19 20:46:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:33,031 INFO L93 Difference]: Finished difference Result 4197 states and 13917 transitions. [2021-02-19 20:46:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-19 20:46:33,033 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 [2021-02-19 20:46:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:33,040 INFO L225 Difference]: With dead ends: 4197 [2021-02-19 20:46:33,040 INFO L226 Difference]: Without dead ends: 4133 [2021-02-19 20:46:33,040 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-02-19 20:46:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-02-19 20:46:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3668. [2021-02-19 20:46:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.348786473956913) internal successors, (12280), 3667 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12280 transitions. [2021-02-19 20:46:33,086 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12280 transitions. Word has length 39 [2021-02-19 20:46:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:33,086 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12280 transitions. [2021-02-19 20:46:33,086 INFO L481 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) [2021-02-19 20:46:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12280 transitions. [2021-02-19 20:46:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:33,089 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:33,089 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:33,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-02-19 20:46:33,090 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -566990716, now seen corresponding path program 167 times [2021-02-19 20:46:33,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:33,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098226829] [2021-02-19 20:46:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:33,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098226829] [2021-02-19 20:46:33,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:33,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:33,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218460995] [2021-02-19 20:46:33,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:33,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:33,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:33,693 INFO L87 Difference]: Start difference. First operand 3668 states and 12280 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) [2021-02-19 20:46:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:37,370 INFO L93 Difference]: Finished difference Result 4015 states and 13375 transitions. [2021-02-19 20:46:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:46:37,373 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:46:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:37,379 INFO L225 Difference]: With dead ends: 4015 [2021-02-19 20:46:37,379 INFO L226 Difference]: Without dead ends: 3948 [2021-02-19 20:46:37,379 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-02-19 20:46:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-02-19 20:46:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3676. [2021-02-19 20:46:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3458503401360544) internal successors, (12296), 3675 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12296 transitions. [2021-02-19 20:46:37,423 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12296 transitions. Word has length 39 [2021-02-19 20:46:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:37,423 INFO L480 AbstractCegarLoop]: Abstraction has 3676 states and 12296 transitions. [2021-02-19 20:46:37,423 INFO L481 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) [2021-02-19 20:46:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12296 transitions. [2021-02-19 20:46:37,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:37,427 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:37,427 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:37,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-02-19 20:46:37,427 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:37,427 INFO L82 PathProgramCache]: Analyzing trace with hash -739133934, now seen corresponding path program 168 times [2021-02-19 20:46:37,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:37,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438227466] [2021-02-19 20:46:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438227466] [2021-02-19 20:46:38,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:38,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:38,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538568809] [2021-02-19 20:46:38,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:38,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:38,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:38,031 INFO L87 Difference]: Start difference. First operand 3676 states and 12296 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) [2021-02-19 20:46:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:41,827 INFO L93 Difference]: Finished difference Result 4003 states and 13335 transitions. [2021-02-19 20:46:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 20:46:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-02-19 20:46:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:41,836 INFO L225 Difference]: With dead ends: 4003 [2021-02-19 20:46:41,836 INFO L226 Difference]: Without dead ends: 3940 [2021-02-19 20:46:41,836 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:46:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-02-19 20:46:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3668. [2021-02-19 20:46:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-02-19 20:46:41,882 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-02-19 20:46:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:41,882 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-02-19 20:46:41,882 INFO L481 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) [2021-02-19 20:46:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-02-19 20:46:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:41,887 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:41,887 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:41,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-02-19 20:46:41,887 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1775289934, now seen corresponding path program 169 times [2021-02-19 20:46:41,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:41,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814905278] [2021-02-19 20:46:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:42,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814905278] [2021-02-19 20:46:42,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:42,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:42,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582553087] [2021-02-19 20:46:42,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:42,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:42,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:42,508 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-02-19 20:46:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:47,615 INFO L93 Difference]: Finished difference Result 4137 states and 13670 transitions. [2021-02-19 20:46:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-19 20:46:47,618 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 [2021-02-19 20:46:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:47,624 INFO L225 Difference]: With dead ends: 4137 [2021-02-19 20:46:47,624 INFO L226 Difference]: Without dead ends: 4094 [2021-02-19 20:46:47,624 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=314, Invalid=2992, Unknown=0, NotChecked=0, Total=3306 [2021-02-19 20:46:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-02-19 20:46:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3676. [2021-02-19 20:46:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3458503401360544) internal successors, (12296), 3675 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12296 transitions. [2021-02-19 20:46:47,669 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12296 transitions. Word has length 39 [2021-02-19 20:46:47,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:47,669 INFO L480 AbstractCegarLoop]: Abstraction has 3676 states and 12296 transitions. [2021-02-19 20:46:47,669 INFO L481 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) [2021-02-19 20:46:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12296 transitions. [2021-02-19 20:46:47,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:47,672 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:47,672 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:47,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-02-19 20:46:47,673 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:47,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:47,673 INFO L82 PathProgramCache]: Analyzing trace with hash 739079060, now seen corresponding path program 170 times [2021-02-19 20:46:47,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:47,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875084422] [2021-02-19 20:46:47,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:48,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875084422] [2021-02-19 20:46:48,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:48,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:48,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97729336] [2021-02-19 20:46:48,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:48,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:48,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:48,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:48,261 INFO L87 Difference]: Start difference. First operand 3676 states and 12296 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) [2021-02-19 20:46:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:53,391 INFO L93 Difference]: Finished difference Result 4125 states and 13632 transitions. [2021-02-19 20:46:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 20:46:53,394 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 [2021-02-19 20:46:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:53,400 INFO L225 Difference]: With dead ends: 4125 [2021-02-19 20:46:53,400 INFO L226 Difference]: Without dead ends: 4073 [2021-02-19 20:46:53,400 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=306, Invalid=2886, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:46:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2021-02-19 20:46:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3668. [2021-02-19 20:46:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-02-19 20:46:53,445 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-02-19 20:46:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:53,445 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-02-19 20:46:53,445 INFO L481 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) [2021-02-19 20:46:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-02-19 20:46:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:53,448 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:53,449 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:53,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-02-19 20:46:53,449 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash -856806364, now seen corresponding path program 171 times [2021-02-19 20:46:53,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:53,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382322863] [2021-02-19 20:46:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:54,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382322863] [2021-02-19 20:46:54,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:54,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:54,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553879361] [2021-02-19 20:46:54,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:54,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:54,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:54,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:54,060 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-02-19 20:46:58,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:46:58,216 INFO L93 Difference]: Finished difference Result 4090 states and 13523 transitions. [2021-02-19 20:46:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-19 20:46:58,219 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 [2021-02-19 20:46:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:46:58,225 INFO L225 Difference]: With dead ends: 4090 [2021-02-19 20:46:58,226 INFO L226 Difference]: Without dead ends: 4035 [2021-02-19 20:46:58,226 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2021-02-19 20:46:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2021-02-19 20:46:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3670. [2021-02-19 20:46:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.3466884709730174) internal successors, (12279), 3669 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:46:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12279 transitions. [2021-02-19 20:46:58,270 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12279 transitions. Word has length 39 [2021-02-19 20:46:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:46:58,270 INFO L480 AbstractCegarLoop]: Abstraction has 3670 states and 12279 transitions. [2021-02-19 20:46:58,271 INFO L481 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) [2021-02-19 20:46:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12279 transitions. [2021-02-19 20:46:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:46:58,274 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:46:58,274 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:46:58,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-02-19 20:46:58,274 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:46:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:46:58,275 INFO L82 PathProgramCache]: Analyzing trace with hash 315845858, now seen corresponding path program 172 times [2021-02-19 20:46:58,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:46:58,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681195833] [2021-02-19 20:46:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:46:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:46:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:46:58,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681195833] [2021-02-19 20:46:58,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:46:58,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:46:58,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158008433] [2021-02-19 20:46:58,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:46:58,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:46:58,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:46:58,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:46:58,919 INFO L87 Difference]: Start difference. First operand 3670 states and 12279 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) [2021-02-19 20:47:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:47:02,971 INFO L93 Difference]: Finished difference Result 4000 states and 13325 transitions. [2021-02-19 20:47:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 20:47:02,974 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 [2021-02-19 20:47:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:47:02,979 INFO L225 Difference]: With dead ends: 4000 [2021-02-19 20:47:02,980 INFO L226 Difference]: Without dead ends: 3936 [2021-02-19 20:47:02,980 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-02-19 20:47:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-02-19 20:47:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3664. [2021-02-19 20:47:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3486213486213487) internal successors, (12266), 3663 states have internal predecessors, (12266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:47:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12266 transitions. [2021-02-19 20:47:03,024 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12266 transitions. Word has length 39 [2021-02-19 20:47:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:47:03,024 INFO L480 AbstractCegarLoop]: Abstraction has 3664 states and 12266 transitions. [2021-02-19 20:47:03,024 INFO L481 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) [2021-02-19 20:47:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12266 transitions. [2021-02-19 20:47:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:47:03,028 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:47:03,028 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:47:03,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-02-19 20:47:03,028 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:47:03,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:47:03,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1737073116, now seen corresponding path program 173 times [2021-02-19 20:47:03,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:47:03,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717150767] [2021-02-19 20:47:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:47:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:47:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:47:03,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717150767] [2021-02-19 20:47:03,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:47:03,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:47:03,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355675769] [2021-02-19 20:47:03,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:47:03,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:47:03,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:47:03,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:47:03,669 INFO L87 Difference]: Start difference. First operand 3664 states and 12266 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) [2021-02-19 20:47:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:47:09,705 INFO L93 Difference]: Finished difference Result 4263 states and 14057 transitions. [2021-02-19 20:47:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-19 20:47:09,708 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 [2021-02-19 20:47:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:47:09,714 INFO L225 Difference]: With dead ends: 4263 [2021-02-19 20:47:09,714 INFO L226 Difference]: Without dead ends: 4126 [2021-02-19 20:47:09,714 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=307, Invalid=3115, Unknown=0, NotChecked=0, Total=3422 [2021-02-19 20:47:09,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-02-19 20:47:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3668. [2021-02-19 20:47:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:47:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-02-19 20:47:09,759 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-02-19 20:47:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:47:09,759 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-02-19 20:47:09,759 INFO L481 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) [2021-02-19 20:47:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-02-19 20:47:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:47:09,763 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:47:09,763 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:47:09,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-02-19 20:47:09,763 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:47:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:47:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1063003280, now seen corresponding path program 174 times [2021-02-19 20:47:09,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:47:09,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986168465] [2021-02-19 20:47:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:47:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:47:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:47:10,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986168465] [2021-02-19 20:47:10,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:47:10,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:47:10,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036212141] [2021-02-19 20:47:10,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:47:10,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:47:10,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:47:10,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:47:10,410 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-02-19 20:47:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:47:15,808 INFO L93 Difference]: Finished difference Result 4241 states and 13923 transitions. [2021-02-19 20:47:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 20:47:15,811 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 [2021-02-19 20:47:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:47:15,817 INFO L225 Difference]: With dead ends: 4241 [2021-02-19 20:47:15,817 INFO L226 Difference]: Without dead ends: 4177 [2021-02-19 20:47:15,818 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=299, Invalid=2893, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:47:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2021-02-19 20:47:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 3668. [2021-02-19 20:47:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:47:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-02-19 20:47:15,862 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-02-19 20:47:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:47:15,862 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-02-19 20:47:15,862 INFO L481 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) [2021-02-19 20:47:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-02-19 20:47:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:47:15,866 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:47:15,866 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:47:15,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-02-19 20:47:15,866 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:47:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:47:15,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1981486850, now seen corresponding path program 175 times [2021-02-19 20:47:15,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:47:15,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735421377] [2021-02-19 20:47:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:47:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:47:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:47:16,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735421377] [2021-02-19 20:47:16,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:47:16,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:47:16,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448092805] [2021-02-19 20:47:16,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:47:16,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:47:16,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:47:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:47:16,497 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-02-19 20:47:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:47:20,833 INFO L93 Difference]: Finished difference Result 4146 states and 13671 transitions. [2021-02-19 20:47:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 20:47:20,836 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 [2021-02-19 20:47:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:47:20,843 INFO L225 Difference]: With dead ends: 4146 [2021-02-19 20:47:20,843 INFO L226 Difference]: Without dead ends: 4091 [2021-02-19 20:47:20,843 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 20:47:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2021-02-19 20:47:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3670. [2021-02-19 20:47:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.3466884709730174) internal successors, (12279), 3669 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:47:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12279 transitions. [2021-02-19 20:47:20,888 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12279 transitions. Word has length 39 [2021-02-19 20:47:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:47:20,888 INFO L480 AbstractCegarLoop]: Abstraction has 3670 states and 12279 transitions. [2021-02-19 20:47:20,888 INFO L481 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) [2021-02-19 20:47:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12279 transitions. [2021-02-19 20:47:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-19 20:47:20,892 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:47:20,892 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:47:20,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-02-19 20:47:20,892 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:47:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:47:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1140828224, now seen corresponding path program 176 times [2021-02-19 20:47:20,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:47:20,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102705912] [2021-02-19 20:47:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:47:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:47:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:47:21,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102705912] [2021-02-19 20:47:21,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:47:21,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-19 20:47:21,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137379922] [2021-02-19 20:47:21,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 20:47:21,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:47:21,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 20:47:21,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:47:21,541 INFO L87 Difference]: Start difference. First operand 3670 states and 12279 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) Received shutdown request... [2021-02-19 20:47:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-19 20:47:24,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-02-19 20:47:24,269 WARN L545 AbstractCegarLoop]: Verification canceled [2021-02-19 20:47:24,272 WARN L224 ceAbstractionStarter]: Timeout [2021-02-19 20:47:24,272 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 08:47:24 BasicIcfg [2021-02-19 20:47:24,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 20:47:24,272 INFO L168 Benchmark]: Toolchain (without parser) took 510540.76 ms. Allocated memory was 255.9 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 236.5 MB in the beginning and 1.2 GB in the end (delta: -922.1 MB). Peak memory consumption was 547.5 MB. Max. memory is 16.0 GB. [2021-02-19 20:47:24,273 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 20:47:24,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.05 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 20:47:24,273 INFO L168 Benchmark]: Boogie Preprocessor took 11.29 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 936.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 20:47:24,273 INFO L168 Benchmark]: RCFGBuilder took 231.84 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 235.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.0 GB. [2021-02-19 20:47:24,273 INFO L168 Benchmark]: TraceAbstraction took 510257.27 ms. Allocated memory was 255.9 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: -923.7 MB). Peak memory consumption was 546.8 MB. Max. memory is 16.0 GB. [2021-02-19 20:47:24,273 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 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.05 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.29 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 936.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 231.84 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 235.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 510257.27 ms. Allocated memory was 255.9 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: -923.7 MB). Peak memory consumption was 546.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (3670states) and FLOYD_HOARE automaton (currently 22 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 510.1s, OverallIterations: 176, TraceHistogramMax: 1, AutomataDifference: 432.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 24851 SDtfs, 46053 SDslu, 230802 SDs, 0 SdLazy, 256801 SolverSat, 7613 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8869 GetRequests, 287 SyntacticMatches, 364 SemanticMatches, 8217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91807 ImplicationChecksByTransitivity, 252.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5271occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 175 MinimizatonAttempts, 112464 StatesRemovedByMinimization, 173 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 62.7s InterpolantComputationTime, 6864 NumberOfCodeBlocks, 6864 NumberOfCodeBlocksAsserted, 176 NumberOfCheckSat, 6688 ConstructedInterpolants, 0 QuantifiedInterpolants, 3326330 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 176 InterpolantComputations, 176 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