/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/eca-rers2012/Problem17_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 02:25:41,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 02:25:41,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 02:25:41,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 02:25:41,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 02:25:41,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 02:25:41,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 02:25:41,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 02:25:41,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 02:25:41,969 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 02:25:41,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 02:25:41,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 02:25:41,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 02:25:41,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 02:25:41,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 02:25:41,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 02:25:41,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 02:25:41,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 02:25:41,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 02:25:41,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 02:25:41,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 02:25:41,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 02:25:41,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 02:25:41,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 02:25:41,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 02:25:41,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 02:25:41,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 02:25:41,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 02:25:41,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 02:25:41,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 02:25:41,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 02:25:42,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 02:25:42,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 02:25:42,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 02:25:42,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 02:25:42,491 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 02:25:42,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2020-12-22 02:25:42,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fb6e2dd/7afebe02abca46578552a4918a595cf6/FLAGe7ba2007f [2020-12-22 02:25:43,557 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 02:25:43,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2020-12-22 02:25:43,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fb6e2dd/7afebe02abca46578552a4918a595cf6/FLAGe7ba2007f [2020-12-22 02:25:44,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fb6e2dd/7afebe02abca46578552a4918a595cf6 [2020-12-22 02:25:44,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 02:25:44,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 02:25:44,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 02:25:44,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 02:25:44,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 02:25:44,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:25:44" (1/1) ... [2020-12-22 02:25:44,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0ac76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:44, skipping insertion in model container [2020-12-22 02:25:44,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:25:44" (1/1) ... [2020-12-22 02:25:44,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 02:25:44,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 02:25:44,572 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c[8748,8761] [2020-12-22 02:25:45,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 02:25:45,256 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 02:25:45,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c[8748,8761] [2020-12-22 02:25:45,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 02:25:45,854 INFO L208 MainTranslator]: Completed translation [2020-12-22 02:25:45,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45 WrapperNode [2020-12-22 02:25:45,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 02:25:45,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 02:25:45,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 02:25:45,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 02:25:45,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:45,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 02:25:46,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 02:25:46,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 02:25:46,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 02:25:46,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (1/1) ... [2020-12-22 02:25:46,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 02:25:46,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 02:25:46,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 02:25:46,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 02:25:46,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (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 [2020-12-22 02:25:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 02:25:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 02:25:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 02:25:47,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 02:25:51,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 02:25:51,788 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 02:25:51,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:25:51 BoogieIcfgContainer [2020-12-22 02:25:51,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 02:25:51,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 02:25:51,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 02:25:51,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 02:25:51,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:25:44" (1/3) ... [2020-12-22 02:25:51,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3719b419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:25:51, skipping insertion in model container [2020-12-22 02:25:51,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:25:45" (2/3) ... [2020-12-22 02:25:51,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3719b419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:25:51, skipping insertion in model container [2020-12-22 02:25:51,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:25:51" (3/3) ... [2020-12-22 02:25:51,802 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label21.c [2020-12-22 02:25:51,810 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 02:25:51,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 02:25:51,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 02:25:51,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 02:25:51,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 02:25:51,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 02:25:51,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 02:25:51,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 02:25:51,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 02:25:51,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 02:25:51,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 02:25:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2020-12-22 02:25:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 02:25:51,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:25:51,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:25:51,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:25:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:25:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2020-12-22 02:25:51,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:25:51,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815595614] [2020-12-22 02:25:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:25:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:25:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 02:25:52,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815595614] [2020-12-22 02:25:52,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:25:52,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 02:25:52,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20797584] [2020-12-22 02:25:52,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:25:52,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:25:52,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:25:52,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:25:52,404 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 3 states. [2020-12-22 02:25:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:25:57,173 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2020-12-22 02:25:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:25:57,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 02:25:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:25:57,207 INFO L225 Difference]: With dead ends: 1667 [2020-12-22 02:25:57,207 INFO L226 Difference]: Without dead ends: 998 [2020-12-22 02:25:57,214 INFO L677 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 [2020-12-22 02:25:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-12-22 02:25:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2020-12-22 02:25:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-12-22 02:25:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2020-12-22 02:25:57,325 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 59 [2020-12-22 02:25:57,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:25:57,326 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2020-12-22 02:25:57,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:25:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2020-12-22 02:25:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 02:25:57,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:25:57,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:25:57,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 02:25:57,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:25:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:25:57,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1276638629, now seen corresponding path program 1 times [2020-12-22 02:25:57,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:25:57,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211832857] [2020-12-22 02:25:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:25:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:25:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 02:25:57,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211832857] [2020-12-22 02:25:57,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:25:57,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 02:25:57,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465390163] [2020-12-22 02:25:57,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:25:57,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:25:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:25:57,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:25:57,574 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand 3 states. [2020-12-22 02:26:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:01,964 INFO L93 Difference]: Finished difference Result 2840 states and 4882 transitions. [2020-12-22 02:26:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:01,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 02:26:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:01,978 INFO L225 Difference]: With dead ends: 2840 [2020-12-22 02:26:01,979 INFO L226 Difference]: Without dead ends: 1860 [2020-12-22 02:26:01,986 INFO L677 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 [2020-12-22 02:26:01,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2020-12-22 02:26:02,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1854. [2020-12-22 02:26:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1854 states. [2020-12-22 02:26:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2759 transitions. [2020-12-22 02:26:02,049 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2759 transitions. Word has length 124 [2020-12-22 02:26:02,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:02,050 INFO L481 AbstractCegarLoop]: Abstraction has 1854 states and 2759 transitions. [2020-12-22 02:26:02,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2759 transitions. [2020-12-22 02:26:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 02:26:02,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:02,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:02,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 02:26:02,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:02,058 INFO L82 PathProgramCache]: Analyzing trace with hash 822490014, now seen corresponding path program 1 times [2020-12-22 02:26:02,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:02,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254040761] [2020-12-22 02:26:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 02:26:02,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254040761] [2020-12-22 02:26:02,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:02,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 02:26:02,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109988121] [2020-12-22 02:26:02,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:02,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:02,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:02,300 INFO L87 Difference]: Start difference. First operand 1854 states and 2759 transitions. Second operand 3 states. [2020-12-22 02:26:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:06,361 INFO L93 Difference]: Finished difference Result 5418 states and 8069 transitions. [2020-12-22 02:26:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:06,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 02:26:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:06,382 INFO L225 Difference]: With dead ends: 5418 [2020-12-22 02:26:06,382 INFO L226 Difference]: Without dead ends: 3566 [2020-12-22 02:26:06,386 INFO L677 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 [2020-12-22 02:26:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2020-12-22 02:26:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3138. [2020-12-22 02:26:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-12-22 02:26:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4061 transitions. [2020-12-22 02:26:06,461 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4061 transitions. Word has length 134 [2020-12-22 02:26:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:06,462 INFO L481 AbstractCegarLoop]: Abstraction has 3138 states and 4061 transitions. [2020-12-22 02:26:06,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4061 transitions. [2020-12-22 02:26:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-22 02:26:06,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:06,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:06,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 02:26:06,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:06,467 INFO L82 PathProgramCache]: Analyzing trace with hash 14887796, now seen corresponding path program 1 times [2020-12-22 02:26:06,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:06,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403879508] [2020-12-22 02:26:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 02:26:06,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403879508] [2020-12-22 02:26:06,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:06,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:06,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150977717] [2020-12-22 02:26:06,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:06,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:06,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:06,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:06,707 INFO L87 Difference]: Start difference. First operand 3138 states and 4061 transitions. Second operand 3 states. [2020-12-22 02:26:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:10,902 INFO L93 Difference]: Finished difference Result 7984 states and 10671 transitions. [2020-12-22 02:26:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:10,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-12-22 02:26:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:10,930 INFO L225 Difference]: With dead ends: 7984 [2020-12-22 02:26:10,930 INFO L226 Difference]: Without dead ends: 4848 [2020-12-22 02:26:10,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4848 states. [2020-12-22 02:26:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4848 to 4848. [2020-12-22 02:26:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4848 states. [2020-12-22 02:26:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 6226 transitions. [2020-12-22 02:26:11,043 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 6226 transitions. Word has length 207 [2020-12-22 02:26:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:11,044 INFO L481 AbstractCegarLoop]: Abstraction has 4848 states and 6226 transitions. [2020-12-22 02:26:11,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 6226 transitions. [2020-12-22 02:26:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 02:26:11,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:11,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:11,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 02:26:11,048 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 668808547, now seen corresponding path program 1 times [2020-12-22 02:26:11,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:11,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425228241] [2020-12-22 02:26:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 02:26:11,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425228241] [2020-12-22 02:26:11,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:11,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:11,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749835224] [2020-12-22 02:26:11,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:11,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:11,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:11,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:11,323 INFO L87 Difference]: Start difference. First operand 4848 states and 6226 transitions. Second operand 3 states. [2020-12-22 02:26:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:15,880 INFO L93 Difference]: Finished difference Result 13517 states and 17385 transitions. [2020-12-22 02:26:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:15,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-22 02:26:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:15,923 INFO L225 Difference]: With dead ends: 13517 [2020-12-22 02:26:15,924 INFO L226 Difference]: Without dead ends: 8671 [2020-12-22 02:26:15,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2020-12-22 02:26:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7395. [2020-12-22 02:26:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7395 states. [2020-12-22 02:26:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7395 states to 7395 states and 9035 transitions. [2020-12-22 02:26:16,089 INFO L78 Accepts]: Start accepts. Automaton has 7395 states and 9035 transitions. Word has length 213 [2020-12-22 02:26:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:16,090 INFO L481 AbstractCegarLoop]: Abstraction has 7395 states and 9035 transitions. [2020-12-22 02:26:16,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7395 states and 9035 transitions. [2020-12-22 02:26:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-12-22 02:26:16,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:16,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:16,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 02:26:16,095 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1165933361, now seen corresponding path program 1 times [2020-12-22 02:26:16,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:16,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908258731] [2020-12-22 02:26:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-22 02:26:16,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908258731] [2020-12-22 02:26:16,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:16,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:16,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238105518] [2020-12-22 02:26:16,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:16,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:16,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:16,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:16,285 INFO L87 Difference]: Start difference. First operand 7395 states and 9035 transitions. Second operand 3 states. [2020-12-22 02:26:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:21,476 INFO L93 Difference]: Finished difference Result 18617 states and 23012 transitions. [2020-12-22 02:26:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:21,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2020-12-22 02:26:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:21,527 INFO L225 Difference]: With dead ends: 18617 [2020-12-22 02:26:21,528 INFO L226 Difference]: Without dead ends: 11224 [2020-12-22 02:26:21,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:21,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11224 states. [2020-12-22 02:26:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11224 to 9940. [2020-12-22 02:26:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9940 states. [2020-12-22 02:26:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 12091 transitions. [2020-12-22 02:26:21,726 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 12091 transitions. Word has length 226 [2020-12-22 02:26:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:21,726 INFO L481 AbstractCegarLoop]: Abstraction has 9940 states and 12091 transitions. [2020-12-22 02:26:21,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 12091 transitions. [2020-12-22 02:26:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-12-22 02:26:21,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:21,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:21,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 02:26:21,733 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1197163501, now seen corresponding path program 1 times [2020-12-22 02:26:21,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:21,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204196220] [2020-12-22 02:26:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-22 02:26:21,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204196220] [2020-12-22 02:26:21,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:21,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:21,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108021007] [2020-12-22 02:26:21,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:21,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:21,976 INFO L87 Difference]: Start difference. First operand 9940 states and 12091 transitions. Second operand 3 states. [2020-12-22 02:26:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:27,272 INFO L93 Difference]: Finished difference Result 24581 states and 30007 transitions. [2020-12-22 02:26:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:27,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2020-12-22 02:26:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:27,310 INFO L225 Difference]: With dead ends: 24581 [2020-12-22 02:26:27,310 INFO L226 Difference]: Without dead ends: 13366 [2020-12-22 02:26:27,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13366 states. [2020-12-22 02:26:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13366 to 13358. [2020-12-22 02:26:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13358 states. [2020-12-22 02:26:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13358 states to 13358 states and 15838 transitions. [2020-12-22 02:26:27,524 INFO L78 Accepts]: Start accepts. Automaton has 13358 states and 15838 transitions. Word has length 275 [2020-12-22 02:26:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:27,525 INFO L481 AbstractCegarLoop]: Abstraction has 13358 states and 15838 transitions. [2020-12-22 02:26:27,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 13358 states and 15838 transitions. [2020-12-22 02:26:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-12-22 02:26:27,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:27,532 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:27,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 02:26:27,532 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash 843993686, now seen corresponding path program 1 times [2020-12-22 02:26:27,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:27,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679426502] [2020-12-22 02:26:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 252 proven. 70 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 02:26:27,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679426502] [2020-12-22 02:26:27,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372848478] [2020-12-22 02:26:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 02:26:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:28,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 02:26:28,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 02:26:28,464 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 02:26:28,497 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 02:26:28,665 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 02:26:28,856 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 02:26:29,100 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 02:26:29,177 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 02:26:29,317 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 02:26:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 252 proven. 70 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 02:26:30,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 02:26:30,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-22 02:26:30,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470271107] [2020-12-22 02:26:30,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 02:26:30,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:30,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 02:26:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:26:30,552 INFO L87 Difference]: Start difference. First operand 13358 states and 15838 transitions. Second operand 4 states. [2020-12-22 02:26:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:38,873 INFO L93 Difference]: Finished difference Result 32254 states and 38648 transitions. [2020-12-22 02:26:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 02:26:38,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 283 [2020-12-22 02:26:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:38,916 INFO L225 Difference]: With dead ends: 32254 [2020-12-22 02:26:38,917 INFO L226 Difference]: Without dead ends: 18048 [2020-12-22 02:26:38,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:26:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18048 states. [2020-12-22 02:26:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18048 to 18045. [2020-12-22 02:26:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18045 states. [2020-12-22 02:26:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18045 states to 18045 states and 20806 transitions. [2020-12-22 02:26:39,303 INFO L78 Accepts]: Start accepts. Automaton has 18045 states and 20806 transitions. Word has length 283 [2020-12-22 02:26:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:39,304 INFO L481 AbstractCegarLoop]: Abstraction has 18045 states and 20806 transitions. [2020-12-22 02:26:39,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 02:26:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 18045 states and 20806 transitions. [2020-12-22 02:26:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-12-22 02:26:39,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:39,314 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:39,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 02:26:39,528 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1167193495, now seen corresponding path program 1 times [2020-12-22 02:26:39,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:39,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332094025] [2020-12-22 02:26:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-12-22 02:26:39,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332094025] [2020-12-22 02:26:39,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:39,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:39,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509302685] [2020-12-22 02:26:39,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:39,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:39,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:39,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:39,833 INFO L87 Difference]: Start difference. First operand 18045 states and 20806 transitions. Second operand 3 states. [2020-12-22 02:26:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:45,811 INFO L93 Difference]: Finished difference Result 42916 states and 49908 transitions. [2020-12-22 02:26:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:45,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 319 [2020-12-22 02:26:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:45,863 INFO L225 Difference]: With dead ends: 42916 [2020-12-22 02:26:45,863 INFO L226 Difference]: Without dead ends: 24022 [2020-12-22 02:26:45,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24022 states. [2020-12-22 02:26:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24022 to 18045. [2020-12-22 02:26:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18045 states. [2020-12-22 02:26:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18045 states to 18045 states and 20691 transitions. [2020-12-22 02:26:46,252 INFO L78 Accepts]: Start accepts. Automaton has 18045 states and 20691 transitions. Word has length 319 [2020-12-22 02:26:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:46,253 INFO L481 AbstractCegarLoop]: Abstraction has 18045 states and 20691 transitions. [2020-12-22 02:26:46,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18045 states and 20691 transitions. [2020-12-22 02:26:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-12-22 02:26:46,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:46,266 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:46,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 02:26:46,266 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1225716937, now seen corresponding path program 2 times [2020-12-22 02:26:46,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:46,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018848003] [2020-12-22 02:26:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-12-22 02:26:46,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018848003] [2020-12-22 02:26:46,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:46,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:46,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382683840] [2020-12-22 02:26:46,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:46,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:46,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:46,686 INFO L87 Difference]: Start difference. First operand 18045 states and 20691 transitions. Second operand 3 states. [2020-12-22 02:26:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:52,421 INFO L93 Difference]: Finished difference Result 42046 states and 48556 transitions. [2020-12-22 02:26:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:52,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 353 [2020-12-22 02:26:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:52,468 INFO L225 Difference]: With dead ends: 42046 [2020-12-22 02:26:52,469 INFO L226 Difference]: Without dead ends: 23150 [2020-12-22 02:26:52,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2020-12-22 02:26:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 18030. [2020-12-22 02:26:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18030 states. [2020-12-22 02:26:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 20218 transitions. [2020-12-22 02:26:52,937 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 20218 transitions. Word has length 353 [2020-12-22 02:26:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:26:52,938 INFO L481 AbstractCegarLoop]: Abstraction has 18030 states and 20218 transitions. [2020-12-22 02:26:52,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:26:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 20218 transitions. [2020-12-22 02:26:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-12-22 02:26:52,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:26:52,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:26:52,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 02:26:52,952 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:26:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:26:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash -297153547, now seen corresponding path program 1 times [2020-12-22 02:26:52,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:26:52,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031233116] [2020-12-22 02:26:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:26:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:26:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-12-22 02:26:53,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031233116] [2020-12-22 02:26:53,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:26:53,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:26:53,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061631643] [2020-12-22 02:26:53,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:26:53,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:26:53,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:26:53,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:53,287 INFO L87 Difference]: Start difference. First operand 18030 states and 20218 transitions. Second operand 3 states. [2020-12-22 02:26:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:26:59,718 INFO L93 Difference]: Finished difference Result 42042 states and 47299 transitions. [2020-12-22 02:26:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:26:59,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2020-12-22 02:26:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:26:59,764 INFO L225 Difference]: With dead ends: 42042 [2020-12-22 02:26:59,764 INFO L226 Difference]: Without dead ends: 24439 [2020-12-22 02:26:59,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:26:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24439 states. [2020-12-22 02:27:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24439 to 23569. [2020-12-22 02:27:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23569 states. [2020-12-22 02:27:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23569 states to 23569 states and 26238 transitions. [2020-12-22 02:27:00,145 INFO L78 Accepts]: Start accepts. Automaton has 23569 states and 26238 transitions. Word has length 371 [2020-12-22 02:27:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:00,147 INFO L481 AbstractCegarLoop]: Abstraction has 23569 states and 26238 transitions. [2020-12-22 02:27:00,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23569 states and 26238 transitions. [2020-12-22 02:27:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 02:27:00,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:00,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:00,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 02:27:00,162 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:00,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1134618414, now seen corresponding path program 1 times [2020-12-22 02:27:00,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:00,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319725458] [2020-12-22 02:27:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-12-22 02:27:00,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319725458] [2020-12-22 02:27:00,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:00,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:00,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269094367] [2020-12-22 02:27:00,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:00,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:00,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:00,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:00,554 INFO L87 Difference]: Start difference. First operand 23569 states and 26238 transitions. Second operand 3 states. [2020-12-22 02:27:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:05,254 INFO L93 Difference]: Finished difference Result 46706 states and 52041 transitions. [2020-12-22 02:27:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:27:05,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-12-22 02:27:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:05,288 INFO L225 Difference]: With dead ends: 46706 [2020-12-22 02:27:05,288 INFO L226 Difference]: Without dead ends: 23564 [2020-12-22 02:27:05,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23564 states. [2020-12-22 02:27:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23564 to 23563. [2020-12-22 02:27:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23563 states. [2020-12-22 02:27:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23563 states to 23563 states and 26189 transitions. [2020-12-22 02:27:05,657 INFO L78 Accepts]: Start accepts. Automaton has 23563 states and 26189 transitions. Word has length 392 [2020-12-22 02:27:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:05,659 INFO L481 AbstractCegarLoop]: Abstraction has 23563 states and 26189 transitions. [2020-12-22 02:27:05,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 23563 states and 26189 transitions. [2020-12-22 02:27:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-12-22 02:27:05,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:05,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:05,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 02:27:05,683 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:05,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:05,684 INFO L82 PathProgramCache]: Analyzing trace with hash -177668569, now seen corresponding path program 1 times [2020-12-22 02:27:05,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:05,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96789996] [2020-12-22 02:27:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-12-22 02:27:06,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96789996] [2020-12-22 02:27:06,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:06,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:06,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098806807] [2020-12-22 02:27:06,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:06,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:06,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:06,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:06,214 INFO L87 Difference]: Start difference. First operand 23563 states and 26189 transitions. Second operand 3 states. [2020-12-22 02:27:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:12,908 INFO L93 Difference]: Finished difference Result 53926 states and 60416 transitions. [2020-12-22 02:27:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:27:12,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 441 [2020-12-22 02:27:12,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:12,952 INFO L225 Difference]: With dead ends: 53926 [2020-12-22 02:27:12,953 INFO L226 Difference]: Without dead ends: 30790 [2020-12-22 02:27:12,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30790 states. [2020-12-22 02:27:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30790 to 29081. [2020-12-22 02:27:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29081 states. [2020-12-22 02:27:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29081 states to 29081 states and 32203 transitions. [2020-12-22 02:27:13,626 INFO L78 Accepts]: Start accepts. Automaton has 29081 states and 32203 transitions. Word has length 441 [2020-12-22 02:27:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:13,627 INFO L481 AbstractCegarLoop]: Abstraction has 29081 states and 32203 transitions. [2020-12-22 02:27:13,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 29081 states and 32203 transitions. [2020-12-22 02:27:13,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-12-22 02:27:13,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:13,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:13,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 02:27:13,642 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:13,643 INFO L82 PathProgramCache]: Analyzing trace with hash -561888999, now seen corresponding path program 1 times [2020-12-22 02:27:13,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:13,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005946671] [2020-12-22 02:27:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2020-12-22 02:27:14,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005946671] [2020-12-22 02:27:14,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:14,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:14,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939926193] [2020-12-22 02:27:14,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:14,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:14,195 INFO L87 Difference]: Start difference. First operand 29081 states and 32203 transitions. Second operand 3 states. [2020-12-22 02:27:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:20,510 INFO L93 Difference]: Finished difference Result 63254 states and 70437 transitions. [2020-12-22 02:27:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:27:20,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 448 [2020-12-22 02:27:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:20,562 INFO L225 Difference]: With dead ends: 63254 [2020-12-22 02:27:20,562 INFO L226 Difference]: Without dead ends: 33325 [2020-12-22 02:27:20,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33325 states. [2020-12-22 02:27:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33325 to 28215. [2020-12-22 02:27:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28215 states. [2020-12-22 02:27:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28215 states to 28215 states and 31105 transitions. [2020-12-22 02:27:21,177 INFO L78 Accepts]: Start accepts. Automaton has 28215 states and 31105 transitions. Word has length 448 [2020-12-22 02:27:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:21,178 INFO L481 AbstractCegarLoop]: Abstraction has 28215 states and 31105 transitions. [2020-12-22 02:27:21,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 28215 states and 31105 transitions. [2020-12-22 02:27:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-12-22 02:27:21,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:21,202 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:21,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 02:27:21,203 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:21,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1731222198, now seen corresponding path program 1 times [2020-12-22 02:27:21,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:21,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558371071] [2020-12-22 02:27:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2020-12-22 02:27:21,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558371071] [2020-12-22 02:27:21,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:21,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:21,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208216042] [2020-12-22 02:27:21,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:21,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:21,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:21,887 INFO L87 Difference]: Start difference. First operand 28215 states and 31105 transitions. Second operand 3 states. [2020-12-22 02:27:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:28,412 INFO L93 Difference]: Finished difference Result 63679 states and 70479 transitions. [2020-12-22 02:27:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:27:28,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 585 [2020-12-22 02:27:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:28,469 INFO L225 Difference]: With dead ends: 63679 [2020-12-22 02:27:28,470 INFO L226 Difference]: Without dead ends: 35891 [2020-12-22 02:27:28,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35891 states. [2020-12-22 02:27:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35891 to 29056. [2020-12-22 02:27:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29056 states. [2020-12-22 02:27:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29056 states to 29056 states and 32021 transitions. [2020-12-22 02:27:28,887 INFO L78 Accepts]: Start accepts. Automaton has 29056 states and 32021 transitions. Word has length 585 [2020-12-22 02:27:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:28,888 INFO L481 AbstractCegarLoop]: Abstraction has 29056 states and 32021 transitions. [2020-12-22 02:27:28,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 29056 states and 32021 transitions. [2020-12-22 02:27:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2020-12-22 02:27:28,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:28,916 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:28,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 02:27:28,916 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:28,917 INFO L82 PathProgramCache]: Analyzing trace with hash -596677162, now seen corresponding path program 1 times [2020-12-22 02:27:28,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:28,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772130285] [2020-12-22 02:27:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2020-12-22 02:27:29,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772130285] [2020-12-22 02:27:29,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:29,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:29,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380741110] [2020-12-22 02:27:29,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:29,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:29,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:29,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:29,599 INFO L87 Difference]: Start difference. First operand 29056 states and 32021 transitions. Second operand 3 states. [2020-12-22 02:27:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:36,175 INFO L93 Difference]: Finished difference Result 63216 states and 69976 transitions. [2020-12-22 02:27:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:27:36,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 645 [2020-12-22 02:27:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:36,211 INFO L225 Difference]: With dead ends: 63216 [2020-12-22 02:27:36,212 INFO L226 Difference]: Without dead ends: 33731 [2020-12-22 02:27:36,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33731 states. [2020-12-22 02:27:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33731 to 33727. [2020-12-22 02:27:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33727 states. [2020-12-22 02:27:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33727 states to 33727 states and 36827 transitions. [2020-12-22 02:27:36,629 INFO L78 Accepts]: Start accepts. Automaton has 33727 states and 36827 transitions. Word has length 645 [2020-12-22 02:27:36,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:36,630 INFO L481 AbstractCegarLoop]: Abstraction has 33727 states and 36827 transitions. [2020-12-22 02:27:36,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 33727 states and 36827 transitions. [2020-12-22 02:27:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2020-12-22 02:27:36,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:36,654 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:36,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 02:27:36,654 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:36,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -226245992, now seen corresponding path program 1 times [2020-12-22 02:27:36,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:36,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702270543] [2020-12-22 02:27:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-12-22 02:27:37,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702270543] [2020-12-22 02:27:37,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:37,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:37,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995264028] [2020-12-22 02:27:37,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:37,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:37,697 INFO L87 Difference]: Start difference. First operand 33727 states and 36827 transitions. Second operand 3 states. [2020-12-22 02:27:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:44,385 INFO L93 Difference]: Finished difference Result 72578 states and 79321 transitions. [2020-12-22 02:27:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:27:44,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 710 [2020-12-22 02:27:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:44,428 INFO L225 Difference]: With dead ends: 72578 [2020-12-22 02:27:44,428 INFO L226 Difference]: Without dead ends: 38425 [2020-12-22 02:27:44,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38425 states. [2020-12-22 02:27:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38425 to 37141. [2020-12-22 02:27:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37141 states. [2020-12-22 02:27:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37141 states to 37141 states and 40437 transitions. [2020-12-22 02:27:44,868 INFO L78 Accepts]: Start accepts. Automaton has 37141 states and 40437 transitions. Word has length 710 [2020-12-22 02:27:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:44,869 INFO L481 AbstractCegarLoop]: Abstraction has 37141 states and 40437 transitions. [2020-12-22 02:27:44,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:27:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 37141 states and 40437 transitions. [2020-12-22 02:27:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2020-12-22 02:27:44,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:44,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:44,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 02:27:44,889 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash 100317149, now seen corresponding path program 1 times [2020-12-22 02:27:44,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:44,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906919724] [2020-12-22 02:27:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 02:27:45,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906919724] [2020-12-22 02:27:45,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:45,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 02:27:45,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797710271] [2020-12-22 02:27:45,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 02:27:45,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:45,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 02:27:45,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:27:45,942 INFO L87 Difference]: Start difference. First operand 37141 states and 40437 transitions. Second operand 4 states. [2020-12-22 02:27:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:27:57,477 INFO L93 Difference]: Finished difference Result 90044 states and 97820 transitions. [2020-12-22 02:27:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 02:27:57,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 723 [2020-12-22 02:27:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:27:57,546 INFO L225 Difference]: With dead ends: 90044 [2020-12-22 02:27:57,547 INFO L226 Difference]: Without dead ends: 53330 [2020-12-22 02:27:57,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:27:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53330 states. [2020-12-22 02:27:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53330 to 47789. [2020-12-22 02:27:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47789 states. [2020-12-22 02:27:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47789 states to 47789 states and 51968 transitions. [2020-12-22 02:27:58,104 INFO L78 Accepts]: Start accepts. Automaton has 47789 states and 51968 transitions. Word has length 723 [2020-12-22 02:27:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:27:58,105 INFO L481 AbstractCegarLoop]: Abstraction has 47789 states and 51968 transitions. [2020-12-22 02:27:58,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 02:27:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 47789 states and 51968 transitions. [2020-12-22 02:27:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2020-12-22 02:27:58,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:27:58,129 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:27:58,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 02:27:58,130 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:27:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:27:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash 804236495, now seen corresponding path program 1 times [2020-12-22 02:27:58,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:27:58,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34769183] [2020-12-22 02:27:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:27:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:27:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-12-22 02:27:59,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34769183] [2020-12-22 02:27:59,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:27:59,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:27:59,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715751336] [2020-12-22 02:27:59,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:27:59,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:27:59,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:27:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:27:59,656 INFO L87 Difference]: Start difference. First operand 47789 states and 51968 transitions. Second operand 3 states. [2020-12-22 02:28:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:28:07,665 INFO L93 Difference]: Finished difference Result 110071 states and 120014 transitions. [2020-12-22 02:28:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:28:07,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 743 [2020-12-22 02:28:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:28:07,748 INFO L225 Difference]: With dead ends: 110071 [2020-12-22 02:28:07,748 INFO L226 Difference]: Without dead ends: 61850 [2020-12-22 02:28:07,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:28:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61850 states. [2020-12-22 02:28:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61850 to 60557. [2020-12-22 02:28:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60557 states. [2020-12-22 02:28:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60557 states to 60557 states and 65605 transitions. [2020-12-22 02:28:08,940 INFO L78 Accepts]: Start accepts. Automaton has 60557 states and 65605 transitions. Word has length 743 [2020-12-22 02:28:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:28:08,941 INFO L481 AbstractCegarLoop]: Abstraction has 60557 states and 65605 transitions. [2020-12-22 02:28:08,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:28:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 60557 states and 65605 transitions. [2020-12-22 02:28:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-12-22 02:28:09,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:28:09,002 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:28:09,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 02:28:09,003 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:28:09,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:28:09,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1707512130, now seen corresponding path program 1 times [2020-12-22 02:28:09,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:28:09,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900158843] [2020-12-22 02:28:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:28:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:28:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2020-12-22 02:28:10,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900158843] [2020-12-22 02:28:10,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:28:10,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:28:10,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235643531] [2020-12-22 02:28:10,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:28:10,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:28:10,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:28:10,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:28:10,542 INFO L87 Difference]: Start difference. First operand 60557 states and 65605 transitions. Second operand 3 states. [2020-12-22 02:28:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:28:17,302 INFO L93 Difference]: Finished difference Result 123642 states and 133918 transitions. [2020-12-22 02:28:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 02:28:17,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 813 [2020-12-22 02:28:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:28:17,388 INFO L225 Difference]: With dead ends: 123642 [2020-12-22 02:28:17,388 INFO L226 Difference]: Without dead ends: 62656 [2020-12-22 02:28:17,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:28:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62656 states. [2020-12-22 02:28:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62656 to 61804. [2020-12-22 02:28:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61804 states. [2020-12-22 02:28:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61804 states to 61804 states and 66238 transitions. [2020-12-22 02:28:18,621 INFO L78 Accepts]: Start accepts. Automaton has 61804 states and 66238 transitions. Word has length 813 [2020-12-22 02:28:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:28:18,625 INFO L481 AbstractCegarLoop]: Abstraction has 61804 states and 66238 transitions. [2020-12-22 02:28:18,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 02:28:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 61804 states and 66238 transitions. [2020-12-22 02:28:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-12-22 02:28:18,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:28:18,682 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:28:18,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 02:28:18,682 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:28:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:28:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1712345726, now seen corresponding path program 1 times [2020-12-22 02:28:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:28:18,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980396108] [2020-12-22 02:28:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:28:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:28:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 233 proven. 347 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-12-22 02:28:20,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980396108] [2020-12-22 02:28:20,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116412049] [2020-12-22 02:28:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 02:28:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:28:21,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 02:28:21,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 02:28:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 457 proven. 286 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-12-22 02:28:25,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 02:28:25,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-12-22 02:28:25,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096131324] [2020-12-22 02:28:25,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 02:28:25,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:28:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 02:28:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 02:28:25,854 INFO L87 Difference]: Start difference. First operand 61804 states and 66238 transitions. Second operand 9 states. [2020-12-22 02:28:50,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:28:50,890 INFO L93 Difference]: Finished difference Result 126005 states and 134936 transitions. [2020-12-22 02:28:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 02:28:50,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 815 [2020-12-22 02:28:50,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:28:50,964 INFO L225 Difference]: With dead ends: 126005 [2020-12-22 02:28:50,964 INFO L226 Difference]: Without dead ends: 64199 [2020-12-22 02:28:50,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-12-22 02:28:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64199 states. [2020-12-22 02:28:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64199 to 55391. [2020-12-22 02:28:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55391 states. [2020-12-22 02:28:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55391 states to 55391 states and 58421 transitions. [2020-12-22 02:28:51,972 INFO L78 Accepts]: Start accepts. Automaton has 55391 states and 58421 transitions. Word has length 815 [2020-12-22 02:28:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:28:51,973 INFO L481 AbstractCegarLoop]: Abstraction has 55391 states and 58421 transitions. [2020-12-22 02:28:51,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 02:28:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 55391 states and 58421 transitions. [2020-12-22 02:28:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-12-22 02:28:52,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:28:52,009 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:28:52,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 02:28:52,212 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:28:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:28:52,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1225416634, now seen corresponding path program 1 times [2020-12-22 02:28:52,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:28:52,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603879631] [2020-12-22 02:28:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:28:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:28:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 730 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-12-22 02:28:53,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603879631] [2020-12-22 02:28:53,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:28:53,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 02:28:53,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603163642] [2020-12-22 02:28:53,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 02:28:53,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:28:53,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 02:28:53,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:28:53,681 INFO L87 Difference]: Start difference. First operand 55391 states and 58421 transitions. Second operand 4 states. [2020-12-22 02:29:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:29:11,413 INFO L93 Difference]: Finished difference Result 131239 states and 138287 transitions. [2020-12-22 02:29:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 02:29:11,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 884 [2020-12-22 02:29:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:29:11,528 INFO L225 Difference]: With dead ends: 131239 [2020-12-22 02:29:11,528 INFO L226 Difference]: Without dead ends: 74998 [2020-12-22 02:29:11,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:29:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74998 states. [2020-12-22 02:29:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74998 to 66453. [2020-12-22 02:29:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66453 states. [2020-12-22 02:29:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66453 states to 66453 states and 70051 transitions. [2020-12-22 02:29:13,011 INFO L78 Accepts]: Start accepts. Automaton has 66453 states and 70051 transitions. Word has length 884 [2020-12-22 02:29:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:29:13,012 INFO L481 AbstractCegarLoop]: Abstraction has 66453 states and 70051 transitions. [2020-12-22 02:29:13,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 02:29:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 66453 states and 70051 transitions. [2020-12-22 02:29:13,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2020-12-22 02:29:13,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:29:13,056 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:29:13,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 02:29:13,057 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:29:13,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:29:13,058 INFO L82 PathProgramCache]: Analyzing trace with hash 348437150, now seen corresponding path program 1 times [2020-12-22 02:29:13,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:29:13,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825342845] [2020-12-22 02:29:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:29:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:29:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1486 backedges. 1124 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-12-22 02:29:14,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825342845] [2020-12-22 02:29:14,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:29:14,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 02:29:14,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896692664] [2020-12-22 02:29:14,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 02:29:14,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:29:14,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 02:29:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:29:14,184 INFO L87 Difference]: Start difference. First operand 66453 states and 70051 transitions. Second operand 4 states. [2020-12-22 02:29:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 02:29:28,251 INFO L93 Difference]: Finished difference Result 141429 states and 149117 transitions. [2020-12-22 02:29:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 02:29:28,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 927 [2020-12-22 02:29:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 02:29:28,363 INFO L225 Difference]: With dead ends: 141429 [2020-12-22 02:29:28,363 INFO L226 Difference]: Without dead ends: 75403 [2020-12-22 02:29:28,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 02:29:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75403 states. [2020-12-22 02:29:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75403 to 68576. [2020-12-22 02:29:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68576 states. [2020-12-22 02:29:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68576 states to 68576 states and 72053 transitions. [2020-12-22 02:29:29,491 INFO L78 Accepts]: Start accepts. Automaton has 68576 states and 72053 transitions. Word has length 927 [2020-12-22 02:29:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 02:29:29,491 INFO L481 AbstractCegarLoop]: Abstraction has 68576 states and 72053 transitions. [2020-12-22 02:29:29,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 02:29:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 68576 states and 72053 transitions. [2020-12-22 02:29:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-12-22 02:29:29,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 02:29:29,528 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 02:29:29,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 02:29:29,529 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 02:29:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 02:29:29,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1994526173, now seen corresponding path program 1 times [2020-12-22 02:29:29,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 02:29:29,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603796046] [2020-12-22 02:29:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 02:29:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 02:29:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-12-22 02:29:30,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603796046] [2020-12-22 02:29:30,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 02:29:30,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 02:29:30,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881774779] [2020-12-22 02:29:30,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 02:29:30,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 02:29:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 02:29:30,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 02:29:30,713 INFO L87 Difference]: Start difference. First operand 68576 states and 72053 transitions. Second operand 3 states.