/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:49,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:49,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:49,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:49,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:49,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:49,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:49,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:49,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:49,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:49,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:49,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:49,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:49,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:49,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:49,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:49,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:49,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:49,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:49,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:49,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:49,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:49,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:49,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:49,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:49,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:49,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:49,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:49,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:49,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:49,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:49,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:49,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:49,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:49,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:49,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:49,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:49,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:49,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:49,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:49,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:49,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:38:49,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:49,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:49,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:49,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:49,913 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:49,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:49,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:49,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:49,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:49,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:49,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:49,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:49,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:49,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:49,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:49,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:49,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:49,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:49,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:49,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:49,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:49,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:49,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:49,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:49,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:49,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:49,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:49,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:49,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:49,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:38:50,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:50,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:50,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:50,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:50,438 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:50,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-24 22:38:50,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32925c81/dc66331f76bc48b699381992b001631a/FLAG90b21c7c1 [2020-09-24 22:38:51,101 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:51,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-24 22:38:51,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32925c81/dc66331f76bc48b699381992b001631a/FLAG90b21c7c1 [2020-09-24 22:38:51,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32925c81/dc66331f76bc48b699381992b001631a [2020-09-24 22:38:51,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:51,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:51,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:51,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:51,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:51,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51, skipping insertion in model container [2020-09-24 22:38:51,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:51,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:51,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:51,742 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:51,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:51,772 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:51,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51 WrapperNode [2020-09-24 22:38:51,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:51,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:51,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:51,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:51,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... [2020-09-24 22:38:51,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:51,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:51,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:51,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:51,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 22:38:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:51,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:38:51,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:38:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:52,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:52,239 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:52,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:52 BoogieIcfgContainer [2020-09-24 22:38:52,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:52,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:52,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:52,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:52,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:51" (1/3) ... [2020-09-24 22:38:52,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9aefb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:52, skipping insertion in model container [2020-09-24 22:38:52,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:51" (2/3) ... [2020-09-24 22:38:52,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9aefb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:52, skipping insertion in model container [2020-09-24 22:38:52,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:52" (3/3) ... [2020-09-24 22:38:52,265 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-24 22:38:52,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:52,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:52,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:52,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:52,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:52,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:52,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:52,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:52,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:52,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:52,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:38:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:52,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:52,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:52,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:38:52,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:52,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615409430] [2020-09-24 22:38:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:52,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 22:38:52,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:38:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:38:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:52,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:38:52,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:38:52,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615409430] [2020-09-24 22:38:52,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:52,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:52,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347510757] [2020-09-24 22:38:52,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:52,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:52,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:52,919 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:38:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:53,004 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:38:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:53,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:53,022 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:38:53,022 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:38:53,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:38:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:38:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:53,092 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:38:53,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:53,093 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:53,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:53,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:53,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:53,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:53,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:53,097 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:38:53,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:53,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560396288] [2020-09-24 22:38:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:38:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:53,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:53,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:53,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:38:53,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:53,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:38:53,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560396288] [2020-09-24 22:38:53,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:53,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:53,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044328205] [2020-09-24 22:38:53,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:53,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:53,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:53,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:53,389 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:38:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:53,428 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:38:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:53,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:53,430 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:38:53,431 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:53,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:38:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:53,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:38:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:53,441 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:53,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:53,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:53,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 22:38:53,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:53,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:38:53,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:53,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116939218] [2020-09-24 22:38:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:38:55,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:38:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-09-24 22:38:55,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:38:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:55,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:55,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:55,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:55,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:55,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:55,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:38:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-24 22:38:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:56,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:38:56,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:56,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:56,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:56,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:38:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:56,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:38:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:38:56,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116939218] [2020-09-24 22:38:56,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:56,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:38:56,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625777585] [2020-09-24 22:38:56,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:38:56,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:56,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:38:56,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:38:56,047 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-24 22:38:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:56,172 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:38:56,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:56,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:38:56,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:56,175 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:56,175 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:56,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:38:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:38:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:38:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:38:56,185 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:38:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:56,185 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:38:56,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:38:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:38:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:38:56,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:56,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 22:38:56,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:38:56,188 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:56,189 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:38:56,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:56,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298522256] [2020-09-24 22:38:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-09-24 22:38:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:38:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:57,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 22:38:57,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:38:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:38:57,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:38:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:57,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:38:57,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:38:57,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298522256] [2020-09-24 22:38:57,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:57,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:38:57,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817767333] [2020-09-24 22:38:57,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:38:57,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:38:57,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:38:57,547 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-24 22:38:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:57,646 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-09-24 22:38:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:38:57,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 22:38:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:57,649 INFO L225 Difference]: With dead ends: 47 [2020-09-24 22:38:57,649 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 22:38:57,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:38:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 22:38:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-24 22:38:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 22:38:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-24 22:38:57,660 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-24 22:38:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:57,660 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-24 22:38:57,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:38:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-24 22:38:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:38:57,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:57,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:57,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:57,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:57,664 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:38:57,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:57,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445749278] [2020-09-24 22:38:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:59,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:38:59,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:38:59,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-09-24 22:38:59,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:38:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:38:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:59,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:59,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:59,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:00,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-24 22:39:00,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:00,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:00,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:00,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:39:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:39:00,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445749278] [2020-09-24 22:39:00,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:00,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:00,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422250601] [2020-09-24 22:39:00,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:00,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:00,165 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-24 22:39:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:00,327 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-24 22:39:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:00,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:39:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:00,330 INFO L225 Difference]: With dead ends: 76 [2020-09-24 22:39:00,330 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:00,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:39:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:39:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-09-24 22:39:00,343 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 35 [2020-09-24 22:39:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:00,343 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-09-24 22:39:00,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-09-24 22:39:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:00,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:00,346 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 22:39:00,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:00,347 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 22:39:00,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:00,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927836335] [2020-09-24 22:39:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:05,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:05,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:05,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:39:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:39:05,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:05,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 22:39:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:39:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 22:39:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 22:39:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:39:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:39:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:05,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:05,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:05,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:39:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:05,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 22:39:05,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927836335] [2020-09-24 22:39:05,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:05,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:39:05,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318621340] [2020-09-24 22:39:05,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:39:05,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:05,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:39:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:05,824 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 11 states. [2020-09-24 22:39:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:05,953 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-09-24 22:39:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:39:05,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 22:39:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:05,958 INFO L225 Difference]: With dead ends: 55 [2020-09-24 22:39:05,958 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 22:39:05,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:39:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 22:39:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-09-24 22:39:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 22:39:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-09-24 22:39:05,968 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 52 [2020-09-24 22:39:05,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:05,969 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-09-24 22:39:05,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:39:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-09-24 22:39:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:05,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:05,973 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:05,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:05,973 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:05,974 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-24 22:39:05,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:05,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223865105] [2020-09-24 22:39:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:10,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:10,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:39:10,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:11,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:11,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:11,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:11,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:16,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:39:16,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:39:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 22:39:16,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:39:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:16,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 22:39:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:16,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:16,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:16,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2471 [2020-09-24 22:39:18,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:18,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:39:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:18,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:39:18,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 86 proven. 56 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-09-24 22:39:18,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223865105] [2020-09-24 22:39:18,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:18,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:18,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325472080] [2020-09-24 22:39:18,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:18,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:18,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:18,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:18,970 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 9 states. [2020-09-24 22:39:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:19,214 INFO L93 Difference]: Finished difference Result 122 states and 183 transitions. [2020-09-24 22:39:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:19,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 22:39:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:19,217 INFO L225 Difference]: With dead ends: 122 [2020-09-24 22:39:19,217 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 22:39:19,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:39:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 22:39:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2020-09-24 22:39:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2020-09-24 22:39:19,232 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 87 [2020-09-24 22:39:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:19,233 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2020-09-24 22:39:19,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2020-09-24 22:39:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:19,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:19,235 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:19,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:19,235 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:19,235 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 4 times [2020-09-24 22:39:19,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:19,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266743076] [2020-09-24 22:39:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:39:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:24,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:24,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:24,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:24,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:24,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:29,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:29,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:39:29,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:29,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:29,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 22:39:29,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:29,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:29,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 22:39:29,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:29,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:29,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 52 proven. 37 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 22:39:29,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266743076] [2020-09-24 22:39:29,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:29,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:39:29,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581951688] [2020-09-24 22:39:29,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:39:29,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:39:29,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:29,865 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand 10 states. [2020-09-24 22:39:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:30,095 INFO L93 Difference]: Finished difference Result 120 states and 170 transitions. [2020-09-24 22:39:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:30,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 22:39:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:30,097 INFO L225 Difference]: With dead ends: 120 [2020-09-24 22:39:30,098 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 22:39:30,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:39:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 22:39:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-24 22:39:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 22:39:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-09-24 22:39:30,115 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 69 [2020-09-24 22:39:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:30,115 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-09-24 22:39:30,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:39:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-09-24 22:39:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:39:30,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:30,118 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:30,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:30,118 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 5 times [2020-09-24 22:39:30,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:30,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104705944] [2020-09-24 22:39:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:35,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:35,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:39:37,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2036 [2020-09-24 22:39:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:40,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:40,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3303 [2020-09-24 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:40,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:40,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:40,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 22:39:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:40,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:40,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:40,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:40,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:39:40,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:40,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 69 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-24 22:39:40,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104705944] [2020-09-24 22:39:40,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:40,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:40,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330905518] [2020-09-24 22:39:40,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:40,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:40,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:40,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:40,750 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 9 states. [2020-09-24 22:39:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:40,887 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2020-09-24 22:39:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:40,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 22:39:40,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:40,888 INFO L225 Difference]: With dead ends: 96 [2020-09-24 22:39:40,889 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 22:39:40,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 22:39:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 22:39:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 22:39:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-09-24 22:39:40,899 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 70 [2020-09-24 22:39:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:40,903 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-09-24 22:39:40,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-09-24 22:39:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 22:39:40,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:40,904 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:40,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:40,906 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 6 times [2020-09-24 22:39:40,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:40,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833810663] [2020-09-24 22:39:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking...