/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/nr3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:53:48,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:53:48,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:53:48,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:53:48,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:53:48,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:53:48,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:53:48,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:53:48,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:53:48,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:53:48,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:53:48,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:53:48,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:53:48,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:53:48,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:53:48,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:53:48,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:53:48,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:53:48,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:53:48,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:53:48,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:53:48,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:53:48,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:53:48,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:53:48,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:53:48,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:53:48,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:53:48,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:53:48,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:53:48,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:53:48,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:53:48,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:53:48,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:53:48,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:53:48,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:53:48,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:53:48,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:53:48,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:53:48,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:53:48,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:53:48,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:53:48,859 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 [2020-10-27 14:53:48,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:53:48,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:53:48,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:53:48,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:53:48,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:53:48,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:53:48,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:53:48,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:53:48,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:53:48,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:53:48,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:53:48,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:53:48,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:53:48,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:53:48,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:53:48,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:53:48,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:53:48,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:53:48,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:53:48,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:53:48,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:53:48,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:53:48,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:53:48,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:53:48,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:53:48,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:53:48,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:53:48,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:53:48,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:53:48,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:53:49,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:53:49,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:53:49,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:53:49,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:53:49,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:53:49,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr3.c [2020-10-27 14:53:49,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63be64160/9799303d9d4344958d81c3dfb0c49a3c/FLAG34c1973b8 [2020-10-27 14:53:50,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:53:50,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr3.c [2020-10-27 14:53:50,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63be64160/9799303d9d4344958d81c3dfb0c49a3c/FLAG34c1973b8 [2020-10-27 14:53:50,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63be64160/9799303d9d4344958d81c3dfb0c49a3c [2020-10-27 14:53:50,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:53:50,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:53:50,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:53:50,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:53:50,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:53:50,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25565a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50, skipping insertion in model container [2020-10-27 14:53:50,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:53:50,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:53:50,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:53:50,716 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:53:50,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:53:50,756 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:53:50,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50 WrapperNode [2020-10-27 14:53:50,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:53:50,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:53:50,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:53:50,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:53:50,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (1/1) ... [2020-10-27 14:53:50,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:53:50,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:53:50,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:53:50,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:53:50,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (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 [2020-10-27 14:53:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:53:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:53:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:53:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:53:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:53:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:53:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:53:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:53:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:53:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:53:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:53:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:53:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:53:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:53:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:53:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:53:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:53:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:53:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:53:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:53:51,324 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:53:51,324 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:53:51,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:53:51 BoogieIcfgContainer [2020-10-27 14:53:51,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:53:51,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:53:51,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:53:51,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:53:51,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:53:50" (1/3) ... [2020-10-27 14:53:51,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67226fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:53:51, skipping insertion in model container [2020-10-27 14:53:51,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50" (2/3) ... [2020-10-27 14:53:51,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67226fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:53:51, skipping insertion in model container [2020-10-27 14:53:51,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:53:51" (3/3) ... [2020-10-27 14:53:51,339 INFO L111 eAbstractionObserver]: Analyzing ICFG nr3.c [2020-10-27 14:53:51,356 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:53:51,363 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:53:51,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:53:51,415 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:53:51,415 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:53:51,415 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:53:51,415 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:53:51,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:53:51,416 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:53:51,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:53:51,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:53:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-27 14:53:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:53:51,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:51,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:51,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash -71068241, now seen corresponding path program 1 times [2020-10-27 14:53:51,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:51,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900299394] [2020-10-27 14:53:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:52,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:53:52,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:53:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-27 14:53:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:53:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:52,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:53:52,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:52,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:52,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:53:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:53:52,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:53:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:52,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900299394] [2020-10-27 14:53:52,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:52,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:53:52,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074646247] [2020-10-27 14:53:52,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:53:52,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:53:52,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:53:52,374 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-27 14:53:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:52,513 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-10-27 14:53:52,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:53:52,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-27 14:53:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:52,523 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:53:52,523 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:53:52,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:53:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:53:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-27 14:53:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 14:53:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-27 14:53:52,573 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-27 14:53:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:52,574 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-27 14:53:52,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:53:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-27 14:53:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:53:52,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:52,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:52,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:53:52,576 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2036094566, now seen corresponding path program 1 times [2020-10-27 14:53:52,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:52,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577778054] [2020-10-27 14:53:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:53:53,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:53:53,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-27 14:53:53,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:53:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:53:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:53:53,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:53,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:53,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:53,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:53,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:53,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:53,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:53,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:53:53,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:53:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:53:53,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:53,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577778054] [2020-10-27 14:53:53,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:53,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 14:53:53,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742901092] [2020-10-27 14:53:53,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:53:53,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:53,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:53:53,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:53:53,752 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 9 states. [2020-10-27 14:53:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:54,233 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:53:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:53:54,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-27 14:53:54,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:54,237 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:53:54,237 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:53:54,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:53:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:53:54,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-27 14:53:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:53:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:53:54,253 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-27 14:53:54,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:54,254 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:53:54,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:53:54,254 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:53:54,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:53:54,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:54,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:54,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:53:54,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:54,257 INFO L82 PathProgramCache]: Analyzing trace with hash -640613893, now seen corresponding path program 1 times [2020-10-27 14:53:54,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:54,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048698945] [2020-10-27 14:53:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:54,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:53:54,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:54,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 14:53:54,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:53:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:53:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:54,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:54,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:54,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:54,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:54,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:54,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:54,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048698945] [2020-10-27 14:53:54,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:53:54,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:53:54,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472413787] [2020-10-27 14:53:54,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:53:54,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:54,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:53:54,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:53:54,421 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-27 14:53:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:54,512 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-27 14:53:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:53:54,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 14:53:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:54,514 INFO L225 Difference]: With dead ends: 54 [2020-10-27 14:53:54,514 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:53:54,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:53:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:53:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:53:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:53:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:53:54,524 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2020-10-27 14:53:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:54,525 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:53:54,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:53:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:53:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:53:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:54,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:54,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:53:54,528 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash 113037761, now seen corresponding path program 1 times [2020-10-27 14:53:54,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:54,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045208499] [2020-10-27 14:53:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:55,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 14:53:55,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:53:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-27 14:53:55,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:53:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:53:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:55,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:55,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:55,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:55,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:53:55,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:55,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:55,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:55,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:55,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:55,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:55,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:55,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:55,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:55,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:55,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:55,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:55,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:55,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:55,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045208499] [2020-10-27 14:53:55,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:55,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:53:55,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131873138] [2020-10-27 14:53:55,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:53:55,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:55,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:53:55,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:53:55,219 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-27 14:53:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:55,331 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-10-27 14:53:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:53:55,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-27 14:53:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:55,333 INFO L225 Difference]: With dead ends: 58 [2020-10-27 14:53:55,333 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 14:53:55,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:53:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 14:53:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-27 14:53:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:53:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-27 14:53:55,344 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2020-10-27 14:53:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:55,345 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-27 14:53:55,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:53:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-27 14:53:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:53:55,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:55,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:55,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:53:55,347 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:55,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1939561413, now seen corresponding path program 2 times [2020-10-27 14:53:55,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:55,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789991834] [2020-10-27 14:53:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:55,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:53:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:53:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-27 14:53:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:53:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:53:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:53:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:56,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:53:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:56,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:56,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:56,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:56,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:53:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:56,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789991834] [2020-10-27 14:53:56,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:56,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:53:56,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996218164] [2020-10-27 14:53:56,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:53:56,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:56,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:53:56,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:53:56,388 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-10-27 14:53:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:53:56,515 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-10-27 14:53:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:53:56,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-27 14:53:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:53:56,517 INFO L225 Difference]: With dead ends: 62 [2020-10-27 14:53:56,517 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:53:56,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:53:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:53:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-27 14:53:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:53:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-27 14:53:56,527 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 32 [2020-10-27 14:53:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:53:56,527 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-27 14:53:56,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:53:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-27 14:53:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:53:56,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:53:56,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:53:56,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:53:56,529 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:53:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:53:56,530 INFO L82 PathProgramCache]: Analyzing trace with hash 822806401, now seen corresponding path program 3 times [2020-10-27 14:53:56,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:53:56,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802843437] [2020-10-27 14:53:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:53:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:58,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:53:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:53:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-27 14:53:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:53:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:53:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:53:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:53:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:59,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:53:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:53:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:53:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:53:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:53:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:53:59,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:53:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:53:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:53:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:53:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:53:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:53:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:53:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:53:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:53:59,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802843437] [2020-10-27 14:53:59,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:53:59,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:53:59,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784730306] [2020-10-27 14:53:59,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:53:59,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:53:59,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:53:59,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:53:59,155 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 13 states. [2020-10-27 14:54:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:01,266 INFO L93 Difference]: Finished difference Result 137 states and 177 transitions. [2020-10-27 14:54:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:54:01,267 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-27 14:54:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:01,273 INFO L225 Difference]: With dead ends: 137 [2020-10-27 14:54:01,273 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 14:54:01,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=294, Invalid=1512, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:54:01,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 14:54:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 77. [2020-10-27 14:54:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:54:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-10-27 14:54:01,315 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 35 [2020-10-27 14:54:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:01,317 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-10-27 14:54:01,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:54:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-10-27 14:54:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:54:01,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:01,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:01,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:54:01,323 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:01,324 INFO L82 PathProgramCache]: Analyzing trace with hash 765548099, now seen corresponding path program 1 times [2020-10-27 14:54:01,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:01,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780224390] [2020-10-27 14:54:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:04,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:54:04,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:54:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2938 [2020-10-27 14:54:04,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:54:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:54:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:04,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:04,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:04,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:54:04,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:04,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:04,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:54:04,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780224390] [2020-10-27 14:54:04,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:54:04,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:54:04,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983142449] [2020-10-27 14:54:04,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:54:04,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:04,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:54:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:54:04,396 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 6 states. [2020-10-27 14:54:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:04,615 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2020-10-27 14:54:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:54:04,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 14:54:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:04,618 INFO L225 Difference]: With dead ends: 86 [2020-10-27 14:54:04,618 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:54:04,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:54:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:54:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-27 14:54:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:54:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2020-10-27 14:54:04,652 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 35 [2020-10-27 14:54:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:04,653 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2020-10-27 14:54:04,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:54:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2020-10-27 14:54:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:54:04,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:04,657 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, 1] [2020-10-27 14:54:04,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:54:04,657 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash 236000387, now seen corresponding path program 1 times [2020-10-27 14:54:04,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:04,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60608526] [2020-10-27 14:54:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:05,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:54:05,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:54:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-27 14:54:05,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:54:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:54:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:06,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:54:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:06,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:06,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:06,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:06,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:54:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:54:06,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60608526] [2020-10-27 14:54:06,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:06,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:54:06,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815855415] [2020-10-27 14:54:06,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:54:06,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:06,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:54:06,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:54:06,171 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 14 states. [2020-10-27 14:54:06,905 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-27 14:54:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:07,956 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-27 14:54:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:54:07,960 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-27 14:54:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:07,962 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:54:07,962 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 14:54:07,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:54:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 14:54:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 84. [2020-10-27 14:54:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:54:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2020-10-27 14:54:07,981 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 35 [2020-10-27 14:54:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:07,981 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2020-10-27 14:54:07,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:54:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2020-10-27 14:54:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:54:07,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:07,982 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, 1] [2020-10-27 14:54:07,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:54:07,983 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:07,983 INFO L82 PathProgramCache]: Analyzing trace with hash -785067967, now seen corresponding path program 2 times [2020-10-27 14:54:07,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:07,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493183966] [2020-10-27 14:54:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:09,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:54:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:09,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:09,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:09,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:09,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:09,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:09,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:09,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:54:09,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493183966] [2020-10-27 14:54:09,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:09,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:54:09,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147918783] [2020-10-27 14:54:09,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:54:09,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:09,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:54:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:54:09,510 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand 13 states. [2020-10-27 14:54:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:12,082 INFO L93 Difference]: Finished difference Result 172 states and 218 transitions. [2020-10-27 14:54:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:54:12,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-27 14:54:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:12,088 INFO L225 Difference]: With dead ends: 172 [2020-10-27 14:54:12,088 INFO L226 Difference]: Without dead ends: 155 [2020-10-27 14:54:12,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=388, Invalid=1964, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:54:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-27 14:54:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-10-27 14:54:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 14:54:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2020-10-27 14:54:12,137 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 35 [2020-10-27 14:54:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:12,139 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2020-10-27 14:54:12,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:54:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2020-10-27 14:54:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:54:12,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:12,145 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, 1] [2020-10-27 14:54:12,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:54:12,145 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:12,146 INFO L82 PathProgramCache]: Analyzing trace with hash -866137341, now seen corresponding path program 3 times [2020-10-27 14:54:12,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:12,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316503002] [2020-10-27 14:54:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:15,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:54:15,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:54:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2861 [2020-10-27 14:54:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:54:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:54:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:54:15,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:15,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:15,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:54:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:15,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:15,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:15,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:15,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:54:15,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316503002] [2020-10-27 14:54:15,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:54:15,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:54:15,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615309942] [2020-10-27 14:54:15,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:54:15,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:15,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:54:15,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:54:15,106 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand 5 states. [2020-10-27 14:54:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:15,227 INFO L93 Difference]: Finished difference Result 180 states and 234 transitions. [2020-10-27 14:54:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:54:15,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-27 14:54:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:15,230 INFO L225 Difference]: With dead ends: 180 [2020-10-27 14:54:15,230 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:54:15,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:54:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:54:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 85. [2020-10-27 14:54:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 14:54:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2020-10-27 14:54:15,244 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 35 [2020-10-27 14:54:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:15,244 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2020-10-27 14:54:15,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:54:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2020-10-27 14:54:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:54:15,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:15,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:15,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:54:15,253 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1820955587, now seen corresponding path program 1 times [2020-10-27 14:54:15,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:15,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167016252] [2020-10-27 14:54:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:16,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:16,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:54:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:54:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-10-27 14:54:16,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:54:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:54:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:16,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:16,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:16,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:54:16,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:16,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:16,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:16,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:16,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:54:16,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167016252] [2020-10-27 14:54:16,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:16,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:54:16,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017923226] [2020-10-27 14:54:16,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:54:16,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:54:16,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:54:16,903 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 14 states. [2020-10-27 14:54:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:18,802 INFO L93 Difference]: Finished difference Result 161 states and 201 transitions. [2020-10-27 14:54:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:54:18,803 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-27 14:54:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:18,806 INFO L225 Difference]: With dead ends: 161 [2020-10-27 14:54:18,806 INFO L226 Difference]: Without dead ends: 158 [2020-10-27 14:54:18,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:54:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-27 14:54:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 102. [2020-10-27 14:54:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 14:54:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2020-10-27 14:54:18,824 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 35 [2020-10-27 14:54:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:18,825 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2020-10-27 14:54:18,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:54:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2020-10-27 14:54:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:54:18,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:18,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:18,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:54:18,827 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash 312583235, now seen corresponding path program 1 times [2020-10-27 14:54:18,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:18,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128976910] [2020-10-27 14:54:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:20,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:20,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:54:20,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:54:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-10-27 14:54:20,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:54:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:54:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:21,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:21,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:21,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:54:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:21,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:21,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:21,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:54:21,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128976910] [2020-10-27 14:54:21,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:21,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:54:21,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033430966] [2020-10-27 14:54:21,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:54:21,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:21,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:54:21,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:54:21,371 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand 15 states. [2020-10-27 14:54:23,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:23,105 INFO L93 Difference]: Finished difference Result 215 states and 270 transitions. [2020-10-27 14:54:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:54:23,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-27 14:54:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:23,107 INFO L225 Difference]: With dead ends: 215 [2020-10-27 14:54:23,107 INFO L226 Difference]: Without dead ends: 160 [2020-10-27 14:54:23,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:54:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-27 14:54:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 120. [2020-10-27 14:54:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:54:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 146 transitions. [2020-10-27 14:54:23,140 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 146 transitions. Word has length 44 [2020-10-27 14:54:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:23,141 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 146 transitions. [2020-10-27 14:54:23,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:54:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 146 transitions. [2020-10-27 14:54:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:54:23,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:23,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:23,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:54:23,143 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:23,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:23,144 INFO L82 PathProgramCache]: Analyzing trace with hash 531437953, now seen corresponding path program 1 times [2020-10-27 14:54:23,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:23,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235690887] [2020-10-27 14:54:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:25,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:54:25,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:54:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-27 14:54:25,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:54:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 14:54:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:25,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:54:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:25,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:25,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:25,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:25,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:25,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:54:25,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235690887] [2020-10-27 14:54:25,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:25,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:54:25,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145800753] [2020-10-27 14:54:25,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:54:25,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:25,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:54:25,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:54:25,830 INFO L87 Difference]: Start difference. First operand 120 states and 146 transitions. Second operand 16 states. [2020-10-27 14:54:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:27,378 INFO L93 Difference]: Finished difference Result 207 states and 254 transitions. [2020-10-27 14:54:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:54:27,379 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-27 14:54:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:27,381 INFO L225 Difference]: With dead ends: 207 [2020-10-27 14:54:27,381 INFO L226 Difference]: Without dead ends: 204 [2020-10-27 14:54:27,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:54:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-27 14:54:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 177. [2020-10-27 14:54:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-27 14:54:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 218 transitions. [2020-10-27 14:54:27,413 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 218 transitions. Word has length 44 [2020-10-27 14:54:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:27,414 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 218 transitions. [2020-10-27 14:54:27,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:54:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 218 transitions. [2020-10-27 14:54:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:54:27,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:27,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:27,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:54:27,416 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:27,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1117350205, now seen corresponding path program 1 times [2020-10-27 14:54:27,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:27,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894257548] [2020-10-27 14:54:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:28,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:54:28,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:54:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-27 14:54:28,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:54:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:28,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 14:54:28,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:28,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:28,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:28,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:28,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:28,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:28,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:28,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:54:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:28,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:28,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:28,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:28,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:54:28,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894257548] [2020-10-27 14:54:28,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:28,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:54:28,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412266019] [2020-10-27 14:54:28,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:54:28,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:54:28,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:54:28,600 INFO L87 Difference]: Start difference. First operand 177 states and 218 transitions. Second operand 14 states. [2020-10-27 14:54:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:30,488 INFO L93 Difference]: Finished difference Result 334 states and 420 transitions. [2020-10-27 14:54:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:54:30,489 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-27 14:54:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:30,492 INFO L225 Difference]: With dead ends: 334 [2020-10-27 14:54:30,493 INFO L226 Difference]: Without dead ends: 331 [2020-10-27 14:54:30,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:54:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-27 14:54:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 173. [2020-10-27 14:54:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 14:54:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 212 transitions. [2020-10-27 14:54:30,530 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 212 transitions. Word has length 44 [2020-10-27 14:54:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:30,530 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 212 transitions. [2020-10-27 14:54:30,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:54:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 212 transitions. [2020-10-27 14:54:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 14:54:30,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:30,532 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:30,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:54:30,532 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:30,532 INFO L82 PathProgramCache]: Analyzing trace with hash -216783446, now seen corresponding path program 4 times [2020-10-27 14:54:30,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:30,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753821418] [2020-10-27 14:54:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:35,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:54:35,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-27 14:54:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 14:54:35,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:54:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:54:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:54:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:35,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:35,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:54:35,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:35,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:35,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:54:35,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753821418] [2020-10-27 14:54:35,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:35,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:54:35,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929449164] [2020-10-27 14:54:35,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:54:35,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:35,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:54:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:54:35,697 INFO L87 Difference]: Start difference. First operand 173 states and 212 transitions. Second operand 9 states. [2020-10-27 14:54:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:35,944 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2020-10-27 14:54:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:54:35,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-27 14:54:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:35,946 INFO L225 Difference]: With dead ends: 236 [2020-10-27 14:54:35,946 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 14:54:35,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:54:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 14:54:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2020-10-27 14:54:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:54:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-27 14:54:35,965 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 47 [2020-10-27 14:54:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:35,966 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-27 14:54:35,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:54:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-27 14:54:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:54:35,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:35,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:35,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:54:35,967 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2053259713, now seen corresponding path program 2 times [2020-10-27 14:54:35,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:35,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283978706] [2020-10-27 14:54:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:54:38,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:54:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2285 [2020-10-27 14:54:38,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:38,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:54:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:54:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:38,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:38,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:38,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:38,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:38,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:54:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:38,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:54:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:38,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:38,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:54:38,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283978706] [2020-10-27 14:54:38,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:38,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:54:38,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262345572] [2020-10-27 14:54:38,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:54:38,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:38,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:54:38,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:54:38,508 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 12 states. [2020-10-27 14:54:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:39,369 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2020-10-27 14:54:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:54:39,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-27 14:54:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:39,371 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:54:39,371 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 14:54:39,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:54:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 14:54:39,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 94. [2020-10-27 14:54:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:54:39,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-10-27 14:54:39,392 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 53 [2020-10-27 14:54:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:39,392 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-10-27 14:54:39,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:54:39,393 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-10-27 14:54:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:54:39,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:39,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:39,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:54:39,394 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1474995909, now seen corresponding path program 2 times [2020-10-27 14:54:39,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:39,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114329023] [2020-10-27 14:54:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:44,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:54:44,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:54:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:54:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:54:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:54:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:44,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:44,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:44,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:54:44,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:44,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:44,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:44,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:54:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:44,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:44,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:44,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:54:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:44,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:44,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:54:44,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114329023] [2020-10-27 14:54:44,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:44,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:54:44,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008788102] [2020-10-27 14:54:44,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:54:44,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:44,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:54:44,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:54:44,982 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 17 states. [2020-10-27 14:54:45,829 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-27 14:54:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:47,435 INFO L93 Difference]: Finished difference Result 144 states and 164 transitions. [2020-10-27 14:54:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:54:47,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-27 14:54:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:47,437 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:54:47,438 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 14:54:47,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:54:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 14:54:47,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 104. [2020-10-27 14:54:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:54:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2020-10-27 14:54:47,463 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 53 [2020-10-27 14:54:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:47,464 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2020-10-27 14:54:47,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:54:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2020-10-27 14:54:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:54:47,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:47,465 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:47,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:54:47,466 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash 287830531, now seen corresponding path program 3 times [2020-10-27 14:54:47,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:47,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611049733] [2020-10-27 14:54:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:54:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 14:54:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:50,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:50,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:54:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:50,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:54:50,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:54:50,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:54:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:54:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:54:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:50,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:54:50,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:54:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:50,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:50,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:50,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:50,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:54:50,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611049733] [2020-10-27 14:54:50,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:50,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:54:50,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166225440] [2020-10-27 14:54:50,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:54:50,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:54:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:54:50,707 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand 13 states. [2020-10-27 14:54:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:51,622 INFO L93 Difference]: Finished difference Result 195 states and 221 transitions. [2020-10-27 14:54:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:54:51,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-27 14:54:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:51,629 INFO L225 Difference]: With dead ends: 195 [2020-10-27 14:54:51,630 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 14:54:51,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:54:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 14:54:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 110. [2020-10-27 14:54:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:54:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-10-27 14:54:51,672 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 62 [2020-10-27 14:54:51,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:51,673 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-10-27 14:54:51,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:54:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-10-27 14:54:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:54:51,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:51,679 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:51,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:54:51,679 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1922675140, now seen corresponding path program 4 times [2020-10-27 14:54:51,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:51,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790964772] [2020-10-27 14:54:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 14:54:56,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:54:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:54:56,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:54:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:54:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:54:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:54:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:54:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:54:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:54:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:54:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:54:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:54:56,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:54:56,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:54:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:54:56,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:54:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:54:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:54:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:54:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:54:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 9 proven. 64 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 14:54:56,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790964772] [2020-10-27 14:54:56,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:54:56,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:54:56,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888076858] [2020-10-27 14:54:56,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:54:56,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:54:56,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:54:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:54:56,967 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 12 states. [2020-10-27 14:54:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:54:57,922 INFO L93 Difference]: Finished difference Result 224 states and 262 transitions. [2020-10-27 14:54:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:54:57,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-27 14:54:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:54:57,926 INFO L225 Difference]: With dead ends: 224 [2020-10-27 14:54:57,927 INFO L226 Difference]: Without dead ends: 207 [2020-10-27 14:54:57,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:54:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-27 14:54:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 142. [2020-10-27 14:54:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 14:54:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-10-27 14:54:57,978 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 74 [2020-10-27 14:54:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:54:57,979 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-10-27 14:54:57,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:54:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-10-27 14:54:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:54:57,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:54:57,981 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:54:57,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:54:57,981 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:54:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:54:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1124947704, now seen corresponding path program 3 times [2020-10-27 14:54:57,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:54:57,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038644390] [2020-10-27 14:54:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:54:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:54:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:54:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:55:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:03,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:03,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:55:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:03,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:55:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:03,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:55:03,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038644390] [2020-10-27 14:55:03,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:03,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:55:03,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109263044] [2020-10-27 14:55:03,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:55:03,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:03,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:55:03,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:55:03,430 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 15 states. [2020-10-27 14:55:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:04,349 INFO L93 Difference]: Finished difference Result 178 states and 207 transitions. [2020-10-27 14:55:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:55:04,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 14:55:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:04,351 INFO L225 Difference]: With dead ends: 178 [2020-10-27 14:55:04,351 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 14:55:04,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:55:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 14:55:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-27 14:55:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:55:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 157 transitions. [2020-10-27 14:55:04,382 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 157 transitions. Word has length 74 [2020-10-27 14:55:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:04,383 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 157 transitions. [2020-10-27 14:55:04,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:55:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 157 transitions. [2020-10-27 14:55:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:55:04,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:04,384 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:04,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:55:04,385 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:04,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1258961210, now seen corresponding path program 4 times [2020-10-27 14:55:04,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:04,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323574023] [2020-10-27 14:55:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:09,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:09,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 14:55:09,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:55:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:55:09,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:55:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:55:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:09,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:09,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:09,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:09,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:55:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:10,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:10,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:10,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:10,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:55:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:10,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:10,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:10,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:10,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:10,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:10,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 14:55:10,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323574023] [2020-10-27 14:55:10,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:10,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:55:10,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158819591] [2020-10-27 14:55:10,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:55:10,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:10,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:55:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:55:10,026 INFO L87 Difference]: Start difference. First operand 136 states and 157 transitions. Second operand 20 states. [2020-10-27 14:55:11,079 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-27 14:55:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:12,572 INFO L93 Difference]: Finished difference Result 229 states and 267 transitions. [2020-10-27 14:55:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:55:12,573 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-27 14:55:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:12,575 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:55:12,575 INFO L226 Difference]: Without dead ends: 212 [2020-10-27 14:55:12,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:55:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-27 14:55:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 150. [2020-10-27 14:55:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-27 14:55:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-10-27 14:55:12,629 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 74 [2020-10-27 14:55:12,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:12,629 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-10-27 14:55:12,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:55:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-10-27 14:55:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:55:12,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:12,631 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:12,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:55:12,631 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash -214253592, now seen corresponding path program 5 times [2020-10-27 14:55:12,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:12,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226230751] [2020-10-27 14:55:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:12,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:17,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 14:55:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:55:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:55:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:18,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:18,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:55:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:18,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:18,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:55:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:18,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:18,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:18,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:18,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:18,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 87 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:55:18,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226230751] [2020-10-27 14:55:18,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:18,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:55:18,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781369292] [2020-10-27 14:55:18,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:55:18,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:18,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:55:18,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:55:18,426 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 19 states. [2020-10-27 14:55:18,710 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-27 14:55:19,891 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-27 14:55:20,055 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-27 14:55:20,757 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-27 14:55:21,304 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-27 14:55:22,010 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-27 14:55:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:22,063 INFO L93 Difference]: Finished difference Result 235 states and 276 transitions. [2020-10-27 14:55:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:55:22,067 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-10-27 14:55:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:22,069 INFO L225 Difference]: With dead ends: 235 [2020-10-27 14:55:22,069 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:55:22,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:55:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:55:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 184. [2020-10-27 14:55:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 14:55:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 216 transitions. [2020-10-27 14:55:22,120 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 216 transitions. Word has length 83 [2020-10-27 14:55:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:22,121 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 216 transitions. [2020-10-27 14:55:22,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:55:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 216 transitions. [2020-10-27 14:55:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:55:22,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:22,122 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:22,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:55:22,123 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:22,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1597788842, now seen corresponding path program 5 times [2020-10-27 14:55:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:22,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189347694] [2020-10-27 14:55:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 14:55:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:27,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:27,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:55:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:55:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:55:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:55:27,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189347694] [2020-10-27 14:55:27,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:27,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:55:27,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342763242] [2020-10-27 14:55:27,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:55:27,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:55:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:55:27,503 INFO L87 Difference]: Start difference. First operand 184 states and 216 transitions. Second operand 15 states. [2020-10-27 14:55:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:28,981 INFO L93 Difference]: Finished difference Result 310 states and 365 transitions. [2020-10-27 14:55:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:55:28,982 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-10-27 14:55:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:28,985 INFO L225 Difference]: With dead ends: 310 [2020-10-27 14:55:28,986 INFO L226 Difference]: Without dead ends: 293 [2020-10-27 14:55:28,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:55:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-27 14:55:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 161. [2020-10-27 14:55:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 14:55:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 189 transitions. [2020-10-27 14:55:29,030 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 189 transitions. Word has length 83 [2020-10-27 14:55:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:29,031 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 189 transitions. [2020-10-27 14:55:29,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:55:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 189 transitions. [2020-10-27 14:55:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:55:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:29,032 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:29,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:55:29,033 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 752605939, now seen corresponding path program 6 times [2020-10-27 14:55:29,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:29,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116270793] [2020-10-27 14:55:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:34,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:55:34,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:55:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:55:34,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:55:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:55:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:55:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:34,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:34,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:34,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:34,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:34,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:34,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:34,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:34,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 14:55:34,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116270793] [2020-10-27 14:55:34,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:34,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:55:34,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041926587] [2020-10-27 14:55:34,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:55:34,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:55:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:55:34,171 INFO L87 Difference]: Start difference. First operand 161 states and 189 transitions. Second operand 6 states. [2020-10-27 14:55:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:34,412 INFO L93 Difference]: Finished difference Result 283 states and 341 transitions. [2020-10-27 14:55:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:55:34,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-27 14:55:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:34,416 INFO L225 Difference]: With dead ends: 283 [2020-10-27 14:55:34,417 INFO L226 Difference]: Without dead ends: 223 [2020-10-27 14:55:34,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:55:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-27 14:55:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 173. [2020-10-27 14:55:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 14:55:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 202 transitions. [2020-10-27 14:55:34,474 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 202 transitions. Word has length 86 [2020-10-27 14:55:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:34,474 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 202 transitions. [2020-10-27 14:55:34,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:55:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 202 transitions. [2020-10-27 14:55:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:55:34,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:34,476 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:34,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:55:34,478 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:34,479 INFO L82 PathProgramCache]: Analyzing trace with hash -632214029, now seen corresponding path program 7 times [2020-10-27 14:55:34,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:34,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635619351] [2020-10-27 14:55:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:55:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:55:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:39,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:39,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:39,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:39,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:39,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:39,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 103 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 14:55:39,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635619351] [2020-10-27 14:55:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:55:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255997247] [2020-10-27 14:55:39,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:55:39,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:55:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:55:39,627 INFO L87 Difference]: Start difference. First operand 173 states and 202 transitions. Second operand 8 states. [2020-10-27 14:55:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:39,869 INFO L93 Difference]: Finished difference Result 267 states and 314 transitions. [2020-10-27 14:55:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:55:39,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-27 14:55:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:39,874 INFO L225 Difference]: With dead ends: 267 [2020-10-27 14:55:39,874 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 14:55:39,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:55:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 14:55:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 14:55:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:55:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2020-10-27 14:55:39,921 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 86 [2020-10-27 14:55:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:39,922 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2020-10-27 14:55:39,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:55:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2020-10-27 14:55:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:55:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:39,923 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:39,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:55:39,924 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2004021327, now seen corresponding path program 8 times [2020-10-27 14:55:39,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:39,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802128174] [2020-10-27 14:55:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:39,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:55:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:45,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:55:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:45,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:55:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:45,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:55:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:45,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 141 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 14:55:45,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802128174] [2020-10-27 14:55:45,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:45,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:55:45,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115017374] [2020-10-27 14:55:45,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:55:45,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:45,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:55:45,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:55:45,636 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand 18 states. [2020-10-27 14:55:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:47,205 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2020-10-27 14:55:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:55:47,206 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2020-10-27 14:55:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:47,208 INFO L225 Difference]: With dead ends: 148 [2020-10-27 14:55:47,208 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:55:47,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:55:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:55:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 84. [2020-10-27 14:55:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:55:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-27 14:55:47,235 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 86 [2020-10-27 14:55:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:47,235 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-27 14:55:47,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:55:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-27 14:55:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 14:55:47,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:47,237 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:47,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:55:47,237 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash -277358790, now seen corresponding path program 9 times [2020-10-27 14:55:47,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:47,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609176786] [2020-10-27 14:55:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:55:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:52,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:55:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:55:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:52,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:52,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:52,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:52,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:55:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:55:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:52,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:52,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:52,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:52,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:52,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 10 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-27 14:55:52,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609176786] [2020-10-27 14:55:52,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:52,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:55:52,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960051697] [2020-10-27 14:55:52,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:55:52,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:52,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:55:52,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:55:52,736 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 18 states. [2020-10-27 14:55:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:54,489 INFO L93 Difference]: Finished difference Result 148 states and 168 transitions. [2020-10-27 14:55:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:55:54,490 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 92 [2020-10-27 14:55:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:54,491 INFO L225 Difference]: With dead ends: 148 [2020-10-27 14:55:54,491 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 14:55:54,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:55:54,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 14:55:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 130. [2020-10-27 14:55:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:55:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2020-10-27 14:55:54,531 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 92 [2020-10-27 14:55:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:54,532 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2020-10-27 14:55:54,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:55:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2020-10-27 14:55:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:55:54,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:54,533 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:54,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:55:54,534 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1828145452, now seen corresponding path program 10 times [2020-10-27 14:55:54,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:54,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141750857] [2020-10-27 14:55:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:55:55,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:55:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 14:55:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:55:55,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:55:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:55:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:55:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:55:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:55,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:55:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:55:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:55,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:55:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:55,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:55:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 105 proven. 38 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:55:55,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141750857] [2020-10-27 14:55:55,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:55,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:55:55,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959739615] [2020-10-27 14:55:55,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:55:55,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:55,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:55:55,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:55:55,899 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 17 states. [2020-10-27 14:55:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:57,105 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2020-10-27 14:55:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:55:57,106 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-10-27 14:55:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:57,107 INFO L225 Difference]: With dead ends: 170 [2020-10-27 14:55:57,108 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 14:55:57,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:55:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 14:55:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2020-10-27 14:55:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:55:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-10-27 14:55:57,137 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 101 [2020-10-27 14:55:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:57,137 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-10-27 14:55:57,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:55:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-10-27 14:55:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:55:57,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:57,140 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:55:57,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:55:57,140 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1738236431, now seen corresponding path program 11 times [2020-10-27 14:55:57,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:57,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351501220] [2020-10-27 14:55:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:56:02,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:56:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:56:02,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:56:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 14:56:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:56:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:02,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 12 proven. 191 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-27 14:56:02,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351501220] [2020-10-27 14:56:02,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:02,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:56:02,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480901065] [2020-10-27 14:56:02,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:56:02,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:02,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:56:02,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:56:02,941 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 20 states. [2020-10-27 14:56:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:05,934 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-27 14:56:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:56:05,935 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-27 14:56:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:05,937 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:56:05,937 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 14:56:05,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=257, Invalid=1723, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:56:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 14:56:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2020-10-27 14:56:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 14:56:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2020-10-27 14:56:05,967 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 104 [2020-10-27 14:56:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:05,968 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2020-10-27 14:56:05,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:56:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2020-10-27 14:56:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 14:56:05,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:05,969 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:05,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:56:05,970 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2072584277, now seen corresponding path program 12 times [2020-10-27 14:56:05,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640964524] [2020-10-27 14:56:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 14:56:11,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:56:11,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:56:11,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:56:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 14:56:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:12,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:56:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:12,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:12,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:12,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 232 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:56:12,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640964524] [2020-10-27 14:56:12,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:12,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:56:12,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710132914] [2020-10-27 14:56:12,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:56:12,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:56:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:56:12,253 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 28 states. [2020-10-27 14:56:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:15,878 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2020-10-27 14:56:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:56:15,882 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 113 [2020-10-27 14:56:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:15,884 INFO L225 Difference]: With dead ends: 192 [2020-10-27 14:56:15,884 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:56:15,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=252, Invalid=3170, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:56:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:56:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 153. [2020-10-27 14:56:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-27 14:56:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2020-10-27 14:56:15,942 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 113 [2020-10-27 14:56:15,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:15,942 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2020-10-27 14:56:15,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:56:15,942 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2020-10-27 14:56:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 14:56:15,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:15,944 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:15,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:56:15,945 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -447727121, now seen corresponding path program 13 times [2020-10-27 14:56:15,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:15,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341297210] [2020-10-27 14:56:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 14:56:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:21,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:21,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:21,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:56:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:21,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:21,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:21,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:21,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:21,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:21,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:21,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:21,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 21 proven. 242 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-27 14:56:21,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341297210] [2020-10-27 14:56:21,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:21,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:56:21,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176726023] [2020-10-27 14:56:21,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:56:21,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:56:21,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:56:21,720 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand 19 states. [2020-10-27 14:56:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:24,040 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-10-27 14:56:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:56:24,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-27 14:56:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:24,044 INFO L225 Difference]: With dead ends: 198 [2020-10-27 14:56:24,045 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 14:56:24,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=1466, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:56:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 14:56:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 164. [2020-10-27 14:56:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 14:56:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2020-10-27 14:56:24,105 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 122 [2020-10-27 14:56:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:24,105 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2020-10-27 14:56:24,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:56:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2020-10-27 14:56:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:56:24,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:24,107 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:24,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:56:24,108 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:24,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:24,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1980531198, now seen corresponding path program 14 times [2020-10-27 14:56:24,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:24,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715276103] [2020-10-27 14:56:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:26,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 14:56:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:30,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:56:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:56:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:56:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:56:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:30,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:56:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:56:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:30,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 18 proven. 331 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:56:30,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715276103] [2020-10-27 14:56:30,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:30,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:56:30,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409692444] [2020-10-27 14:56:30,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:56:30,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:30,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:56:30,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:56:30,339 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand 24 states. [2020-10-27 14:56:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:36,023 INFO L93 Difference]: Finished difference Result 227 states and 254 transitions. [2020-10-27 14:56:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 14:56:36,024 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 125 [2020-10-27 14:56:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:36,027 INFO L225 Difference]: With dead ends: 227 [2020-10-27 14:56:36,027 INFO L226 Difference]: Without dead ends: 205 [2020-10-27 14:56:36,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=430, Invalid=3110, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:56:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-27 14:56:36,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 116. [2020-10-27 14:56:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:56:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-10-27 14:56:36,068 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 125 [2020-10-27 14:56:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:36,068 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-10-27 14:56:36,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:56:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-10-27 14:56:36,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 14:56:36,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:36,070 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:36,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:56:36,070 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1415361131, now seen corresponding path program 15 times [2020-10-27 14:56:36,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:36,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572476092] [2020-10-27 14:56:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 14:56:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:41,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:41,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:56:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 16 proven. 297 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 14:56:42,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572476092] [2020-10-27 14:56:42,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:42,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:56:42,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538144201] [2020-10-27 14:56:42,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:56:42,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:42,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:56:42,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:56:42,016 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 26 states. [2020-10-27 14:56:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:45,572 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2020-10-27 14:56:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:56:45,574 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 131 [2020-10-27 14:56:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:45,576 INFO L225 Difference]: With dead ends: 198 [2020-10-27 14:56:45,576 INFO L226 Difference]: Without dead ends: 195 [2020-10-27 14:56:45,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=227, Invalid=3195, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:56:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-27 14:56:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 178. [2020-10-27 14:56:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 14:56:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-10-27 14:56:45,648 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 131 [2020-10-27 14:56:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:45,649 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-10-27 14:56:45,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:56:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-10-27 14:56:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:56:45,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:45,651 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:45,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:56:45,652 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:45,652 INFO L82 PathProgramCache]: Analyzing trace with hash -513029839, now seen corresponding path program 16 times [2020-10-27 14:56:45,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:45,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050728759] [2020-10-27 14:56:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:47,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 14:56:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:48,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:48,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:56:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:56:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:56:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:56:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:56:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:48,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:56:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:56:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:56:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:56:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 225 proven. 111 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 14:56:48,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050728759] [2020-10-27 14:56:48,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:48,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:56:48,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591325895] [2020-10-27 14:56:48,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:56:48,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:48,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:56:48,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:56:48,341 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 21 states. [2020-10-27 14:56:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:50,046 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2020-10-27 14:56:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:56:50,047 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 140 [2020-10-27 14:56:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:50,048 INFO L225 Difference]: With dead ends: 222 [2020-10-27 14:56:50,048 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 14:56:50,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=301, Invalid=1339, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:56:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 14:56:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2020-10-27 14:56:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:56:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2020-10-27 14:56:50,084 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 140 [2020-10-27 14:56:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:50,085 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2020-10-27 14:56:50,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:56:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2020-10-27 14:56:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 14:56:50,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:50,086 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:50,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:56:50,086 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:50,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2146105086, now seen corresponding path program 17 times [2020-10-27 14:56:50,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:50,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242644262] [2020-10-27 14:56:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 14:56:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 14:56:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-27 14:56:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:56:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-27 14:56:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:56,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:56:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:56:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:56:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:56:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:56:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:56:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 14:56:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 14:56:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 18 proven. 399 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-27 14:56:56,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242644262] [2020-10-27 14:56:56,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:56,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:56:56,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858159538] [2020-10-27 14:56:56,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:56:56,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:56:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:56:56,219 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 24 states. [2020-10-27 14:57:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:00,555 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2020-10-27 14:57:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:57:00,557 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 143 [2020-10-27 14:57:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:00,559 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:57:00,559 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:57:00,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=340, Invalid=2852, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:57:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:57:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2020-10-27 14:57:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 14:57:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2020-10-27 14:57:00,593 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 143 [2020-10-27 14:57:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:00,593 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2020-10-27 14:57:00,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:57:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2020-10-27 14:57:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 14:57:00,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:00,594 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 8, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:00,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:57:00,595 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1697536536, now seen corresponding path program 18 times [2020-10-27 14:57:00,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:00,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987082749] [2020-10-27 14:57:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 14:57:05,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-27 14:57:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:57:05,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:57:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 14:57:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:07,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:07,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:57:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:57:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:57:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:57:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:57:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:57:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 14:57:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 14:57:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 14:57:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 27 proven. 442 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-27 14:57:07,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987082749] [2020-10-27 14:57:07,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:07,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:57:07,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229743210] [2020-10-27 14:57:07,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:57:07,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:07,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:57:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:57:07,213 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand 30 states. [2020-10-27 14:57:09,420 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-27 14:57:09,669 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-27 14:57:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:12,793 INFO L93 Difference]: Finished difference Result 242 states and 277 transitions. [2020-10-27 14:57:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:57:12,795 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 152 [2020-10-27 14:57:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:12,796 INFO L225 Difference]: With dead ends: 242 [2020-10-27 14:57:12,796 INFO L226 Difference]: Without dead ends: 225 [2020-10-27 14:57:12,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=282, Invalid=4008, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 14:57:12,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-27 14:57:12,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 201. [2020-10-27 14:57:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-27 14:57:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-10-27 14:57:12,868 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 152 [2020-10-27 14:57:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:12,869 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-10-27 14:57:12,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:57:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-10-27 14:57:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 14:57:12,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:12,871 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 8, 7, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:12,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:57:12,871 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash -453424708, now seen corresponding path program 19 times [2020-10-27 14:57:12,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:12,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285184797] [2020-10-27 14:57:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:13,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:17,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:17,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-27 14:57:17,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 14:57:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:57:17,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:57:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 14:57:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0