/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:38:18,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:38:18,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:38:18,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:38:18,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:38:18,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:38:18,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:38:18,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:38:18,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:38:18,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:38:18,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:38:18,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:38:18,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:38:18,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:38:18,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:38:18,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:38:18,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:38:18,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:38:18,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:38:18,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:38:18,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:38:18,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:38:18,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:38:18,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:38:18,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:38:18,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:38:18,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:38:18,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:38:18,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:38:18,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:38:18,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:38:18,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:38:18,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:38:18,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:38:18,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:38:18,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:38:18,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:38:18,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:38:18,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:38:18,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:38:18,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:38:18,471 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 [2020-10-12 15:38:18,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:38:18,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:38:18,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:38:18,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:38:18,494 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:38:18,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:38:18,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:38:18,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:38:18,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:38:18,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:38:18,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:38:18,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:38:18,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:38:18,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:38:18,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:38:18,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:38:18,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:38:18,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:38:18,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:38:18,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:38:18,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:38:18,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:18,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:38:18,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:38:18,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:38:18,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:38:18,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:38:18,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:38:18,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:38:18,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:38:18,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:38:18,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:38:18,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:38:18,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:38:18,845 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:38:18,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2020-10-12 15:38:18,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be607cf79/3408de50dbef43f3803b850f09a7894b/FLAG76a339531 [2020-10-12 15:38:19,409 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:38:19,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/packet_filter.i [2020-10-12 15:38:19,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be607cf79/3408de50dbef43f3803b850f09a7894b/FLAG76a339531 [2020-10-12 15:38:19,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be607cf79/3408de50dbef43f3803b850f09a7894b [2020-10-12 15:38:19,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:38:19,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:38:19,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:19,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:38:19,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:38:19,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:19" (1/1) ... [2020-10-12 15:38:19,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb8cc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:19, skipping insertion in model container [2020-10-12 15:38:19,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:19" (1/1) ... [2020-10-12 15:38:19,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:38:19,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:38:20,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:20,304 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:38:20,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:20,487 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:38:20,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20 WrapperNode [2020-10-12 15:38:20,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:20,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:38:20,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:38:20,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:38:20,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (1/1) ... [2020-10-12 15:38:20,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:38:20,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:38:20,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:38:20,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:38:20,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (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 [2020-10-12 15:38:20,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:38:20,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:38:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:38:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:38:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2020-10-12 15:38:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2020-10-12 15:38:20,708 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-12 15:38:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2020-10-12 15:38:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2020-10-12 15:38:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:38:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 15:38:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:38:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2020-10-12 15:38:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:38:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:38:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:38:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:38:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:38:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:38:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:38:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:38:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:38:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:38:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:38:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:38:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:38:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:38:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:38:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:38:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:38:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:38:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:38:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:38:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:38:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:38:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:38:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:38:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:38:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:38:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:38:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:38:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:38:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:38:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:38:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:38:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:38:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:38:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:38:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:38:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:38:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:38:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:38:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:38:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:38:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:38:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:38:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:38:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:38:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:38:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:38:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:38:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:38:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:38:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:38:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:38:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:38:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:38:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:38:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:38:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:38:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:38:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:38:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:38:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:38:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:38:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:38:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:38:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:38:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:38:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:38:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:38:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:38:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:38:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:38:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:38:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:38:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:38:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2020-10-12 15:38:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:38:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:38:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:38:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:38:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:38:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:38:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure send [2020-10-12 15:38:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-12 15:38:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:38:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2020-10-12 15:38:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2020-10-12 15:38:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:38:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:38:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-12 15:38:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:38:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:38:21,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:38:21,427 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 15:38:21,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:21 BoogieIcfgContainer [2020-10-12 15:38:21,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:38:21,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:38:21,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:38:21,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:38:21,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:38:19" (1/3) ... [2020-10-12 15:38:21,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e5e6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:21, skipping insertion in model container [2020-10-12 15:38:21,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:20" (2/3) ... [2020-10-12 15:38:21,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e5e6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:21, skipping insertion in model container [2020-10-12 15:38:21,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:21" (3/3) ... [2020-10-12 15:38:21,441 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2020-10-12 15:38:21,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:38:21,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 15:38:21,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 15:38:21,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:38:21,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:38:21,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:38:21,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:38:21,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:38:21,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:38:21,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:38:21,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:38:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-12 15:38:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:38:21,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:21,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:21,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2020-10-12 15:38:21,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:21,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918777599] [2020-10-12 15:38:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:38:22,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:38:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-12 15:38:22,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:38:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:22,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:22,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:22,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918777599] [2020-10-12 15:38:22,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:22,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:38:22,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787192383] [2020-10-12 15:38:22,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:38:22,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:22,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:38:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:38:22,443 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 7 states. [2020-10-12 15:38:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:22,968 INFO L93 Difference]: Finished difference Result 110 states and 142 transitions. [2020-10-12 15:38:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:38:22,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-12 15:38:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:22,988 INFO L225 Difference]: With dead ends: 110 [2020-10-12 15:38:22,988 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 15:38:22,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 15:38:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-12 15:38:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:38:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-10-12 15:38:23,095 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 14 [2020-10-12 15:38:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:23,096 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-10-12 15:38:23,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:38:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-10-12 15:38:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:38:23,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:23,101 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] [2020-10-12 15:38:23,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:38:23,102 INFO L427 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:23,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:23,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2020-10-12 15:38:23,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:23,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392570489] [2020-10-12 15:38:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:23,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:38:23,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 15:38:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:38:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:23,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:23,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:23,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:23,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:38:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 15:38:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:38:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:23,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392570489] [2020-10-12 15:38:23,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:23,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 15:38:23,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525897912] [2020-10-12 15:38:23,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:23,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:23,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:23,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:23,495 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 9 states. [2020-10-12 15:38:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:24,148 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2020-10-12 15:38:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:38:24,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-12 15:38:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:24,151 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:38:24,151 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 15:38:24,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 15:38:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-10-12 15:38:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 15:38:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-12 15:38:24,165 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 21 [2020-10-12 15:38:24,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:24,165 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-12 15:38:24,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-12 15:38:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:38:24,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:24,167 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:24,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:38:24,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:24,168 INFO L82 PathProgramCache]: Analyzing trace with hash 453890644, now seen corresponding path program 1 times [2020-10-12 15:38:24,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:24,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314641240] [2020-10-12 15:38:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:24,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:38:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-12 15:38:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:38:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:24,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:24,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:38:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:24,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:38:24,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:38:24,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:38:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,295 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-12 15:38:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:25,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314641240] [2020-10-12 15:38:25,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:25,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:25,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081006234] [2020-10-12 15:38:25,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:25,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:25,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:25,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:25,306 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 11 states. [2020-10-12 15:38:25,605 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-12 15:38:25,937 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-12 15:38:27,017 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-12 15:38:27,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:27,591 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-12 15:38:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:27,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-12 15:38:27,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:27,595 INFO L225 Difference]: With dead ends: 141 [2020-10-12 15:38:27,595 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 15:38:27,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:38:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 15:38:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2020-10-12 15:38:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 15:38:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-10-12 15:38:27,612 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 26 [2020-10-12 15:38:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:27,612 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-10-12 15:38:27,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-10-12 15:38:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:27,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:27,614 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:27,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:38:27,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:27,615 INFO L82 PathProgramCache]: Analyzing trace with hash -845629304, now seen corresponding path program 1 times [2020-10-12 15:38:27,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:27,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074741606] [2020-10-12 15:38:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:38:28,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-12 15:38:28,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:38:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:38:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:38:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:38:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:38:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:38:28,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:38:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:38:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:38:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:38:28,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:38:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:28,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074741606] [2020-10-12 15:38:28,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:28,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:28,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553065990] [2020-10-12 15:38:28,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:28,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:28,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:28,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:28,464 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 12 states. [2020-10-12 15:38:29,485 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-12 15:38:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:30,276 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2020-10-12 15:38:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:38:30,277 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-12 15:38:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:30,279 INFO L225 Difference]: With dead ends: 129 [2020-10-12 15:38:30,279 INFO L226 Difference]: Without dead ends: 107 [2020-10-12 15:38:30,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:38:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-12 15:38:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 65. [2020-10-12 15:38:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:38:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-10-12 15:38:30,304 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 32 [2020-10-12 15:38:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:30,305 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-10-12 15:38:30,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-10-12 15:38:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:30,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:30,310 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:30,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:38:30,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:30,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1958549347, now seen corresponding path program 1 times [2020-10-12 15:38:30,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:30,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222050134] [2020-10-12 15:38:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:30,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:38:33,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2954 [2020-10-12 15:38:33,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:38:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:38:33,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:33,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:33,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:38:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:33,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:38:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 15:38:33,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:38:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:33,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:38:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:38:33,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:33,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222050134] [2020-10-12 15:38:33,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:33,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:38:33,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359275920] [2020-10-12 15:38:33,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:38:33,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:38:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:38:33,659 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 16 states. [2020-10-12 15:38:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:34,952 INFO L93 Difference]: Finished difference Result 140 states and 177 transitions. [2020-10-12 15:38:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:38:34,953 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-10-12 15:38:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:34,955 INFO L225 Difference]: With dead ends: 140 [2020-10-12 15:38:34,955 INFO L226 Difference]: Without dead ends: 114 [2020-10-12 15:38:34,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:38:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-12 15:38:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2020-10-12 15:38:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:38:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2020-10-12 15:38:34,973 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 32 [2020-10-12 15:38:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:34,974 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2020-10-12 15:38:34,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:38:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2020-10-12 15:38:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:34,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:34,976 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:34,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:38:34,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:34,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1958551269, now seen corresponding path program 1 times [2020-10-12 15:38:34,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:34,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234610733] [2020-10-12 15:38:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:36,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:38:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1804 [2020-10-12 15:38:36,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:38:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:38:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:37,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:37,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:37,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:37,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:38:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:37,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:38:37,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:38:37,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:37,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:38:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:38:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:37,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:37,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:38:37,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:37,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:37,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234610733] [2020-10-12 15:38:37,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:37,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:38:37,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706396455] [2020-10-12 15:38:37,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:38:37,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:37,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:38:37,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:37,213 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand 13 states. [2020-10-12 15:38:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:38,321 INFO L93 Difference]: Finished difference Result 145 states and 185 transitions. [2020-10-12 15:38:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:38,322 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-12 15:38:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:38,324 INFO L225 Difference]: With dead ends: 145 [2020-10-12 15:38:38,324 INFO L226 Difference]: Without dead ends: 118 [2020-10-12 15:38:38,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:38:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-12 15:38:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 98. [2020-10-12 15:38:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:38:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2020-10-12 15:38:38,359 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 32 [2020-10-12 15:38:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:38,359 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2020-10-12 15:38:38,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:38:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2020-10-12 15:38:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:38:38,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:38,368 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:38,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:38:38,368 INFO L427 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:38,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1188712300, now seen corresponding path program 1 times [2020-10-12 15:38:38,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:38,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432594302] [2020-10-12 15:38:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:38:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-12 15:38:39,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:38:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:38:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:39,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:39,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:39,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:39,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:39,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:38:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:38:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:38:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:38:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 15:38:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 15:38:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:39,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432594302] [2020-10-12 15:38:39,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:39,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:38:39,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145480647] [2020-10-12 15:38:39,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:38:39,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:39,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:38:39,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:39,395 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand 13 states. [2020-10-12 15:38:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:40,483 INFO L93 Difference]: Finished difference Result 131 states and 165 transitions. [2020-10-12 15:38:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:40,484 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-12 15:38:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:40,486 INFO L225 Difference]: With dead ends: 131 [2020-10-12 15:38:40,486 INFO L226 Difference]: Without dead ends: 129 [2020-10-12 15:38:40,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:38:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-12 15:38:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 108. [2020-10-12 15:38:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 15:38:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2020-10-12 15:38:40,515 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 33 [2020-10-12 15:38:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:40,515 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2020-10-12 15:38:40,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:38:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2020-10-12 15:38:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:38:40,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:40,520 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:40,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:38:40,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash -472993492, now seen corresponding path program 1 times [2020-10-12 15:38:40,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:40,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265154612] [2020-10-12 15:38:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:38:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-12 15:38:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:38:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:38:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:38:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:38:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:38:41,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:38:41,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:38:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,675 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-12 15:38:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 15:38:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:38:41,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:41,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:57,012 WARN L193 SmtUtils]: Spent 14.21 s on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 15:38:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:57,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265154612] [2020-10-12 15:38:57,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:57,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:38:57,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680783185] [2020-10-12 15:38:57,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:38:57,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:38:57,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:57,035 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand 13 states. [2020-10-12 15:39:12,988 WARN L193 SmtUtils]: Spent 15.57 s on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 15:39:14,646 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-12 15:39:29,194 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 15:39:51,496 WARN L193 SmtUtils]: Spent 14.56 s on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 15:40:16,918 WARN L193 SmtUtils]: Spent 24.01 s on a formula simplification that was a NOOP. DAG size: 165 [2020-10-12 15:40:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:38,972 INFO L93 Difference]: Finished difference Result 211 states and 271 transitions. [2020-10-12 15:40:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:40:38,977 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-12 15:40:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:38,979 INFO L225 Difference]: With dead ends: 211 [2020-10-12 15:40:38,979 INFO L226 Difference]: Without dead ends: 184 [2020-10-12 15:40:38,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 71.5s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:40:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-12 15:40:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 113. [2020-10-12 15:40:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-12 15:40:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 144 transitions. [2020-10-12 15:40:39,010 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 144 transitions. Word has length 33 [2020-10-12 15:40:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:39,010 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 144 transitions. [2020-10-12 15:40:39,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:40:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 144 transitions. [2020-10-12 15:40:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:40:39,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:39,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:39,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:40:39,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:39,013 INFO L82 PathProgramCache]: Analyzing trace with hash 567613021, now seen corresponding path program 1 times [2020-10-12 15:40:39,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:39,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917075132] [2020-10-12 15:40:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:40:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-12 15:40:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:40:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 15:40:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:40:40,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:40,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:40,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:40,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:40,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:40:40,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:40:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:40:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:40:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:40:40,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:40:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:40:41,225 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-12 15:40:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:40:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:41,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:40:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:40:41,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:40:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:41,919 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-12 15:40:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:40:41,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917075132] [2020-10-12 15:40:41,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:41,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:40:41,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322937240] [2020-10-12 15:40:41,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:40:41,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:41,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:40:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:40:41,934 INFO L87 Difference]: Start difference. First operand 113 states and 144 transitions. Second operand 16 states. [2020-10-12 15:40:42,876 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 15:40:43,405 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-12 15:40:44,347 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-12 15:40:47,380 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-12 15:40:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:49,834 INFO L93 Difference]: Finished difference Result 198 states and 257 transitions. [2020-10-12 15:40:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:40:49,838 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-12 15:40:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:49,841 INFO L225 Difference]: With dead ends: 198 [2020-10-12 15:40:49,841 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 15:40:49,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:40:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 15:40:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 121. [2020-10-12 15:40:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 15:40:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2020-10-12 15:40:49,881 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 37 [2020-10-12 15:40:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:49,882 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2020-10-12 15:40:49,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:40:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2020-10-12 15:40:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:40:49,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:49,884 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:49,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:40:49,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 259896919, now seen corresponding path program 1 times [2020-10-12 15:40:49,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:49,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709734314] [2020-10-12 15:40:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:54,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:40:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:40:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:40:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:40:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:40:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:55,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:55,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:55,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:55,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:55,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:40:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:55,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:55,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:40:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:40:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:40:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:56,051 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-12 15:40:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:40:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:56,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:56,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:56,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 15:40:56,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:29,924 WARN L193 SmtUtils]: Spent 32.36 s on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 15:41:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 15:41:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:29,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:29,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:41:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:41:29,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:41:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:41:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:41:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:30,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709734314] [2020-10-12 15:41:30,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:30,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:41:30,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840817217] [2020-10-12 15:41:30,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:41:30,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:30,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:41:30,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:41:30,032 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand 13 states. [2020-10-12 15:41:30,715 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2020-10-12 15:41:31,937 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-12 15:42:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:14,572 INFO L93 Difference]: Finished difference Result 195 states and 260 transitions. [2020-10-12 15:42:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:42:14,581 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-12 15:42:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:14,585 INFO L225 Difference]: With dead ends: 195 [2020-10-12 15:42:14,585 INFO L226 Difference]: Without dead ends: 177 [2020-10-12 15:42:14,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:42:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-12 15:42:14,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 140. [2020-10-12 15:42:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-12 15:42:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2020-10-12 15:42:14,617 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 38 [2020-10-12 15:42:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:14,617 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2020-10-12 15:42:14,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:42:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2020-10-12 15:42:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:42:14,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:14,621 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:14,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:42:14,621 INFO L427 AbstractCegarLoop]: === Iteration 11 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash 661927774, now seen corresponding path program 1 times [2020-10-12 15:42:14,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:14,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632680460] [2020-10-12 15:42:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:15,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:42:15,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-12 15:42:15,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:42:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:42:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:42:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:15,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:15,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:15,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:42:15,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:15,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:42:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:16,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:16,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:16,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:42:16,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:16,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:42:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 15:42:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:16,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:16,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:42:16,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:42:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 15:42:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:16,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:42:16,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:42:16,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:42:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:16,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632680460] [2020-10-12 15:42:16,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:42:16,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:42:16,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734803304] [2020-10-12 15:42:16,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:42:16,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:16,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:42:16,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:42:16,363 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand 14 states. [2020-10-12 15:42:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:20,784 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2020-10-12 15:42:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:42:20,790 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-12 15:42:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:20,792 INFO L225 Difference]: With dead ends: 178 [2020-10-12 15:42:20,792 INFO L226 Difference]: Without dead ends: 176 [2020-10-12 15:42:20,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:42:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-12 15:42:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 156. [2020-10-12 15:42:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-12 15:42:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 205 transitions. [2020-10-12 15:42:20,813 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 205 transitions. Word has length 39 [2020-10-12 15:42:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:20,814 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 205 transitions. [2020-10-12 15:42:20,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:42:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 205 transitions. [2020-10-12 15:42:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:42:20,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:20,815 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:20,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:42:20,815 INFO L427 AbstractCegarLoop]: === Iteration 12 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash 661929696, now seen corresponding path program 1 times [2020-10-12 15:42:20,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:20,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213225137] [2020-10-12 15:42:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:42:22,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-12 15:42:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:42:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:42:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:22,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:42:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:42:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:22,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:42:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:42:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 15:42:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:42:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:42:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 15:42:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:23,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:42:23,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:42:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:42:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:42:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:23,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213225137] [2020-10-12 15:42:23,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:42:23,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:42:23,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832106862] [2020-10-12 15:42:23,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:42:23,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:42:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:42:23,362 INFO L87 Difference]: Start difference. First operand 156 states and 205 transitions. Second operand 17 states. [2020-10-12 15:42:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:28,267 INFO L93 Difference]: Finished difference Result 212 states and 281 transitions. [2020-10-12 15:42:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:42:28,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-10-12 15:42:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:28,275 INFO L225 Difference]: With dead ends: 212 [2020-10-12 15:42:28,275 INFO L226 Difference]: Without dead ends: 200 [2020-10-12 15:42:28,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:42:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-12 15:42:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 177. [2020-10-12 15:42:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-12 15:42:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2020-10-12 15:42:28,300 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 39 [2020-10-12 15:42:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:28,300 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2020-10-12 15:42:28,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:42:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2020-10-12 15:42:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:42:28,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:28,302 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:28,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:42:28,302 INFO L427 AbstractCegarLoop]: === Iteration 13 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2048133090, now seen corresponding path program 1 times [2020-10-12 15:42:28,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:28,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11728185] [2020-10-12 15:42:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:28,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:42:28,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:28,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 15:42:28,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:42:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:42:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:42:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:28,903 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-10-12 15:42:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:28,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:28,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:42:28,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:42:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:42:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:42:29,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:42:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:42:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:29,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 15:42:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:29,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:29,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:29,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:42:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:42:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 15:42:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:29,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:42:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:42:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 15:42:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:29,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11728185] [2020-10-12 15:42:29,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:42:29,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 15:42:29,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660074625] [2020-10-12 15:42:29,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:42:29,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:29,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:42:29,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:42:29,193 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand 9 states. [2020-10-12 15:42:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:31,050 INFO L93 Difference]: Finished difference Result 304 states and 395 transitions. [2020-10-12 15:42:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:42:31,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-12 15:42:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:31,058 INFO L225 Difference]: With dead ends: 304 [2020-10-12 15:42:31,058 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 15:42:31,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:42:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 15:42:31,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2020-10-12 15:42:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-12 15:42:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2020-10-12 15:42:31,079 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 39 [2020-10-12 15:42:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:31,080 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2020-10-12 15:42:31,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:42:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2020-10-12 15:42:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:42:31,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:31,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:31,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:42:31,081 INFO L427 AbstractCegarLoop]: === Iteration 14 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1462823114, now seen corresponding path program 1 times [2020-10-12 15:42:31,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:31,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71782459] [2020-10-12 15:42:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:31,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:33,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:42:33,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-12 15:42:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:42:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:42:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0