/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/list-simple/sll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:56:28,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:56:28,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:56:28,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:56:28,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:56:28,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:56:28,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:56:28,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:56:28,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:56:28,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:56:28,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:56:28,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:56:28,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:56:28,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:56:28,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:56:28,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:56:28,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:56:28,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:56:28,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:56:28,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:56:28,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:56:28,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:56:28,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:56:28,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:56:28,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:56:28,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:56:28,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:56:28,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:56:28,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:56:28,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:56:28,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:56:28,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:56:28,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:56:28,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:56:28,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:56:28,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:56:28,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:56:28,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:56:28,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:56:28,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:56:28,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:56:28,460 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 15:56:28,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:56:28,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:56:28,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:56:28,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:56:28,510 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:56:28,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:56:28,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:56:28,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:56:28,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:56:28,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:56:28,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:56:28,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:56:28,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:56:28,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:56:28,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:56:28,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:56:28,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:56:28,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:56:28,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:56:28,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:56:28,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:56:28,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:56:28,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:56:28,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:56:28,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:56:28,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:56:28,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:56:28,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:56:28,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:56:28,516 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 15:56:28,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:56:28,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:56:28,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:56:28,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:56:28,885 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:56:28,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-12 15:56:28,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e258756/0122c1fae98343e58b84573062d47efa/FLAGdda652f6d [2020-10-12 15:56:29,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:56:29,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-12 15:56:29,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e258756/0122c1fae98343e58b84573062d47efa/FLAGdda652f6d [2020-10-12 15:56:29,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e258756/0122c1fae98343e58b84573062d47efa [2020-10-12 15:56:29,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:56:29,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:56:29,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:56:29,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:56:29,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:56:29,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:56:29" (1/1) ... [2020-10-12 15:56:29,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d38d190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:29, skipping insertion in model container [2020-10-12 15:56:29,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:56:29" (1/1) ... [2020-10-12 15:56:29,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:56:29,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:56:30,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:56:30,441 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:56:30,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:56:30,560 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:56:30,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30 WrapperNode [2020-10-12 15:56:30,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:56:30,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:56:30,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:56:30,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:56:30,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (1/1) ... [2020-10-12 15:56:30,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:56:30,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:56:30,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:56:30,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:56:30,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (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 15:56:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:56:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:56:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:56:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:56:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:56:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-12 15:56:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-12 15:56:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-12 15:56:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-12 15:56:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:56:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:56:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:56:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:56:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:56:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:56:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:56:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:56:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:56:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:56:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:56:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:56:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:56:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:56:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:56:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:56:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:56:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:56:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:56:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:56:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:56:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:56:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:56:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:56:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:56:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:56:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:56:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:56:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:56:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:56:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:56:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:56:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:56:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:56:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:56:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:56:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:56:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:56:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:56:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:56:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:56:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:56:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:56:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:56:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:56:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:56:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:56:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:56:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:56:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:56:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:56:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:56:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:56:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:56:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:56:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:56:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:56:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:56:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:56:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:56:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:56:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:56:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:56:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:56:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:56:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:56:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:56:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:56:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:56:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:56:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:56:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:56:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:56:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:56:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:56:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:56:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:56:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-12 15:56:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:56:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:56:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:56:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:56:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:56:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:56:31,078 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:56:31,291 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:56:31,291 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 15:56:31,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:56:31 BoogieIcfgContainer [2020-10-12 15:56:31,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:56:31,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:56:31,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:56:31,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:56:31,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:56:29" (1/3) ... [2020-10-12 15:56:31,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513fbd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:56:31, skipping insertion in model container [2020-10-12 15:56:31,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:56:30" (2/3) ... [2020-10-12 15:56:31,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513fbd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:56:31, skipping insertion in model container [2020-10-12 15:56:31,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:56:31" (3/3) ... [2020-10-12 15:56:31,303 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2020-10-12 15:56:31,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:56:31,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:56:31,338 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:56:31,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:56:31,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:56:31,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:56:31,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:56:31,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:56:31,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:56:31,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:56:31,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:56:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-12 15:56:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:56:31,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:31,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:31,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:31,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1925718240, now seen corresponding path program 1 times [2020-10-12 15:56:31,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:31,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774260986] [2020-10-12 15:56:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:56:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:56:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-12 15:56:32,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:56:32,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:56:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:32,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:32,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:56:32,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:32,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:56:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:56:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:56:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 15:56:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:32,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:56:32,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 15:56:32,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:56:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:56:32,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:56:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:32,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:56:32,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:56:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:56:32,940 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 15:56:32,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774260986] [2020-10-12 15:56:32,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:56:32,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 15:56:32,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634092180] [2020-10-12 15:56:32,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:56:32,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:32,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:56:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:56:32,975 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 8 states. [2020-10-12 15:56:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:33,383 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2020-10-12 15:56:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:56:33,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-12 15:56:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:33,399 INFO L225 Difference]: With dead ends: 107 [2020-10-12 15:56:33,400 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 15:56:33,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:56:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 15:56:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-12 15:56:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 15:56:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-12 15:56:33,457 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-10-12 15:56:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:33,457 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-12 15:56:33,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:56:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-12 15:56:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:56:33,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:33,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:33,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:56:33,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:33,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1649510061, now seen corresponding path program 1 times [2020-10-12 15:56:33,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:33,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622169762] [2020-10-12 15:56:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:34,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:34,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:56:34,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:56:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-12 15:56:34,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:56:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:34,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:56:34,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:35,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:56:35,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:35,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:56:35,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 15:56:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 15:56:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:56:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:56:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 15:56:35,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:56:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:56:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:56:35,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622169762] [2020-10-12 15:56:35,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:35,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:56:35,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744419929] [2020-10-12 15:56:35,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:56:35,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:56:35,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:56:35,885 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 16 states. [2020-10-12 15:56:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:37,287 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-10-12 15:56:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:56:37,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-10-12 15:56:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:37,291 INFO L225 Difference]: With dead ends: 67 [2020-10-12 15:56:37,292 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 15:56:37,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:56:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 15:56:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-12 15:56:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 15:56:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-10-12 15:56:37,330 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 32 [2020-10-12 15:56:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:37,331 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-10-12 15:56:37,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:56:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-10-12 15:56:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:56:37,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:37,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:37,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:56:37,336 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:37,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1836110609, now seen corresponding path program 1 times [2020-10-12 15:56:37,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:37,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191592719] [2020-10-12 15:56:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:37,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:56:37,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-12 15:56:37,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:56:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:56:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:37,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:37,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:37,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:56:37,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:37,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:56:37,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:56:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:56:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 15:56:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:37,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:37,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:37,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:56:37,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:56:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:56:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:37,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:56:37,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:56:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:56:37,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191592719] [2020-10-12 15:56:37,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:37,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:56:37,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145611484] [2020-10-12 15:56:37,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:56:37,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:56:37,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:56:37,989 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 10 states. [2020-10-12 15:56:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:38,289 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2020-10-12 15:56:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:56:38,290 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-12 15:56:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:38,291 INFO L225 Difference]: With dead ends: 65 [2020-10-12 15:56:38,292 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:56:38,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:56:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:56:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-12 15:56:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 15:56:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-12 15:56:38,301 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 32 [2020-10-12 15:56:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:38,302 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-12 15:56:38,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:56:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-12 15:56:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:56:38,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:38,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:38,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:56:38,304 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:38,305 INFO L82 PathProgramCache]: Analyzing trace with hash 920788662, now seen corresponding path program 1 times [2020-10-12 15:56:38,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:38,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124999376] [2020-10-12 15:56:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:38,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:38,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:40,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:40,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:56:40,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:56:40,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-12 15:56:40,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 15:56:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 15:56:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:40,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:40,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:40,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:56:40,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:40,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:40,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:40,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:40,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 15:56:40,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:56:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:56:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:56:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:41,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:56:41,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:56:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:56:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:41,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:56:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:41,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-12 15:56:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:56:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:56:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:56:41,938 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 15:56:42,163 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-12 15:56:42,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:42,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:42,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:42,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 15:56:42,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:43,011 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 15:56:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:56:43,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124999376] [2020-10-12 15:56:43,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:43,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 15:56:43,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79760731] [2020-10-12 15:56:43,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 15:56:43,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:43,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 15:56:43,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:56:43,036 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 24 states. [2020-10-12 15:56:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:44,676 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-12 15:56:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:56:44,676 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 41 [2020-10-12 15:56:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:44,678 INFO L225 Difference]: With dead ends: 67 [2020-10-12 15:56:44,678 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 15:56:44,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:56:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 15:56:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2020-10-12 15:56:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:56:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-12 15:56:44,688 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 41 [2020-10-12 15:56:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:44,689 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-12 15:56:44,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 15:56:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-12 15:56:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:56:44,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:44,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:44,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:56:44,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:44,691 INFO L82 PathProgramCache]: Analyzing trace with hash 111442036, now seen corresponding path program 1 times [2020-10-12 15:56:44,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:44,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813711960] [2020-10-12 15:56:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:44,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:49,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:56:49,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:56:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-10-12 15:56:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:56:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:56:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:49,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:49,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 15:56:49,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:56:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:56:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:56:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:49,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:49,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:56:49,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:56:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:56:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 15:56:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:56:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:56:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:49,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:50,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 15:56:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:56:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:56:50,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813711960] [2020-10-12 15:56:50,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:50,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:56:50,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356545782] [2020-10-12 15:56:50,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:56:50,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:50,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:56:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:56:50,147 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 19 states. [2020-10-12 15:56:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:51,304 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2020-10-12 15:56:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:56:51,305 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-10-12 15:56:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:51,307 INFO L225 Difference]: With dead ends: 65 [2020-10-12 15:56:51,307 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 15:56:51,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:56:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 15:56:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-12 15:56:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:56:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-12 15:56:51,316 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 41 [2020-10-12 15:56:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:51,317 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-12 15:56:51,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:56:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-12 15:56:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:56:51,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:51,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:51,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:56:51,319 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1520377100, now seen corresponding path program 1 times [2020-10-12 15:56:51,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:51,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540230072] [2020-10-12 15:56:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:51,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:56:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:56:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 15:56:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:56:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:56:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:56,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:56,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:56,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:56,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:56:56,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:56,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:56,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-12 15:56:56,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:56,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:56:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:56:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:56,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:56,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:56,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:56:56,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:56:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:56:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:56:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 15:56:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:56:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:56:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:57,375 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-12 15:56:57,659 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-12 15:56:57,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:57,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:57,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:57,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:56:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:56:57,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540230072] [2020-10-12 15:56:57,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:56:57,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-12 15:56:57,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237779363] [2020-10-12 15:56:57,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:56:57,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:57,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:56:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:56:57,852 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 21 states. [2020-10-12 15:56:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:59,003 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-12 15:56:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:56:59,003 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2020-10-12 15:56:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:59,005 INFO L225 Difference]: With dead ends: 63 [2020-10-12 15:56:59,005 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 15:56:59,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:56:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 15:56:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-10-12 15:56:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 15:56:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-12 15:56:59,014 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 42 [2020-10-12 15:56:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:59,015 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-12 15:56:59,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:56:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-12 15:56:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:56:59,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:59,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:59,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:56:59,017 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:59,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:59,017 INFO L82 PathProgramCache]: Analyzing trace with hash 156803957, now seen corresponding path program 2 times [2020-10-12 15:56:59,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:59,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454656321] [2020-10-12 15:56:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:00,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:57:00,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:57:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-12 15:57:00,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:57:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:57:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:57:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:00,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:00,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:00,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:57:00,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:57:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:57:00,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:57:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:00,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:57:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:00,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:57:00,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:57:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:57:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:57:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:57:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:57:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:00,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:00,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:57:00,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:57:00,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454656321] [2020-10-12 15:57:00,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:00,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:57:00,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936254824] [2020-10-12 15:57:00,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:57:00,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:00,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:57:00,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:57:00,288 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 13 states. [2020-10-12 15:57:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:00,669 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-10-12 15:57:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:57:00,669 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-12 15:57:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:00,671 INFO L225 Difference]: With dead ends: 77 [2020-10-12 15:57:00,671 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 15:57:00,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:57:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 15:57:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-10-12 15:57:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:57:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-12 15:57:00,682 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 42 [2020-10-12 15:57:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:00,682 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-12 15:57:00,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:57:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-12 15:57:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:57:00,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:00,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:00,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:57:00,684 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:00,685 INFO L82 PathProgramCache]: Analyzing trace with hash -93116136, now seen corresponding path program 3 times [2020-10-12 15:57:00,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:00,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957446978] [2020-10-12 15:57:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 15:57:01,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:57:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-12 15:57:01,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:57:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:57:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:57:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:01,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:01,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 15:57:01,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:57:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:57:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:01,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:57:01,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:01,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:57:01,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:57:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:57:01,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:57:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:57:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:57:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:57:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 15:57:01,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957446978] [2020-10-12 15:57:01,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:01,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:57:01,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097572322] [2020-10-12 15:57:01,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:57:01,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:01,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:57:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:57:01,492 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 13 states. [2020-10-12 15:57:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:01,916 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2020-10-12 15:57:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:57:01,916 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-12 15:57:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:01,918 INFO L225 Difference]: With dead ends: 71 [2020-10-12 15:57:01,919 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 15:57:01,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:57:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 15:57:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-10-12 15:57:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:57:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-12 15:57:01,929 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 51 [2020-10-12 15:57:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:01,930 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-12 15:57:01,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:57:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-12 15:57:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:57:01,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:01,931 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:01,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:57:01,932 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 957077198, now seen corresponding path program 1 times [2020-10-12 15:57:01,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:01,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267023760] [2020-10-12 15:57:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:02,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:57:03,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:57:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-12 15:57:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:57:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:57:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 15:57:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:03,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:03,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:57:03,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:57:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:57:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:03,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:57:03,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:03,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:03,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:57:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 15:57:03,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:57:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:57:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:57:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 15:57:03,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267023760] [2020-10-12 15:57:03,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:03,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:57:03,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487242828] [2020-10-12 15:57:03,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:57:03,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:03,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:57:03,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:57:03,788 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 16 states. [2020-10-12 15:57:04,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:04,259 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-12 15:57:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:57:04,260 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-10-12 15:57:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:04,261 INFO L225 Difference]: With dead ends: 58 [2020-10-12 15:57:04,262 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 15:57:04,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:57:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 15:57:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-12 15:57:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 15:57:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-12 15:57:04,272 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 52 [2020-10-12 15:57:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:04,273 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-12 15:57:04,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:57:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-12 15:57:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 15:57:04,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:04,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:04,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:57:04,275 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:04,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash -395432484, now seen corresponding path program 1 times [2020-10-12 15:57:04,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:04,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822216185] [2020-10-12 15:57:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:05,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:57:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1263 [2020-10-12 15:57:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 15:57:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:57:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 15:57:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:57:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:05,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:05,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:05,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:57:05,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:05,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:05,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:57:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:06,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 15:57:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:57:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:57:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:06,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:06,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:06,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:06,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:06,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:57:06,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:57:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:57:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 15:57:06,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:57:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:57:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:06,600 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-12 15:57:06,948 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2020-10-12 15:57:07,287 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-12 15:57:07,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:07,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:07,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:07,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:57:07,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:57:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:57:07,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822216185] [2020-10-12 15:57:07,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:07,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 15:57:07,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334402212] [2020-10-12 15:57:07,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 15:57:07,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 15:57:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:57:07,592 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 25 states. [2020-10-12 15:57:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:08,926 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-12 15:57:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:57:08,927 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-12 15:57:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:08,928 INFO L225 Difference]: With dead ends: 49 [2020-10-12 15:57:08,928 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 15:57:08,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:57:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 15:57:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-12 15:57:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 15:57:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 15:57:08,940 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 53 [2020-10-12 15:57:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:08,941 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 15:57:08,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 15:57:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 15:57:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 15:57:08,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:08,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:08,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:57:08,943 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:08,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2053449651, now seen corresponding path program 1 times [2020-10-12 15:57:08,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:08,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237816451] [2020-10-12 15:57:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:10,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 15:57:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:57:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1951 [2020-10-12 15:57:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 15:57:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:57:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:57:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:57:11,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:11,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:11,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 15:57:11,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:57:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:57:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:57:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:57:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:57:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:57:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:57:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:11,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 15:57:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:57:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:57:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:12,557 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-12 15:57:12,971 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-12 15:57:13,727 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-12 15:57:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:13,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:13,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:13,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:13,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:57:13,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:57:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:57:14,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237816451] [2020-10-12 15:57:14,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:14,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 15:57:14,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999386208] [2020-10-12 15:57:14,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 15:57:14,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 15:57:14,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:57:14,070 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 29 states. [2020-10-12 15:57:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:15,997 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-12 15:57:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:57:16,004 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2020-10-12 15:57:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:16,005 INFO L225 Difference]: With dead ends: 55 [2020-10-12 15:57:16,005 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 15:57:16,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 15:57:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 15:57:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-12 15:57:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:57:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-12 15:57:16,026 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 55 [2020-10-12 15:57:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:16,027 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-12 15:57:16,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 15:57:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-12 15:57:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 15:57:16,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:16,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:16,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:57:16,028 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:16,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2053447977, now seen corresponding path program 1 times [2020-10-12 15:57:16,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:16,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983643245] [2020-10-12 15:57:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:21,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:21,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 15:57:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:57:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:57:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 15:57:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:57:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:57:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:21,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:21,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:21,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:57:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:21,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:21,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:21,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:57:21,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:57:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:57:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:21,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:21,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:22,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:57:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:22,473 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-12 15:57:22,924 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-12 15:57:23,225 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-12 15:57:23,539 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-12 15:57:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:23,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:57:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:57:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:24,381 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-12 15:57:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:57:24,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983643245] [2020-10-12 15:57:24,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:24,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 15:57:24,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495446195] [2020-10-12 15:57:24,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 15:57:24,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:24,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 15:57:24,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:57:24,419 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 31 states. [2020-10-12 15:57:25,277 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-12 15:57:26,972 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2020-10-12 15:57:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:27,787 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-12 15:57:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:57:27,787 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 55 [2020-10-12 15:57:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:27,789 INFO L225 Difference]: With dead ends: 53 [2020-10-12 15:57:27,789 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 15:57:27,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=185, Invalid=2265, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 15:57:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 15:57:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-12 15:57:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 15:57:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 15:57:27,804 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 55 [2020-10-12 15:57:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:27,805 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 15:57:27,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 15:57:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 15:57:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:57:27,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:27,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:27,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:57:27,806 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:27,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1973471608, now seen corresponding path program 1 times [2020-10-12 15:57:27,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:27,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066321233] [2020-10-12 15:57:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:28,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:57:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:28,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:28,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:28,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:57:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:29,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:29,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:29,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:29,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 15:57:29,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:57:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:57:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:29,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:29,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:57:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:57:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:29,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 15:57:29,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066321233] [2020-10-12 15:57:29,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:29,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:57:29,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744536874] [2020-10-12 15:57:29,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:57:29,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:29,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:57:29,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:57:29,213 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 17 states. [2020-10-12 15:57:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:29,925 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-12 15:57:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:57:29,926 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-12 15:57:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:29,927 INFO L225 Difference]: With dead ends: 63 [2020-10-12 15:57:29,928 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 15:57:29,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:57:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 15:57:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-10-12 15:57:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:57:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-12 15:57:29,938 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 57 [2020-10-12 15:57:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:29,939 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-12 15:57:29,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:57:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-12 15:57:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:57:29,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:29,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:29,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:57:29,940 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1973469934, now seen corresponding path program 1 times [2020-10-12 15:57:29,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:29,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508688207] [2020-10-12 15:57:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:31,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:31,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:57:31,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-12 15:57:31,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 15:57:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:57:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:57:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:31,539 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-10-12 15:57:31,685 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-10-12 15:57:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:31,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:31,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:31,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:31,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:32,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:32,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:57:32,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 15:57:32,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:57:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:57:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:57:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:32,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:32,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:57:32,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:57:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:57:32,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:57:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:32,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:32,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:32,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 15:57:32,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:57:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:57:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:33,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 15:57:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:57:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:57:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:36,012 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2020-10-12 15:57:44,750 WARN L193 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 301 DAG size of output: 151 [2020-10-12 15:57:59,436 WARN L193 SmtUtils]: Spent 13.76 s on a formula simplification. DAG size of input: 417 DAG size of output: 226 [2020-10-12 15:58:00,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:58:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:00,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:00,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:00,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:58:00,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:58:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:58:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:58:00,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508688207] [2020-10-12 15:58:00,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:58:00,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 15:58:00,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248861935] [2020-10-12 15:58:00,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 15:58:00,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:00,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 15:58:00,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:58:00,962 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 32 states. [2020-10-12 15:58:04,558 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification that was a NOOP. DAG size: 220 [2020-10-12 15:58:08,996 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification that was a NOOP. DAG size: 227 [2020-10-12 15:58:13,552 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 15:58:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,167 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-12 15:58:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:58:14,169 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 57 [2020-10-12 15:58:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,170 INFO L225 Difference]: With dead ends: 77 [2020-10-12 15:58:14,170 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 15:58:14,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=181, Invalid=1981, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 15:58:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 15:58:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-12 15:58:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 15:58:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-12 15:58:14,186 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 57 [2020-10-12 15:58:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,186 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-12 15:58:14,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 15:58:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-12 15:58:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:58:14,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,187 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:14,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:58:14,188 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1781161231, now seen corresponding path program 2 times [2020-10-12 15:58:14,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694746543] [2020-10-12 15:58:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 15:58:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:19,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:58:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:20,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:58:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:58:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:58:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:58:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:21,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:58:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:21,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:21,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:58:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:58:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:21,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:58:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:22,379 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-12 15:58:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:58:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:22,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:58:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:23,524 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-12 15:58:24,404 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-12 15:58:25,337 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2020-10-12 15:58:27,099 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2020-10-12 15:58:29,249 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 143 DAG size of output: 133 [2020-10-12 15:58:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:58:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:30,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:58:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,216 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-10-12 15:58:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:58:31,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694746543] [2020-10-12 15:58:31,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:58:31,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 15:58:31,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305960379] [2020-10-12 15:58:31,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 15:58:31,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 15:58:31,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1257, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:58:31,266 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 37 states. [2020-10-12 15:58:32,781 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-12 15:58:34,505 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-12 15:58:35,415 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-12 15:58:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:38,873 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-12 15:58:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 15:58:38,875 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 66 [2020-10-12 15:58:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:38,876 INFO L225 Difference]: With dead ends: 59 [2020-10-12 15:58:38,876 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 15:58:38,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=244, Invalid=3296, Unknown=0, NotChecked=0, Total=3540 [2020-10-12 15:58:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 15:58:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-12 15:58:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:58:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-12 15:58:38,890 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 66 [2020-10-12 15:58:38,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:38,891 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-12 15:58:38,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 15:58:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-12 15:58:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:58:38,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:38,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:38,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:58:38,892 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:38,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1995962688, now seen corresponding path program 2 times [2020-10-12 15:58:38,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:38,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849977020] [2020-10-12 15:58:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:39,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 15:58:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-12 15:58:39,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:58:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 15:58:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:58:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:58:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:58:40,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 15:58:40,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:58:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:58:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:58:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:40,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:58:40,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:58:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:58:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:58:40,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:58:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:58:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:40,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:58:40,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:40,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:58:40,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:58:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:58:40,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:58:40,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:58:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:58:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:58:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:58:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:58:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 15:58:40,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849977020] [2020-10-12 15:58:40,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:58:40,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:58:40,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089058720] [2020-10-12 15:58:40,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:58:40,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:58:40,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:58:40,746 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 19 states. [2020-10-12 15:58:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:41,573 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-12 15:58:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:58:41,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 68 [2020-10-12 15:58:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:41,576 INFO L225 Difference]: With dead ends: 62 [2020-10-12 15:58:41,578 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 15:58:41,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:58:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 15:58:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-12 15:58:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 15:58:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-12 15:58:41,599 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 68 [2020-10-12 15:58:41,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:41,599 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-12 15:58:41,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:58:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-12 15:58:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:58:41,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:41,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:41,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:58:41,601 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:41,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1995961014, now seen corresponding path program 3 times [2020-10-12 15:58:41,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:41,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676272818] [2020-10-12 15:58:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:43,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:46,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:46,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 15:58:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:47,115 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 56 [2020-10-12 15:58:47,279 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-12 15:58:47,580 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-12 15:58:47,885 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-12 15:58:48,049 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-12 15:58:48,234 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-12 15:58:48,432 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-12 15:58:48,607 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-12 15:58:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:58:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:49,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:49,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:58:49,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-12 15:58:49,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:58:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:58:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:58:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:50,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:58:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 15:58:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:50,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:50,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:50,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:58:50,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:58:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:58:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:58:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:58:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:58:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:58:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:58:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:58:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:57,542 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-12 15:58:57,925 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-12 15:59:00,840 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 159 DAG size of output: 111 [2020-10-12 16:00:09,760 WARN L193 SmtUtils]: Spent 1.12 m on a formula simplification. DAG size of input: 739 DAG size of output: 323 [2020-10-12 16:00:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:00:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:12,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 16:00:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 16:00:12,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:00:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:00:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:00:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:00:12,699 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-12 16:00:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 16:00:12,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676272818] [2020-10-12 16:00:12,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:00:12,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 16:00:12,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138711168] [2020-10-12 16:00:12,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 16:00:12,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 16:00:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1310, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 16:00:12,769 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 38 states. [2020-10-12 16:00:14,253 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 16:00:15,381 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 16:00:15,699 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 16:00:15,970 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-12 16:00:16,678 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-12 16:00:17,168 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-12 16:00:17,620 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-12 16:00:18,187 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 16:00:18,677 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 16:00:19,121 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 16:00:19,578 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 16:00:20,482 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 145 [2020-10-12 16:00:20,906 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 16:00:21,371 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 16:00:21,796 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 16:00:22,187 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 16:00:22,562 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-12 16:00:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:22,980 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-10-12 16:00:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 16:00:22,982 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 68 [2020-10-12 16:00:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:22,983 INFO L225 Difference]: With dead ends: 85 [2020-10-12 16:00:22,983 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 16:00:22,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 86.1s TimeCoverageRelationStatistics Valid=276, Invalid=3506, Unknown=0, NotChecked=0, Total=3782 [2020-10-12 16:00:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 16:00:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-10-12 16:00:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-12 16:00:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-12 16:00:22,998 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 68 [2020-10-12 16:00:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:22,999 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-12 16:00:22,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 16:00:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-12 16:00:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 16:00:23,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:23,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:23,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 16:00:23,000 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1980498643, now seen corresponding path program 4 times [2020-10-12 16:00:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:23,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015609325] [2020-10-12 16:00:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking...