/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/dll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:35:46,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:35:46,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:35:46,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:35:46,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:35:46,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:35:46,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:35:46,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:35:46,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:35:46,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:35:46,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:35:46,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:35:46,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:35:46,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:35:46,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:35:46,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:35:46,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:35:46,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:35:46,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:35:46,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:35:46,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:35:46,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:35:46,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:35:46,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:35:46,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:35:46,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:35:46,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:35:46,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:35:46,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:35:46,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:35:46,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:35:46,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:35:46,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:35:46,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:35:46,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:35:46,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:35:46,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:35:46,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:35:46,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:35:46,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:35:46,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:35:46,785 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 [2020-10-14 23:35:46,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:35:46,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:35:46,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:35:46,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:35:46,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:35:46,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:35:46,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:35:46,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:35:46,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:35:46,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:35:46,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:35:46,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:35:46,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:35:46,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:35:46,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:35:46,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:35:46,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:35:46,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:35:46,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:35:46,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:35:46,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:35:46,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:35:46,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:35:46,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:35:46,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:35:46,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:35:46,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:35:46,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:35:46,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:35:46,814 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:35:47,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:35:47,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:35:47,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:35:47,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:35:47,126 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:35:47,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2020-10-14 23:35:47,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af5407dea/4bfb3e703f8c4ad2a2859976949b5615/FLAGbc45a4e23 [2020-10-14 23:35:47,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:35:47,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2020-10-14 23:35:47,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af5407dea/4bfb3e703f8c4ad2a2859976949b5615/FLAGbc45a4e23 [2020-10-14 23:35:48,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af5407dea/4bfb3e703f8c4ad2a2859976949b5615 [2020-10-14 23:35:48,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:35:48,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:35:48,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:35:48,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:35:48,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:35:48,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f40c1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48, skipping insertion in model container [2020-10-14 23:35:48,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:35:48,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:35:48,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:35:48,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:35:48,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:35:48,666 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:35:48,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48 WrapperNode [2020-10-14 23:35:48,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:35:48,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:35:48,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:35:48,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:35:48,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (1/1) ... [2020-10-14 23:35:48,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:35:48,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:35:48,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:35:48,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:35:48,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (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 [2020-10-14 23:35:48,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 23:35:48,803 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 23:35:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2020-10-14 23:35:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:35:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:35:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:35:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:35:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:35:48,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:35:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:35:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:35:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:35:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:35:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:35:48,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:35:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:35:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:35:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:35:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:35:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:35:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:35:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:35:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:35:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:35:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:35:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:35:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:35:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:35:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:35:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:35:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:35:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:35:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:35:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:35:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:35:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:35:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:35:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:35:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:35:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:35:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:35:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:35:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:35:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:35:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:35:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:35:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:35:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:35:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:35:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:35:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:35:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:35:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:35:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:35:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:35:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:35:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:35:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:35:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:35:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:35:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:35:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:35:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:35:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:35:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:35:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:35:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:35:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:35:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 23:35:48,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:35:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:35:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2020-10-14 23:35:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:35:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:35:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:35:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:35:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:35:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:35:49,305 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:35:49,473 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:35:49,473 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:35:49,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:49 BoogieIcfgContainer [2020-10-14 23:35:49,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:35:49,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:35:49,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:35:49,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:35:49,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:48" (1/3) ... [2020-10-14 23:35:49,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788fd783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:49, skipping insertion in model container [2020-10-14 23:35:49,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:48" (2/3) ... [2020-10-14 23:35:49,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788fd783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:49, skipping insertion in model container [2020-10-14 23:35:49,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:49" (3/3) ... [2020-10-14 23:35:49,486 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i [2020-10-14 23:35:49,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:35:49,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:35:49,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:35:49,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:35:49,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:35:49,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:35:49,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:35:49,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:35:49,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:35:49,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:35:49,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:35:49,570 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-14 23:35:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:35:49,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:49,580 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] [2020-10-14 23:35:49,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:49,587 INFO L82 PathProgramCache]: Analyzing trace with hash 656525943, now seen corresponding path program 1 times [2020-10-14 23:35:49,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:49,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270878317] [2020-10-14 23:35:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:35:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:35:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-14 23:35:51,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:51,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:35:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:35:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:35:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:35:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:51,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:51,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:51,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:35:51,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:51,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:35:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:35:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:35:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 23:35:51,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:51,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:35:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:35:52,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:35:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:35:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:35:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 23:35:52,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:35:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:35:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:52,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 23:35:52,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:52,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:35:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:35:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:52,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270878317] [2020-10-14 23:35:52,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:52,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:35:52,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123506762] [2020-10-14 23:35:52,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:35:52,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:52,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:35:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:35:52,879 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 18 states. [2020-10-14 23:35:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:54,549 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2020-10-14 23:35:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:35:54,552 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-10-14 23:35:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:54,564 INFO L225 Difference]: With dead ends: 115 [2020-10-14 23:35:54,564 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:35:54,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:35:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:35:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-14 23:35:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:35:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-14 23:35:54,667 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 36 [2020-10-14 23:35:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:54,667 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-14 23:35:54,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:35:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-14 23:35:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:35:54,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:54,672 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] [2020-10-14 23:35:54,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:35:54,674 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:54,674 INFO L82 PathProgramCache]: Analyzing trace with hash -316028564, now seen corresponding path program 1 times [2020-10-14 23:35:54,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:54,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272908640] [2020-10-14 23:35:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:54,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:56,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:35:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-10-14 23:35:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:56,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:35:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:35:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:35:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:56,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:56,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:56,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:35:56,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:56,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:56,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:35:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:35:57,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 23:35:57,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:35:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:35:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:57,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:35:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:35:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:35:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:35:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:57,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 23:35:57,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:35:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:35:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:58,357 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-14 23:35:58,735 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-10-14 23:35:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:58,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:58,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:35:58,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:58,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:35:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:59,273 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-14 23:35:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:59,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272908640] [2020-10-14 23:35:59,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:59,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:35:59,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506922062] [2020-10-14 23:35:59,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:35:59,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:59,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:35:59,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:35:59,294 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 22 states. [2020-10-14 23:36:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:01,226 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-14 23:36:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:36:01,226 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-10-14 23:36:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:01,229 INFO L225 Difference]: With dead ends: 66 [2020-10-14 23:36:01,229 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:36:01,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:36:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:36:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-14 23:36:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:36:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-14 23:36:01,243 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 36 [2020-10-14 23:36:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:01,243 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-14 23:36:01,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:36:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-14 23:36:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:36:01,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:01,245 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] [2020-10-14 23:36:01,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:36:01,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1231108546, now seen corresponding path program 1 times [2020-10-14 23:36:01,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:01,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471905286] [2020-10-14 23:36:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:36:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:36:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 23:36:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:36:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:36:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:06,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:06,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:06,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 23:36:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:36:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:07,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:07,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:07,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-14 23:36:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:07,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:08,958 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 63 [2020-10-14 23:36:10,098 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 52 [2020-10-14 23:36:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:36:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:10,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:10,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:11,142 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-14 23:36:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:11,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471905286] [2020-10-14 23:36:11,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:11,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:36:11,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005125776] [2020-10-14 23:36:11,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:36:11,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:11,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:36:11,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:36:11,166 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 22 states. [2020-10-14 23:36:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:12,862 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-14 23:36:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:36:12,863 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-14 23:36:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:12,864 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:36:12,864 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:36:12,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:36:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:36:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-10-14 23:36:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:36:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-14 23:36:12,876 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 40 [2020-10-14 23:36:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:12,876 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-14 23:36:12,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:36:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-14 23:36:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:36:12,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:12,878 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] [2020-10-14 23:36:12,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:36:12,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1231064836, now seen corresponding path program 1 times [2020-10-14 23:36:12,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:12,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705193962] [2020-10-14 23:36:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:17,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:17,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:36:17,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 23:36:17,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:17,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:36:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:36:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:18,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:18,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:18,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:18,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:18,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:18,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 23:36:18,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:18,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:18,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:18,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:18,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:36:18,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:18,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:18,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:18,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:18,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:18,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:18,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-14 23:36:18,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:18,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:19,154 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 23:36:19,358 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-14 23:36:19,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:19,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:19,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705193962] [2020-10-14 23:36:19,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:19,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:36:19,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733881057] [2020-10-14 23:36:19,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:36:19,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:36:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:36:19,695 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 22 states. [2020-10-14 23:36:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:21,152 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-14 23:36:21,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:36:21,154 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-14 23:36:21,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:21,156 INFO L225 Difference]: With dead ends: 64 [2020-10-14 23:36:21,156 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:36:21,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:36:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:36:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-10-14 23:36:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:36:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-14 23:36:21,167 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 40 [2020-10-14 23:36:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:21,168 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-14 23:36:21,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:36:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-14 23:36:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:36:21,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:21,170 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] [2020-10-14 23:36:21,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:36:21,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash -491693899, now seen corresponding path program 1 times [2020-10-14 23:36:21,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:21,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334625107] [2020-10-14 23:36:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:36:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 23:36:21,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:36:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:21,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:21,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:36:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:36:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:21,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:36:21,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:21,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:36:21,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:36:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:21,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:36:21,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:21,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:36:21,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334625107] [2020-10-14 23:36:21,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:36:21,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:36:21,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160941050] [2020-10-14 23:36:21,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:36:21,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:21,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:36:21,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:36:21,522 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 7 states. [2020-10-14 23:36:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:21,736 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-14 23:36:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:36:21,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-14 23:36:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:21,739 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:36:21,739 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:36:21,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:36:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:36:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-14 23:36:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:36:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-14 23:36:21,748 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 41 [2020-10-14 23:36:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:21,748 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-14 23:36:21,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:36:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-14 23:36:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:36:21,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:21,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:21,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:36:21,751 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash 364861950, now seen corresponding path program 1 times [2020-10-14 23:36:21,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:21,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777096054] [2020-10-14 23:36:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:22,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:36:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-10-14 23:36:22,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:22,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:36:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:36:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:22,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:22,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 23:36:22,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:22,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:36:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:36:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:23,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:23,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:23,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:23,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:36:23,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:23,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:23,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:23,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:23,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:36:23,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:23,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:36:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:36:23,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:23,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:36:23,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777096054] [2020-10-14 23:36:23,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:23,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:36:23,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153409479] [2020-10-14 23:36:23,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:36:23,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:23,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:36:23,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:36:23,424 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 19 states. [2020-10-14 23:36:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:24,891 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-10-14 23:36:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:36:24,892 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2020-10-14 23:36:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:24,893 INFO L225 Difference]: With dead ends: 79 [2020-10-14 23:36:24,893 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:36:24,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:36:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:36:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-14 23:36:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:36:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-14 23:36:24,903 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 46 [2020-10-14 23:36:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:24,903 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-14 23:36:24,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:36:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-14 23:36:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:36:24,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:24,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:24,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:36:24,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2139869312, now seen corresponding path program 1 times [2020-10-14 23:36:24,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:24,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46080865] [2020-10-14 23:36:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:36:27,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2433 [2020-10-14 23:36:27,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:36:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:36:27,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:27,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:27,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 23:36:27,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:36:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:36:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:28,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:28,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:28,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:36:28,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:28,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:28,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:28,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:28,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:28,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:28,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:36:28,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:28,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:29,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 23:36:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:29,578 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2020-10-14 23:36:30,222 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2020-10-14 23:36:30,593 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-14 23:36:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:30,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:30,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:30,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:30,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:36:30,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:30,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:30,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:31,007 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-14 23:36:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:36:31,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46080865] [2020-10-14 23:36:31,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:31,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:36:31,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468729405] [2020-10-14 23:36:31,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:36:31,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:36:31,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:36:31,026 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 28 states. [2020-10-14 23:36:31,957 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 23:36:32,216 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 23:36:32,561 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-14 23:36:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:33,869 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-14 23:36:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:36:33,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-10-14 23:36:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:33,871 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:36:33,871 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:36:33,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:36:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:36:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-10-14 23:36:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:36:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-14 23:36:33,882 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 46 [2020-10-14 23:36:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:33,882 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-14 23:36:33,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:36:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-14 23:36:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:36:33,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:33,884 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-14 23:36:33,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:36:33,885 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1048680150, now seen corresponding path program 1 times [2020-10-14 23:36:33,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:33,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056128778] [2020-10-14 23:36:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:33,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:38,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:38,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:36:38,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 23:36:38,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:38,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:36:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:36:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:39,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:39,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:39,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:39,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:39,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:39,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:39,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 23:36:39,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:39,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:36:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:36:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:40,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:40,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:40,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:40,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:36:40,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:40,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:36:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:40,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:40,646 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-14 23:36:40,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:41,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:41,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:41,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:41,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 23:36:41,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:41,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:41,896 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2020-10-14 23:36:43,085 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 111 DAG size of output: 92 [2020-10-14 23:36:43,753 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 101 [2020-10-14 23:36:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:36:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:43,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:44,720 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 51 [2020-10-14 23:36:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:36:44,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056128778] [2020-10-14 23:36:44,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:44,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:36:44,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708253094] [2020-10-14 23:36:44,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:36:44,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:44,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:36:44,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:36:44,746 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 29 states. [2020-10-14 23:36:45,253 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-14 23:36:45,906 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-14 23:36:46,310 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 23:36:46,751 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 23:36:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:49,818 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-14 23:36:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:36:49,819 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2020-10-14 23:36:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:49,820 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:36:49,821 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:36:49,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=156, Invalid=1824, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:36:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:36:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-10-14 23:36:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:36:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-14 23:36:49,833 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 50 [2020-10-14 23:36:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:49,834 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-14 23:36:49,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:36:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-14 23:36:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:36:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:49,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:49,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:36:49,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1048636440, now seen corresponding path program 1 times [2020-10-14 23:36:49,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:49,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833060507] [2020-10-14 23:36:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:36:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 23:36:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:54,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:36:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:36:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:55,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:55,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:55,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:55,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:55,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:55,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:55,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:55,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:36:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:55,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:55,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:55,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:36:55,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:55,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:55,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:55,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:55,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:55,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:55,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:55,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:55,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:56,398 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-14 23:36:56,865 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2020-10-14 23:36:59,267 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 168 DAG size of output: 112 [2020-10-14 23:36:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:59,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:36:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:59,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:00,230 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-14 23:37:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:00,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833060507] [2020-10-14 23:37:00,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:00,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:37:00,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109835512] [2020-10-14 23:37:00,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:37:00,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:00,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:37:00,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:37:00,278 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 27 states. [2020-10-14 23:37:00,733 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-14 23:37:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:02,082 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-14 23:37:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:37:02,083 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2020-10-14 23:37:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:02,084 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:37:02,084 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:37:02,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:37:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:37:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-14 23:37:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:37:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-14 23:37:02,097 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 50 [2020-10-14 23:37:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:02,098 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-14 23:37:02,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:37:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-14 23:37:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:37:02,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:02,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:02,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:37:02,100 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1852006879, now seen corresponding path program 1 times [2020-10-14 23:37:02,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:02,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379419582] [2020-10-14 23:37:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:07,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:37:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:37:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 23:37:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:07,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:37:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:37:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:07,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:07,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:07,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:07,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:07,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:07,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:07,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:07,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:07,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:07,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:07,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:07,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 23:37:07,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:07,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:37:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:08,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:08,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:37:08,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:08,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:37:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:08,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:08,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:08,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:37:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:08,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:08,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:08,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:37:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:08,959 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-14 23:37:09,185 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-14 23:37:09,523 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-14 23:37:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:09,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:09,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:09,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:37:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:09,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:09,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379419582] [2020-10-14 23:37:09,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:09,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:37:09,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922720383] [2020-10-14 23:37:09,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:37:09,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:37:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:37:09,804 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 28 states. [2020-10-14 23:37:10,320 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-14 23:37:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:11,956 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2020-10-14 23:37:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:37:11,957 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2020-10-14 23:37:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:11,958 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:37:11,958 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 23:37:11,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:37:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 23:37:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2020-10-14 23:37:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:37:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-14 23:37:11,969 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 51 [2020-10-14 23:37:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:11,970 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-14 23:37:11,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:37:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-14 23:37:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:37:11,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:11,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-14 23:37:11,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:37:11,973 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:11,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:11,973 INFO L82 PathProgramCache]: Analyzing trace with hash -500232556, now seen corresponding path program 2 times [2020-10-14 23:37:11,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:11,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904331183] [2020-10-14 23:37:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:15,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3552 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:37:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:15,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:15,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:15,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:15,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:15,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:16,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:16,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:37:16,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-14 23:37:16,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:16,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:37:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:37:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:17,034 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-10-14 23:37:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:17,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:17,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:17,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:37:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:17,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:17,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:17,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:37:17,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:17,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:37:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:37:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:17,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:37:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:37:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 23:37:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:17,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:37:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:37:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:18,079 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-14 23:37:18,474 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-14 23:37:18,685 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-14 23:37:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:18,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:18,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:19,589 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 42 [2020-10-14 23:37:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:37:19,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904331183] [2020-10-14 23:37:19,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:19,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:37:19,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129112010] [2020-10-14 23:37:19,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:37:19,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:19,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:37:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:37:19,614 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 33 states. [2020-10-14 23:37:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:22,331 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-14 23:37:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:37:22,332 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 56 [2020-10-14 23:37:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:22,333 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:37:22,333 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:37:22,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=214, Invalid=2336, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:37:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:37:22,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-14 23:37:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:37:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-14 23:37:22,343 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 56 [2020-10-14 23:37:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:22,343 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-14 23:37:22,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:37:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-14 23:37:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:37:22,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:22,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:22,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:37:22,345 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:22,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:22,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1709195820, now seen corresponding path program 2 times [2020-10-14 23:37:22,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:22,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352573282] [2020-10-14 23:37:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:27,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:27,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:37:27,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:37:27,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 23:37:27,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:27,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:37:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:37:27,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:37:27,887 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-10-14 23:37:28,039 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2020-10-14 23:37:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 23:37:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:37:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:37:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:29,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:37:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:29,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:29,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:29,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:29,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:37:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:29,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:29,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:37:29,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-14 23:37:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:37:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:37:29,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:30,434 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-14 23:37:30,811 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-14 23:37:31,254 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 87 [2020-10-14 23:37:31,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:31,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352573282] [2020-10-14 23:37:31,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:31,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:37:31,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79727225] [2020-10-14 23:37:31,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:37:31,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:31,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:37:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:37:31,558 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 32 states. [2020-10-14 23:37:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:34,281 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-10-14 23:37:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:37:34,282 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-14 23:37:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:34,284 INFO L225 Difference]: With dead ends: 82 [2020-10-14 23:37:34,284 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:37:34,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=169, Invalid=1993, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:37:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:37:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2020-10-14 23:37:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:37:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-14 23:37:34,295 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2020-10-14 23:37:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:34,296 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-14 23:37:34,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:37:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-14 23:37:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:37:34,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:34,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:34,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:37:34,298 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:34,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1444109707, now seen corresponding path program 1 times [2020-10-14 23:37:34,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:34,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838499841] [2020-10-14 23:37:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:34,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:37:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:35,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:35,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:35,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:37:35,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:35,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:37:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:35,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:37:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:35,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:35,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:35,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:35,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:37:35,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:37:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:35,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:35,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:37:35,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:35,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:35,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 23:37:35,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838499841] [2020-10-14 23:37:35,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:35,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:37:35,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959521147] [2020-10-14 23:37:35,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:37:35,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:35,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:37:35,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:37:35,202 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 9 states. [2020-10-14 23:37:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:35,551 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-14 23:37:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:37:35,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 23:37:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:35,554 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:37:35,554 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 23:37:35,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:37:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 23:37:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-10-14 23:37:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 23:37:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-10-14 23:37:35,562 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 55 [2020-10-14 23:37:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:35,563 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-10-14 23:37:35,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:37:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-10-14 23:37:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:37:35,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:35,564 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:35,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:37:35,564 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:35,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:35,564 INFO L82 PathProgramCache]: Analyzing trace with hash 40872682, now seen corresponding path program 3 times [2020-10-14 23:37:35,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:35,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483530268] [2020-10-14 23:37:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:41,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:41,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:37:41,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:37:41,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5860 [2020-10-14 23:37:41,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:41,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:41,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:37:41,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:41,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:37:41,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:41,660 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-14 23:37:41,819 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 42 [2020-10-14 23:37:42,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:42,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:42,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:42,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:42,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:42,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:42,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:37:42,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:37:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:43,899 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-14 23:37:44,447 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-14 23:37:44,743 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-14 23:37:45,159 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-14 23:37:45,354 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-14 23:37:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:37:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:45,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:45,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:45,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:37:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:45,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:37:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:37:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:37:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:45,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:37:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:45,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:37:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:46,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:37:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:46,861 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-10-14 23:37:47,407 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-10-14 23:37:48,800 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 130 [2020-10-14 23:37:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:49,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:49,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:49,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:37:49,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:49,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:49,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:50,339 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-14 23:37:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:37:50,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483530268] [2020-10-14 23:37:50,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:50,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:37:50,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866808919] [2020-10-14 23:37:50,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:37:50,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:50,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:37:50,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1249, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:37:50,372 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 37 states. [2020-10-14 23:37:51,233 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-14 23:37:53,654 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-14 23:37:54,284 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-14 23:37:55,605 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-14 23:37:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:56,079 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2020-10-14 23:37:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:37:56,080 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 60 [2020-10-14 23:37:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:56,081 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:37:56,081 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:37:56,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:37:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:37:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-10-14 23:37:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 23:37:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-10-14 23:37:56,094 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 60 [2020-10-14 23:37:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:56,095 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-10-14 23:37:56,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:37:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-10-14 23:37:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:37:56,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:56,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-14 23:37:56,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:37:56,096 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:56,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1265699981, now seen corresponding path program 2 times [2020-10-14 23:37:56,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:56,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384078824] [2020-10-14 23:37:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:01,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:01,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:38:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:01,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:01,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:01,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:01,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:01,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:01,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:02,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:38:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-14 23:38:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:02,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:38:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:38:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:38:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:03,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:03,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:03,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:38:03,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:03,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:38:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:03,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:03,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:38:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:03,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:38:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:38:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:38:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:04,551 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-14 23:38:04,916 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-14 23:38:05,158 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-14 23:38:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:05,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:05,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:38:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:05,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:38:05,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384078824] [2020-10-14 23:38:05,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:05,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:38:05,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174372488] [2020-10-14 23:38:05,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:38:05,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:05,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:38:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=983, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:38:05,499 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 33 states. [2020-10-14 23:38:06,060 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-14 23:38:07,139 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-14 23:38:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:08,025 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2020-10-14 23:38:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:38:08,026 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-10-14 23:38:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:08,028 INFO L225 Difference]: With dead ends: 95 [2020-10-14 23:38:08,028 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 23:38:08,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:38:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 23:38:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-14 23:38:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 23:38:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2020-10-14 23:38:08,043 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 61 [2020-10-14 23:38:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:08,044 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2020-10-14 23:38:08,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:38:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2020-10-14 23:38:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:38:08,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:08,045 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:08,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:38:08,045 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:08,045 INFO L82 PathProgramCache]: Analyzing trace with hash 481120898, now seen corresponding path program 4 times [2020-10-14 23:38:08,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:08,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596418699] [2020-10-14 23:38:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:13,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:38:13,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 23:38:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:13,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:38:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:38:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:38:14,099 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 45 [2020-10-14 23:38:14,699 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 45 [2020-10-14 23:38:15,502 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 54 [2020-10-14 23:38:16,406 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 59 [2020-10-14 23:38:16,990 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 45 [2020-10-14 23:38:17,890 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 52 [2020-10-14 23:38:18,159 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 31 [2020-10-14 23:38:18,393 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 21 [2020-10-14 23:38:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:18,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:18,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:18,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:38:18,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 23:38:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:18,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:38:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:38:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:19,414 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-14 23:38:19,632 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-14 23:38:19,873 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-10-14 23:38:20,065 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-14 23:38:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:20,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:20,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:20,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:20,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:20,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:20,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:20,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:20,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:20,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:38:20,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:20,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:20,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:38:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:20,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:38:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 23:38:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:20,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:38:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:38:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:34,850 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 38