/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/sll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:41:59,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:41:59,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:41:59,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:41:59,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:41:59,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:41:59,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:41:59,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:41:59,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:41:59,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:41:59,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:41:59,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:41:59,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:41:59,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:41:59,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:41:59,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:41:59,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:41:59,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:41:59,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:41:59,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:41:59,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:41:59,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:41:59,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:41:59,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:41:59,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:41:59,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:41:59,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:41:59,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:41:59,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:41:59,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:41:59,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:41:59,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:41:59,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:41:59,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:41:59,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:41:59,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:41:59,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:41:59,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:41:59,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:41:59,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:41:59,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:41:59,766 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 23:41:59,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:41:59,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:41:59,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:41:59,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:41:59,808 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:41:59,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:41:59,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:41:59,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:41:59,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:41:59,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:41:59,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:41:59,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:41:59,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:41:59,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:41:59,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:41:59,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:41:59,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:41:59,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:41:59,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:41:59,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:41:59,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:41:59,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:41:59,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:41:59,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:41:59,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:41:59,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:41:59,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:41:59,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:41:59,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:41:59,813 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 23:42:00,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:42:00,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:42:00,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:42:00,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:42:00,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:42:00,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2020-10-14 23:42:00,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e26c7004/551023253c9945539debd352c0081ff6/FLAG1099afc3b [2020-10-14 23:42:00,694 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:42:00,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2020-10-14 23:42:00,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e26c7004/551023253c9945539debd352c0081ff6/FLAG1099afc3b [2020-10-14 23:42:01,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e26c7004/551023253c9945539debd352c0081ff6 [2020-10-14 23:42:01,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:42:01,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:42:01,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:42:01,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:42:01,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:42:01,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683fb1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01, skipping insertion in model container [2020-10-14 23:42:01,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:42:01,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:42:01,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:42:01,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:42:01,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:42:01,713 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:42:01,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01 WrapperNode [2020-10-14 23:42:01,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:42:01,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:42:01,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:42:01,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:42:01,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (1/1) ... [2020-10-14 23:42:01,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:42:01,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:42:01,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:42:01,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:42:01,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (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 23:42:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:42:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 23:42:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-14 23:42:01,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:42:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:42:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:42:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:42:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:42:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:42:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:42:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:42:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:42:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:42:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:42:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:42:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:42:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:42:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:42:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:42:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:42:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:42:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:42:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:42:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:42:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:42:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:42:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:42:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:42:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:42:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:42:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:42:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:42:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:42:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:42:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:42:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:42:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:42:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:42:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:42:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:42:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:42:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:42:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:42:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:42:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:42:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:42:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:42:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:42:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:42:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:42:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:42:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:42:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:42:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:42:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:42:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:42:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:42:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:42:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:42:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:42:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:42:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:42:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:42:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:42:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:42:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:42:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:42:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:42:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:42:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:42:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:42:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-14 23:42:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:42:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:42:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:42:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:42:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:42:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:42:02,191 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:42:02,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:42:02,437 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 23:42:02,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:42:02 BoogieIcfgContainer [2020-10-14 23:42:02,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:42:02,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:42:02,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:42:02,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:42:02,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:42:01" (1/3) ... [2020-10-14 23:42:02,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e15be97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:42:02, skipping insertion in model container [2020-10-14 23:42:02,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:01" (2/3) ... [2020-10-14 23:42:02,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e15be97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:42:02, skipping insertion in model container [2020-10-14 23:42:02,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:42:02" (3/3) ... [2020-10-14 23:42:02,450 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_equal.i [2020-10-14 23:42:02,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:42:02,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:42:02,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:42:02,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:42:02,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:42:02,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:42:02,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:42:02,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:42:02,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:42:02,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:42:02,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:42:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-14 23:42:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:42:02,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:02,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:02,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1950085846, now seen corresponding path program 1 times [2020-10-14 23:42:02,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:02,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220915754] [2020-10-14 23:42:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:42:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-14 23:42:03,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:42:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:42:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:42:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:03,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:03,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:42:03,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:03,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:42:03,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:03,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:42:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:42:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:42:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:42:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:03,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:42:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:03,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:03,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220915754] [2020-10-14 23:42:03,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:03,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:42:03,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078571170] [2020-10-14 23:42:03,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:42:03,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:42:03,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:42:03,492 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-14 23:42:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:03,741 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2020-10-14 23:42:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:42:03,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-14 23:42:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:03,755 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:42:03,756 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:42:03,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:42:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:42:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-10-14 23:42:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 23:42:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-14 23:42:03,818 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 31 [2020-10-14 23:42:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:03,819 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-14 23:42:03,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:42:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-14 23:42:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:42:03,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:03,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:03,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:42:03,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:03,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1587558776, now seen corresponding path program 1 times [2020-10-14 23:42:03,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:03,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896013513] [2020-10-14 23:42:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:04,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:04,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:42:04,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-14 23:42:04,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:04,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:42:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:42:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:05,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:05,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:05,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:05,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:05,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:05,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:05,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:05,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:42:05,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:05,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:05,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:05,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:42:05,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 23:42:05,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:05,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:42:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:05,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:05,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:42:05,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:05,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:06,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896013513] [2020-10-14 23:42:06,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:06,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 23:42:06,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612533065] [2020-10-14 23:42:06,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:42:06,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:06,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:42:06,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:42:06,019 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 15 states. [2020-10-14 23:42:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:07,015 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-14 23:42:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:42:07,016 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-10-14 23:42:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:07,018 INFO L225 Difference]: With dead ends: 59 [2020-10-14 23:42:07,018 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:42:07,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:42:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:42:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2020-10-14 23:42:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:42:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-14 23:42:07,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-10-14 23:42:07,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:07,032 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-14 23:42:07,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:42:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-14 23:42:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:42:07,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:07,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:07,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:42:07,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:07,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1587560450, now seen corresponding path program 1 times [2020-10-14 23:42:07,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:07,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271430267] [2020-10-14 23:42:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:07,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:07,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:42:07,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-14 23:42:07,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:07,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:42:07,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:07,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:07,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:07,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:07,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:07,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:07,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:07,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:07,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:07,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:07,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:42:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:07,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:07,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:42:07,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 23:42:07,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:07,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:42:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:07,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:07,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:07,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:42:07,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:07,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:07,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271430267] [2020-10-14 23:42:07,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:07,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:42:07,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753396959] [2020-10-14 23:42:07,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:42:07,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:07,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:42:07,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:42:07,949 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-10-14 23:42:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:08,160 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-14 23:42:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:42:08,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-14 23:42:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:08,162 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:42:08,162 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:42:08,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:42:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:42:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-10-14 23:42:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:42:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-14 23:42:08,172 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 31 [2020-10-14 23:42:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:08,172 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-14 23:42:08,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:42:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-14 23:42:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:42:08,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:08,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:08,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:42:08,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash -993853956, now seen corresponding path program 1 times [2020-10-14 23:42:08,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:08,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240448125] [2020-10-14 23:42:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:09,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:09,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:42:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:42:09,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-14 23:42:09,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:09,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:42:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:42:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:09,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:09,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:09,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:09,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:09,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:42:09,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:09,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:09,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:09,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 23:42:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:10,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:42:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:10,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:10,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:10,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 23:42:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:10,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:10,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240448125] [2020-10-14 23:42:10,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:10,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:42:10,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050244595] [2020-10-14 23:42:10,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:42:10,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:42:10,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:42:10,510 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 16 states. [2020-10-14 23:42:11,565 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-14 23:42:11,745 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-14 23:42:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:11,954 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-10-14 23:42:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:42:11,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-10-14 23:42:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:11,956 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:42:11,957 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 23:42:11,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:42:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 23:42:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-10-14 23:42:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:42:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-14 23:42:11,969 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 32 [2020-10-14 23:42:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:11,970 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-14 23:42:11,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:42:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-14 23:42:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:42:11,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:11,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:11,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:42:11,972 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:11,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1803202256, now seen corresponding path program 1 times [2020-10-14 23:42:11,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:11,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266172080] [2020-10-14 23:42:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:13,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:13,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:42:13,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:13,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-14 23:42:13,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:13,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:42:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:13,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:42:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:13,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:13,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:13,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:13,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:42:13,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:13,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:13,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:13,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 23:42:13,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:13,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:42:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 23:42:13,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:13,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:13,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:13,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266172080] [2020-10-14 23:42:13,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:13,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 23:42:13,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557374133] [2020-10-14 23:42:13,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:42:13,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:42:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:42:13,646 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 14 states. [2020-10-14 23:42:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:14,301 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-14 23:42:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:42:14,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-14 23:42:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:14,305 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:42:14,305 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:42:14,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:42:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:42:14,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-14 23:42:14,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:42:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 23:42:14,338 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 32 [2020-10-14 23:42:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:14,340 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 23:42:14,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:42:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 23:42:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:42:14,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:14,345 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:14,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:42:14,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 911184650, now seen corresponding path program 2 times [2020-10-14 23:42:14,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:14,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668461694] [2020-10-14 23:42:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:42:16,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:42:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1659 [2020-10-14 23:42:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:42:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:42:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:16,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:16,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:16,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:16,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:42:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:42:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 23:42:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:42:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:42:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:17,189 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-14 23:42:18,059 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 96 [2020-10-14 23:42:18,843 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-10-14 23:42:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:18,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:18,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:18,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:18,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:42:18,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:18,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:18,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:42:19,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668461694] [2020-10-14 23:42:19,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:19,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 23:42:19,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341052031] [2020-10-14 23:42:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:42:19,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:42:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:42:19,148 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 19 states. [2020-10-14 23:42:19,616 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 23:42:20,269 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 23:42:20,713 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-14 23:42:21,218 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 23:42:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:23,932 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-14 23:42:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:42:23,933 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 33 [2020-10-14 23:42:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:23,934 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:42:23,935 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:42:23,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:42:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:42:23,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2020-10-14 23:42:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 23:42:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-14 23:42:23,946 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 33 [2020-10-14 23:42:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:23,947 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-14 23:42:23,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:42:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-14 23:42:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:42:23,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:23,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:23,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:42:23,949 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:23,949 INFO L82 PathProgramCache]: Analyzing trace with hash 911182976, now seen corresponding path program 1 times [2020-10-14 23:42:23,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:23,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865323946] [2020-10-14 23:42:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:42:24,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:24,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-14 23:42:24,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:42:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:24,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:42:24,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:42:24,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 23:42:24,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:42:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:24,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865323946] [2020-10-14 23:42:24,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:24,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:42:24,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128794428] [2020-10-14 23:42:24,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:42:24,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:24,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:42:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:42:24,592 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 8 states. [2020-10-14 23:42:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:24,867 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-14 23:42:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:42:24,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-14 23:42:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:24,870 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:42:24,870 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:42:24,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:42:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:42:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 23:42:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:42:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-14 23:42:24,892 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 33 [2020-10-14 23:42:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:24,893 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-14 23:42:24,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:42:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-14 23:42:24,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:42:24,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:24,895 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:24,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:42:24,896 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:24,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2003892651, now seen corresponding path program 1 times [2020-10-14 23:42:24,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:24,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803362511] [2020-10-14 23:42:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:25,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:42:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-14 23:42:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:25,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:42:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:42:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:25,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:25,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:25,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:25,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:25,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:25,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:25,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:42:25,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:25,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:42:25,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:25,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:25,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:25,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:42:25,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:25,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:42:25,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803362511] [2020-10-14 23:42:25,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:25,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:42:25,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405403882] [2020-10-14 23:42:25,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:42:25,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:25,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:42:25,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:42:25,449 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 9 states. [2020-10-14 23:42:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:25,661 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 23:42:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:42:25,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 23:42:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:25,663 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:42:25,663 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:42:25,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:42:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:42:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-14 23:42:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:42:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-14 23:42:25,671 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 34 [2020-10-14 23:42:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:25,671 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-14 23:42:25,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:42:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-14 23:42:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:42:25,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:25,672 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, 1, 1, 1, 1, 1] [2020-10-14 23:42:25,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:42:25,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1489805475, now seen corresponding path program 1 times [2020-10-14 23:42:25,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:25,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776689723] [2020-10-14 23:42:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:42:27,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-14 23:42:27,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:27,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:42:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:42:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:27,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:27,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:27,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:27,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:27,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:27,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 23:42:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:42:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:27,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:27,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:42:27,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:27,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:27,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:27,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:27,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:27,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 23:42:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:27,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:42:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:28,243 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-14 23:42:28,447 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-14 23:42:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:28,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:28,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:28,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:42:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:28,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:29,371 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-14 23:42:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:29,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776689723] [2020-10-14 23:42:29,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:29,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:42:29,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774910057] [2020-10-14 23:42:29,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:42:29,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:29,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:42:29,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:42:29,401 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 24 states. [2020-10-14 23:42:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:30,952 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-14 23:42:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:42:30,955 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 41 [2020-10-14 23:42:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:30,956 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:42:30,956 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:42:30,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:42:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:42:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2020-10-14 23:42:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:42:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-14 23:42:30,969 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 41 [2020-10-14 23:42:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:30,969 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-14 23:42:30,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:42:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-14 23:42:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:42:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:30,970 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 23:42:30,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:42:30,971 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:30,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1489803801, now seen corresponding path program 1 times [2020-10-14 23:42:30,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:30,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271377927] [2020-10-14 23:42:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:35,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:35,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:42:35,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:42:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 23:42:35,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:35,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:42:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:42:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:36,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:36,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:36,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:36,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:36,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 23:42:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:36,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:36,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:42:36,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:36,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:36,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:36,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-14 23:42:36,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:36,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:42:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:37,505 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-14 23:42:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:37,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:37,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:37,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:42:37,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:37,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:37,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:37,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271377927] [2020-10-14 23:42:37,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:37,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:42:37,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954999504] [2020-10-14 23:42:37,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:42:37,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:37,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:42:37,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:42:37,787 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 22 states. [2020-10-14 23:42:38,614 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2020-10-14 23:42:38,803 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 23:42:39,129 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-14 23:42:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:39,328 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-10-14 23:42:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:42:39,328 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2020-10-14 23:42:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:39,329 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:42:39,329 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:42:39,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:42:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:42:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2020-10-14 23:42:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:42:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-14 23:42:39,338 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 41 [2020-10-14 23:42:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:39,338 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-14 23:42:39,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:42:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-14 23:42:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:42:39,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:39,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:39,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:42:39,339 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1478998270, now seen corresponding path program 1 times [2020-10-14 23:42:39,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:39,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970968003] [2020-10-14 23:42:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:42,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:42,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:42:42,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3144 [2020-10-14 23:42:42,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:42,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:42:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:42:42,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:42,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:42,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:42,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:42,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:42,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:42:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:42,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:42,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:42,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:42,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:42:42,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:42,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:42,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:42,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:42,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:42,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 23:42:42,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:42,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:42:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:43,419 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-14 23:42:43,762 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-14 23:42:44,196 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2020-10-14 23:42:44,914 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2020-10-14 23:42:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:44,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:44,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:44,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:44,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:44,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:42:44,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:44,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:45,255 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-14 23:42:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:45,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970968003] [2020-10-14 23:42:45,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:45,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:42:45,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662435225] [2020-10-14 23:42:45,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:42:45,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:45,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:42:45,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:42:45,275 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 25 states. [2020-10-14 23:42:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:47,103 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-14 23:42:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:42:47,104 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 43 [2020-10-14 23:42:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:47,105 INFO L225 Difference]: With dead ends: 59 [2020-10-14 23:42:47,105 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:42:47,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:42:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:42:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-10-14 23:42:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:42:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-14 23:42:47,115 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 43 [2020-10-14 23:42:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:47,115 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-14 23:42:47,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:42:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-14 23:42:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:42:47,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:47,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:47,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:42:47,117 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1478996596, now seen corresponding path program 1 times [2020-10-14 23:42:47,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:47,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109336537] [2020-10-14 23:42:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:49,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:49,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:42:49,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2597 [2020-10-14 23:42:49,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:49,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:42:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:42:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:49,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:49,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:49,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:49,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:49,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 23:42:49,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:49,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:50,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:50,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:42:50,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:50,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:50,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:50,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:50,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:42:50,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:50,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:42:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:50,875 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-14 23:42:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:51,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:51,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:51,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:42:51,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:51,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:51,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109336537] [2020-10-14 23:42:51,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:51,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:42:51,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481471763] [2020-10-14 23:42:51,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:42:51,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:51,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:42:51,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:42:51,386 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 24 states. [2020-10-14 23:42:52,341 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-14 23:42:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:52,742 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-10-14 23:42:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:42:52,742 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 43 [2020-10-14 23:42:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:52,743 INFO L225 Difference]: With dead ends: 57 [2020-10-14 23:42:52,744 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:42:52,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:42:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:42:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-14 23:42:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:42:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-14 23:42:52,754 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 43 [2020-10-14 23:42:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:52,754 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-14 23:42:52,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:42:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-14 23:42:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:42:52,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:52,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:52,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:42:52,755 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1085971260, now seen corresponding path program 1 times [2020-10-14 23:42:52,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:52,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261178161] [2020-10-14 23:42:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:53,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:42:55,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:42:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2651 [2020-10-14 23:42:55,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:42:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:55,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:42:55,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:55,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:55,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:55,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:55,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:55,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:55,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:42:55,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:55,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 23:42:55,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:42:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:55,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:55,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:42:55,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:42:55,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261178161] [2020-10-14 23:42:55,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:55,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:42:55,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275869126] [2020-10-14 23:42:55,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:42:55,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:55,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:42:55,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:42:55,914 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 19 states. [2020-10-14 23:42:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:56,730 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-10-14 23:42:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:42:56,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2020-10-14 23:42:56,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:56,732 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:42:56,732 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:42:56,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:42:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:42:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-14 23:42:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:42:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-14 23:42:56,740 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 43 [2020-10-14 23:42:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:56,740 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-14 23:42:56,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:42:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-14 23:42:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:42:56,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:56,741 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:56,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:42:56,742 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -316791143, now seen corresponding path program 2 times [2020-10-14 23:42:56,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:56,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496772357] [2020-10-14 23:42:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:59,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:59,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:42:59,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:42:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2988 [2020-10-14 23:42:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:59,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:42:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:42:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:00,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:43:00,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:00,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:00,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:43:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:00,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:00,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:43:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:43:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:43:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:00,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:43:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:43:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:43:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:00,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:00,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:00,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 23:43:00,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:00,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:43:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:43:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:02,724 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-14 23:43:08,202 WARN L193 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 277 DAG size of output: 193 [2020-10-14 23:43:42,927 WARN L193 SmtUtils]: Spent 33.93 s on a formula simplification. DAG size of input: 550 DAG size of output: 437 [2020-10-14 23:43:43,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:43:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:43,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:43:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:43:44,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496772357] [2020-10-14 23:43:44,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:44,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:43:44,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464822646] [2020-10-14 23:43:44,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:43:44,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:44,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:43:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:43:44,294 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 27 states. [2020-10-14 23:44:01,972 WARN L193 SmtUtils]: Spent 16.98 s on a formula simplification. DAG size of input: 422 DAG size of output: 422 [2020-10-14 23:44:26,173 WARN L193 SmtUtils]: Spent 23.18 s on a formula simplification. DAG size of input: 431 DAG size of output: 431 [2020-10-14 23:44:30,791 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-14 23:44:31,017 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-14 23:44:31,381 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-14 23:44:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:32,391 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-14 23:44:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:44:32,393 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 45 [2020-10-14 23:44:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:32,394 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:44:32,394 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:44:32,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 85.0s TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:44:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:44:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-14 23:44:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:44:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-14 23:44:32,413 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 45 [2020-10-14 23:44:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:32,414 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-14 23:44:32,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:44:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-14 23:44:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:44:32,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:32,417 INFO L422 BasicCegarLoop]: trace histogram [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 23:44:32,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:44:32,418 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:32,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:32,418 INFO L82 PathProgramCache]: Analyzing trace with hash -316792817, now seen corresponding path program 2 times [2020-10-14 23:44:32,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:32,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382962607] [2020-10-14 23:44:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:44:33,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:33,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-10-14 23:44:33,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:44:33,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:44:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:33,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:44:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:44:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:33,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:44:33,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:44:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:44:33,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382962607] [2020-10-14 23:44:33,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:33,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:44:33,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857397469] [2020-10-14 23:44:33,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:44:33,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:33,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:44:33,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:44:33,807 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 12 states. [2020-10-14 23:44:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:34,472 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-14 23:44:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:44:34,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-14 23:44:34,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:34,475 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:44:34,475 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:44:34,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:44:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:44:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-14 23:44:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:44:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-14 23:44:34,485 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 45 [2020-10-14 23:44:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:34,486 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-14 23:44:34,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:44:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-14 23:44:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:44:34,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:34,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:34,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:44:34,487 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:34,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1594209454, now seen corresponding path program 3 times [2020-10-14 23:44:34,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:34,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551593837] [2020-10-14 23:44:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:36,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2241 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:44:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:37,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:37,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:37,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:37,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:37,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:37,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 23:44:37,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:37,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:44:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:44:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:37,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:37,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:37,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:44:37,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:37,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:38,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:38,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:38,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:44:38,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:38,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:44:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:38,566 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-10-14 23:44:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:44:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:38,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:38,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:38,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 23:44:38,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:38,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:44:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:44:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:44:39,615 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-14 23:44:40,102 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-14 23:44:40,658 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-10-14 23:44:41,552 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-10-14 23:44:42,413 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-14 23:44:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:42,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:42,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:43,347 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-14 23:44:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:44:43,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551593837] [2020-10-14 23:44:43,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:43,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:44:43,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540188661] [2020-10-14 23:44:43,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:44:43,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:43,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:44:43,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:44:43,420 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 31 states. [2020-10-14 23:44:44,506 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-14 23:44:47,706 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-14 23:44:48,609 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-14 23:44:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:49,530 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-14 23:44:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:44:49,532 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 54 [2020-10-14 23:44:49,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:49,533 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:44:49,533 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:44:49,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=146, Invalid=1924, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:44:49,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:44:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-14 23:44:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:44:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-14 23:44:49,542 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 54 [2020-10-14 23:44:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:49,542 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-14 23:44:49,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:44:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-14 23:44:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:44:49,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:49,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:49,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:44:49,544 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1594211128, now seen corresponding path program 3 times [2020-10-14 23:44:49,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:49,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155574585] [2020-10-14 23:44:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:44:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:44:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:51,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:51,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:51,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:51,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:44:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:44:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:52,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:44:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:52,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:44:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:52,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:44:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:52,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:52,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 23:44:52,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:52,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:44:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:44:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,886 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-14 23:44:53,203 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-14 23:44:53,507 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-14 23:44:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:53,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:53,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:53,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:54,359 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-14 23:44:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:44:54,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155574585] [2020-10-14 23:44:54,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:54,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:44:54,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618713925] [2020-10-14 23:44:54,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:44:54,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:44:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:44:54,382 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 30 states. [2020-10-14 23:44:55,207 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-14 23:44:56,935 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-10-14 23:44:57,953 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2020-10-14 23:44:59,029 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-14 23:44:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:59,332 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-14 23:44:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:44:59,334 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2020-10-14 23:44:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:59,335 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:44:59,336 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:44:59,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=158, Invalid=1912, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:44:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:44:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-14 23:44:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:44:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 23:44:59,346 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 54 [2020-10-14 23:44:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:59,347 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 23:44:59,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:44:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 23:44:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:44:59,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:59,348 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:59,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:44:59,348 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:59,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1268085741, now seen corresponding path program 4 times [2020-10-14 23:44:59,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:59,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485607492] [2020-10-14 23:44:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:00,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:00,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:45:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:01,065 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-14 23:45:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:01,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:01,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:45:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:01,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:01,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:45:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:02,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:45:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:02,511 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-10-14 23:45:02,678 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-14 23:45:02,852 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-14 23:45:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:45:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:02,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:02,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:02,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:45:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:45:02,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:02,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:45:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:45:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:45:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:03,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:45:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:45:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:45:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:03,528 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-14 23:45:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:45:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:03,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:45:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 23:45:03,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:03,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:45:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:45:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:45:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:09,080 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2020-10-14 23:46:05,136 WARN L193 SmtUtils]: Spent 54.78 s on a formula simplification. DAG size of input: 376 DAG size of output: 231