/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/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:24:53,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:24:53,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:24:53,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:24:53,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:24:53,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:24:53,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:24:53,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:24:53,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:24:53,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:24:53,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:24:53,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:24:53,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:24:53,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:24:53,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:24:53,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:24:53,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:24:53,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:24:53,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:24:53,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:24:53,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:24:53,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:24:53,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:24:53,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:24:53,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:24:53,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:24:53,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:24:53,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:24:53,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:24:53,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:24:53,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:24:53,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:24:53,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:24:53,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:24:53,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:24:53,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:24:53,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:24:53,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:24:53,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:24:53,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:24:53,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:24:53,723 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 23:24:53,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:24:53,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:24:53,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:24:53,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:24:53,772 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:24:53,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:24:53,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:24:53,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:24:53,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:24:53,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:24:53,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:24:53,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:24:53,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:24:53,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:24:53,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:24:53,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:24:53,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:24:53,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:24:53,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:24:53,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:24:53,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:24:53,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:24:53,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:24:53,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:24:53,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:24:53,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:24:53,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:24:53,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:24:53,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:24:53,783 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 23:24:54,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:24:54,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:24:54,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:24:54,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:24:54,138 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:24:54,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2020-10-14 23:24:54,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87584edb6/c18740a6b6fc48eba2a24b9d79aaf645/FLAG4f91e8183 [2020-10-14 23:24:54,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:24:54,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/process_queue.i [2020-10-14 23:24:54,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87584edb6/c18740a6b6fc48eba2a24b9d79aaf645/FLAG4f91e8183 [2020-10-14 23:24:55,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87584edb6/c18740a6b6fc48eba2a24b9d79aaf645 [2020-10-14 23:24:55,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:24:55,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:24:55,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:24:55,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:24:55,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:24:55,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b93891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55, skipping insertion in model container [2020-10-14 23:24:55,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:24:55,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:24:55,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:24:55,583 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:24:55,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:24:55,746 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:24:55,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55 WrapperNode [2020-10-14 23:24:55,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:24:55,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:24:55,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:24:55,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:24:55,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (1/1) ... [2020-10-14 23:24:55,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:24:55,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:24:55,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:24:55,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:24:55,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (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 23:24:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:24:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:24:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:24:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:24:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure run_process [2020-10-14 23:24:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-14 23:24:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_next [2020-10-14 23:24:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure check_queue [2020-10-14 23:24:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:24:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:24:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:24:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:24:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:24:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:24:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:24:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:24:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:24:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:24:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:24:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:24:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:24:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:24:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:24:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:24:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:24:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:24:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:24:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:24:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:24:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:24:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:24:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:24:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:24:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:24:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:24:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:24:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:24:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:24:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:24:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:24:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:24:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:24:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:24:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:24:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:24:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:24:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:24:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:24:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:24:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:24:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:24:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:24:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:24:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:24:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:24:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:24:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:24:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:24:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:24:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:24:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:24:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:24:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:24:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:24:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:24:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:24:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:24:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure run_process [2020-10-14 23:24:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-14 23:24:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:24:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:24:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure choose_next [2020-10-14 23:24:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:24:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:24:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure check_queue [2020-10-14 23:24:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:24:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:24:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:24:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:24:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:24:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:24:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:24:56,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:24:56,514 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:24:56,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:24:56 BoogieIcfgContainer [2020-10-14 23:24:56,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:24:56,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:24:56,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:24:56,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:24:56,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:24:55" (1/3) ... [2020-10-14 23:24:56,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d6d5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:24:56, skipping insertion in model container [2020-10-14 23:24:56,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:55" (2/3) ... [2020-10-14 23:24:56,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d6d5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:24:56, skipping insertion in model container [2020-10-14 23:24:56,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:24:56" (3/3) ... [2020-10-14 23:24:56,531 INFO L109 eAbstractionObserver]: Analyzing ICFG process_queue.i [2020-10-14 23:24:56,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:24:56,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:24:56,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:24:56,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:24:56,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:24:56,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:24:56,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:24:56,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:24:56,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:24:56,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:24:56,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:24:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-14 23:24:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:24:56,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:56,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:56,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash -699499398, now seen corresponding path program 1 times [2020-10-14 23:24:56,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:56,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314938173] [2020-10-14 23:24:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:24:57,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 23:24:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:24:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:24:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:57,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:24:57,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:57,277 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 23:24:57,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314938173] [2020-10-14 23:24:57,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:57,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:24:57,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227955516] [2020-10-14 23:24:57,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:57,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:57,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:57,301 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 7 states. [2020-10-14 23:24:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:57,659 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2020-10-14 23:24:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:57,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-14 23:24:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:57,673 INFO L225 Difference]: With dead ends: 100 [2020-10-14 23:24:57,673 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:24:57,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:24:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 23:24:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:24:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-14 23:24:57,732 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 17 [2020-10-14 23:24:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:57,733 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-14 23:24:57,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-14 23:24:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:24:57,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:57,735 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] [2020-10-14 23:24:57,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:24:57,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:57,736 INFO L82 PathProgramCache]: Analyzing trace with hash -436646864, now seen corresponding path program 1 times [2020-10-14 23:24:57,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:57,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911731366] [2020-10-14 23:24:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:24:58,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-14 23:24:58,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:58,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:24:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:58,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:58,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:24:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:58,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:58,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:24:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:24:58,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:58,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:24:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:24:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:24:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:58,777 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 23:24:58,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911731366] [2020-10-14 23:24:58,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:58,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 23:24:58,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570021604] [2020-10-14 23:24:58,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:58,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:58,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:58,786 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 12 states. [2020-10-14 23:24:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:59,710 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2020-10-14 23:24:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:59,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-14 23:24:59,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:59,714 INFO L225 Difference]: With dead ends: 120 [2020-10-14 23:24:59,714 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:24:59,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:24:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2020-10-14 23:24:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 23:24:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2020-10-14 23:24:59,733 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 20 [2020-10-14 23:24:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:59,733 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2020-10-14 23:24:59,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2020-10-14 23:24:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:24:59,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:59,735 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] [2020-10-14 23:24:59,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:24:59,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:59,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1313067226, now seen corresponding path program 1 times [2020-10-14 23:24:59,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:59,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332516388] [2020-10-14 23:24:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:00,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:25:00,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:00,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 23:25:00,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:00,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:00,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:00,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:25:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:00,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:00,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:00,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:00,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:00,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:00,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:25:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:00,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:00,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332516388] [2020-10-14 23:25:00,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:00,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:00,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117376200] [2020-10-14 23:25:00,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:00,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:00,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:00,311 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 12 states. [2020-10-14 23:25:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:01,349 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2020-10-14 23:25:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:01,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-14 23:25:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:01,352 INFO L225 Difference]: With dead ends: 140 [2020-10-14 23:25:01,352 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 23:25:01,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 23:25:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-10-14 23:25:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:25:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-14 23:25:01,370 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 23 [2020-10-14 23:25:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:01,370 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-14 23:25:01,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-14 23:25:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:25:01,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:01,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:01,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:25:01,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:01,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash 383010943, now seen corresponding path program 1 times [2020-10-14 23:25:01,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:01,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982797178] [2020-10-14 23:25:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:02,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:25:02,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:02,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-14 23:25:02,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:02,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:25:02,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:03,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:03,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:25:03,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:25:03,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:25:03,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:25:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:03,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:25:03,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:25:03,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982797178] [2020-10-14 23:25:03,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:03,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:03,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104175913] [2020-10-14 23:25:03,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:03,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:03,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:03,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:03,284 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 13 states. [2020-10-14 23:25:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:04,263 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2020-10-14 23:25:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:04,263 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-14 23:25:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:04,265 INFO L225 Difference]: With dead ends: 184 [2020-10-14 23:25:04,266 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:25:04,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:25:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2020-10-14 23:25:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 23:25:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2020-10-14 23:25:04,304 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 35 [2020-10-14 23:25:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:04,311 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2020-10-14 23:25:04,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2020-10-14 23:25:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:25:04,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:04,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:04,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:25:04,314 INFO L427 AbstractCegarLoop]: === Iteration 5 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:04,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1445249493, now seen corresponding path program 1 times [2020-10-14 23:25:04,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:04,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960419157] [2020-10-14 23:25:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:25:06,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-14 23:25:06,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:25:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:06,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:06,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:25:06,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:06,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:25:06,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:25:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:25:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:25:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:06,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:25:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:06,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:25:06,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:25:06,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960419157] [2020-10-14 23:25:06,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:06,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:06,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580964139] [2020-10-14 23:25:06,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:06,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:06,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:06,981 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand 16 states. [2020-10-14 23:25:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:08,464 INFO L93 Difference]: Finished difference Result 362 states and 509 transitions. [2020-10-14 23:25:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:25:08,465 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-10-14 23:25:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:08,469 INFO L225 Difference]: With dead ends: 362 [2020-10-14 23:25:08,469 INFO L226 Difference]: Without dead ends: 275 [2020-10-14 23:25:08,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:25:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-14 23:25:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 211. [2020-10-14 23:25:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 23:25:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 289 transitions. [2020-10-14 23:25:08,537 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 289 transitions. Word has length 38 [2020-10-14 23:25:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:08,539 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 289 transitions. [2020-10-14 23:25:08,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 289 transitions. [2020-10-14 23:25:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:25:08,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:08,543 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:08,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:25:08,543 INFO L427 AbstractCegarLoop]: === Iteration 6 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:08,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1053709227, now seen corresponding path program 2 times [2020-10-14 23:25:08,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:08,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321995905] [2020-10-14 23:25:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1874 [2020-10-14 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:25:10,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:10,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:10,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:10,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:10,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:25:10,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:10,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:10,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:10,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:25:10,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:10,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:25:10,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:10,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:25:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:10,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:25:10,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:10,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:10,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321995905] [2020-10-14 23:25:10,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:10,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:10,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172350089] [2020-10-14 23:25:10,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:10,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:10,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:10,909 INFO L87 Difference]: Start difference. First operand 211 states and 289 transitions. Second operand 16 states. [2020-10-14 23:25:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:12,343 INFO L93 Difference]: Finished difference Result 444 states and 626 transitions. [2020-10-14 23:25:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:12,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-14 23:25:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:12,353 INFO L225 Difference]: With dead ends: 444 [2020-10-14 23:25:12,354 INFO L226 Difference]: Without dead ends: 442 [2020-10-14 23:25:12,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:25:12,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-14 23:25:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 381. [2020-10-14 23:25:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 23:25:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 538 transitions. [2020-10-14 23:25:12,397 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 538 transitions. Word has length 41 [2020-10-14 23:25:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:12,397 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 538 transitions. [2020-10-14 23:25:12,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 538 transitions. [2020-10-14 23:25:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:25:12,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:12,400 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:12,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:25:12,400 INFO L427 AbstractCegarLoop]: === Iteration 7 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:12,401 INFO L82 PathProgramCache]: Analyzing trace with hash 868237973, now seen corresponding path program 3 times [2020-10-14 23:25:12,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:12,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837910918] [2020-10-14 23:25:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:12,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:25:14,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-10-14 23:25:14,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:25:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:25:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:14,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:14,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:14,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:25:14,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:25:14,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:25:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:25:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:14,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:25:14,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:25:14,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837910918] [2020-10-14 23:25:14,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:14,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:14,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330446215] [2020-10-14 23:25:14,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:14,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:14,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:14,663 INFO L87 Difference]: Start difference. First operand 381 states and 538 transitions. Second operand 16 states. [2020-10-14 23:25:15,143 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-14 23:25:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:16,563 INFO L93 Difference]: Finished difference Result 713 states and 1009 transitions. [2020-10-14 23:25:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:16,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 23:25:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:16,573 INFO L225 Difference]: With dead ends: 713 [2020-10-14 23:25:16,574 INFO L226 Difference]: Without dead ends: 436 [2020-10-14 23:25:16,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:25:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-14 23:25:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 379. [2020-10-14 23:25:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-14 23:25:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 532 transitions. [2020-10-14 23:25:16,634 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 532 transitions. Word has length 44 [2020-10-14 23:25:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:16,634 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 532 transitions. [2020-10-14 23:25:16,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 532 transitions. [2020-10-14 23:25:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:25:16,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:16,638 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, 1, 1] [2020-10-14 23:25:16,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:25:16,638 INFO L427 AbstractCegarLoop]: === Iteration 8 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:16,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:16,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1706247580, now seen corresponding path program 1 times [2020-10-14 23:25:16,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:16,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640539377] [2020-10-14 23:25:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:25:18,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1692 [2020-10-14 23:25:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:25:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:18,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:25:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:25:18,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:18,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:25:18,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:25:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:18,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:25:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 23:25:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:25:18,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:18,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 23:25:18,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:25:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 23:25:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:25:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:18,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640539377] [2020-10-14 23:25:18,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:18,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:18,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603968532] [2020-10-14 23:25:18,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:18,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:18,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:18,774 INFO L87 Difference]: Start difference. First operand 379 states and 532 transitions. Second operand 14 states. [2020-10-14 23:25:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:19,840 INFO L93 Difference]: Finished difference Result 479 states and 666 transitions. [2020-10-14 23:25:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:19,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-14 23:25:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:19,852 INFO L225 Difference]: With dead ends: 479 [2020-10-14 23:25:19,852 INFO L226 Difference]: Without dead ends: 387 [2020-10-14 23:25:19,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:25:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-14 23:25:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 379. [2020-10-14 23:25:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-14 23:25:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 525 transitions. [2020-10-14 23:25:19,904 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 525 transitions. Word has length 47 [2020-10-14 23:25:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:19,905 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 525 transitions. [2020-10-14 23:25:19,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 525 transitions. [2020-10-14 23:25:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:25:19,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:19,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:19,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:25:19,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:19,907 INFO L82 PathProgramCache]: Analyzing trace with hash -775608654, now seen corresponding path program 1 times [2020-10-14 23:25:19,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:19,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054600881] [2020-10-14 23:25:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 23:25:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:25:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:20,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:20,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:20,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:21,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:21,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:21,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:21,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:25:21,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:21,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:25:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:21,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:25:21,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:21,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:25:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:25:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:25:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:25:21,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:21,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:25:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:21,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 23:25:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:21,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:21,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:21,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:21,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:21,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:21,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:21,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054600881] [2020-10-14 23:25:21,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:21,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:25:21,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857107393] [2020-10-14 23:25:21,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:25:21,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:21,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:25:21,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:25:21,354 INFO L87 Difference]: Start difference. First operand 379 states and 525 transitions. Second operand 20 states. [2020-10-14 23:25:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:23,121 INFO L93 Difference]: Finished difference Result 560 states and 785 transitions. [2020-10-14 23:25:23,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:25:23,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-14 23:25:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:23,128 INFO L225 Difference]: With dead ends: 560 [2020-10-14 23:25:23,128 INFO L226 Difference]: Without dead ends: 558 [2020-10-14 23:25:23,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:25:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-14 23:25:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 532. [2020-10-14 23:25:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-10-14 23:25:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 744 transitions. [2020-10-14 23:25:23,203 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 744 transitions. Word has length 50 [2020-10-14 23:25:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:23,204 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 744 transitions. [2020-10-14 23:25:23,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:25:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 744 transitions. [2020-10-14 23:25:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:25:23,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:23,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:23,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:25:23,207 INFO L427 AbstractCegarLoop]: === Iteration 10 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:23,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2006943180, now seen corresponding path program 1 times [2020-10-14 23:25:23,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:23,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361255472] [2020-10-14 23:25:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:25:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3507 [2020-10-14 23:25:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:26,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:26,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:25:26,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:26,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:25:26,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:26,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:25:26,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:25:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:27,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:25:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 23:25:27,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:27,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:25:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:25:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:25:27,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361255472] [2020-10-14 23:25:27,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:27,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:27,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607583006] [2020-10-14 23:25:27,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:27,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:27,174 INFO L87 Difference]: Start difference. First operand 532 states and 744 transitions. Second operand 16 states. [2020-10-14 23:25:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:28,429 INFO L93 Difference]: Finished difference Result 930 states and 1307 transitions. [2020-10-14 23:25:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:25:28,430 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-14 23:25:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:28,436 INFO L225 Difference]: With dead ends: 930 [2020-10-14 23:25:28,436 INFO L226 Difference]: Without dead ends: 560 [2020-10-14 23:25:28,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:25:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-14 23:25:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 251. [2020-10-14 23:25:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-14 23:25:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 329 transitions. [2020-10-14 23:25:28,481 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 329 transitions. Word has length 51 [2020-10-14 23:25:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:28,481 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 329 transitions. [2020-10-14 23:25:28,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 329 transitions. [2020-10-14 23:25:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:25:28,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:28,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:28,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:25:28,485 INFO L427 AbstractCegarLoop]: === Iteration 11 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:28,486 INFO L82 PathProgramCache]: Analyzing trace with hash 293879410, now seen corresponding path program 1 times [2020-10-14 23:25:28,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:28,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703967787] [2020-10-14 23:25:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:25:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:25:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 23:25:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:25:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:28,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:28,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:28,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:28,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:28,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:28,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:28,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:28,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:28,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:25:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:25:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:25:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:25:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:25:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:25:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:28,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:25:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:25:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:25:28,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703967787] [2020-10-14 23:25:28,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:25:28,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:25:28,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205842393] [2020-10-14 23:25:28,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:25:28,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:28,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:25:28,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:25:28,655 INFO L87 Difference]: Start difference. First operand 251 states and 329 transitions. Second operand 5 states. [2020-10-14 23:25:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:28,827 INFO L93 Difference]: Finished difference Result 408 states and 545 transitions. [2020-10-14 23:25:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:25:28,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-14 23:25:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:28,830 INFO L225 Difference]: With dead ends: 408 [2020-10-14 23:25:28,830 INFO L226 Difference]: Without dead ends: 252 [2020-10-14 23:25:28,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:25:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-14 23:25:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-14 23:25:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 23:25:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 330 transitions. [2020-10-14 23:25:28,862 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 330 transitions. Word has length 51 [2020-10-14 23:25:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:28,863 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 330 transitions. [2020-10-14 23:25:28,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:25:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 330 transitions. [2020-10-14 23:25:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:25:28,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:28,865 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:28,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:25:28,865 INFO L427 AbstractCegarLoop]: === Iteration 12 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 770494232, now seen corresponding path program 2 times [2020-10-14 23:25:28,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:28,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122992543] [2020-10-14 23:25:28,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:25:30,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:25:30,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-14 23:25:30,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:25:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:25:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:30,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:25:30,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:25:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:25:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:25:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:25:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:25:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 23:25:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:30,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:25:30,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122992543] [2020-10-14 23:25:30,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:30,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:30,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106462345] [2020-10-14 23:25:30,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:30,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:30,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:30,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:30,923 INFO L87 Difference]: Start difference. First operand 252 states and 330 transitions. Second operand 17 states. [2020-10-14 23:25:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:32,526 INFO L93 Difference]: Finished difference Result 512 states and 697 transitions. [2020-10-14 23:25:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:25:32,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-14 23:25:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:32,532 INFO L225 Difference]: With dead ends: 512 [2020-10-14 23:25:32,533 INFO L226 Difference]: Without dead ends: 355 [2020-10-14 23:25:32,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:25:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-14 23:25:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 316. [2020-10-14 23:25:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-14 23:25:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 422 transitions. [2020-10-14 23:25:32,576 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 422 transitions. Word has length 53 [2020-10-14 23:25:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:32,576 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 422 transitions. [2020-10-14 23:25:32,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 422 transitions. [2020-10-14 23:25:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:25:32,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:32,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:32,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:25:32,578 INFO L427 AbstractCegarLoop]: === Iteration 13 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1951040598, now seen corresponding path program 3 times [2020-10-14 23:25:32,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:32,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082737593] [2020-10-14 23:25:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:34,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1977 [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:25:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:25:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:34,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:34,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:34,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:34,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:34,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:25:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:34,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:25:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:34,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:34,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:34,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:25:34,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:34,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:25:34,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:25:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:25:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:25:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:25:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 23:25:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:35,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:35,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082737593] [2020-10-14 23:25:35,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:35,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:25:35,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656531186] [2020-10-14 23:25:35,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:25:35,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:35,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:25:35,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:25:35,869 INFO L87 Difference]: Start difference. First operand 316 states and 422 transitions. Second operand 25 states. [2020-10-14 23:25:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:39,140 INFO L93 Difference]: Finished difference Result 531 states and 733 transitions. [2020-10-14 23:25:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:25:39,141 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-14 23:25:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:39,148 INFO L225 Difference]: With dead ends: 531 [2020-10-14 23:25:39,149 INFO L226 Difference]: Without dead ends: 529 [2020-10-14 23:25:39,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=296, Invalid=2254, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:25:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-14 23:25:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 397. [2020-10-14 23:25:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-14 23:25:39,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 540 transitions. [2020-10-14 23:25:39,213 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 540 transitions. Word has length 53 [2020-10-14 23:25:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:39,214 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 540 transitions. [2020-10-14 23:25:39,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:25:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 540 transitions. [2020-10-14 23:25:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:25:39,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:39,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:39,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:25:39,216 INFO L427 AbstractCegarLoop]: === Iteration 14 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:39,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1322229528, now seen corresponding path program 1 times [2020-10-14 23:25:39,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:39,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932013025] [2020-10-14 23:25:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:25:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2091 [2020-10-14 23:25:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:25:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:25:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:41,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:25:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:25:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:41,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:25:41,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:25:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 23:25:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:41,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932013025] [2020-10-14 23:25:41,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:41,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:25:41,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056324804] [2020-10-14 23:25:41,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:25:41,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:41,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:25:41,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:41,817 INFO L87 Difference]: Start difference. First operand 397 states and 540 transitions. Second operand 18 states. [2020-10-14 23:25:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:43,696 INFO L93 Difference]: Finished difference Result 804 states and 1117 transitions. [2020-10-14 23:25:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:25:43,697 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-14 23:25:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:43,700 INFO L225 Difference]: With dead ends: 804 [2020-10-14 23:25:43,700 INFO L226 Difference]: Without dead ends: 514 [2020-10-14 23:25:43,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:25:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-14 23:25:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 393. [2020-10-14 23:25:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-14 23:25:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 536 transitions. [2020-10-14 23:25:43,750 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 536 transitions. Word has length 54 [2020-10-14 23:25:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:43,751 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 536 transitions. [2020-10-14 23:25:43,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:25:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 536 transitions. [2020-10-14 23:25:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:25:43,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:43,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:43,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:25:43,753 INFO L427 AbstractCegarLoop]: === Iteration 15 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1550792858, now seen corresponding path program 4 times [2020-10-14 23:25:43,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:43,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675835029] [2020-10-14 23:25:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:48,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:48,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:25:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 23:25:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:48,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:25:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:25:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:25:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:49,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:25:49,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:49,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:49,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:49,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:25:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:25:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:25:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 23:25:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:49,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:49,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:25:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:25:49,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675835029] [2020-10-14 23:25:49,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:49,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:49,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873780313] [2020-10-14 23:25:49,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:49,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:49,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:49,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:49,368 INFO L87 Difference]: Start difference. First operand 393 states and 536 transitions. Second operand 17 states. [2020-10-14 23:25:49,748 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 23:25:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:51,841 INFO L93 Difference]: Finished difference Result 841 states and 1187 transitions. [2020-10-14 23:25:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:25:51,846 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-14 23:25:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:51,851 INFO L225 Difference]: With dead ends: 841 [2020-10-14 23:25:51,851 INFO L226 Difference]: Without dead ends: 555 [2020-10-14 23:25:51,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:25:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-10-14 23:25:51,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 390. [2020-10-14 23:25:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-14 23:25:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 533 transitions. [2020-10-14 23:25:51,903 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 533 transitions. Word has length 56 [2020-10-14 23:25:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:51,903 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 533 transitions. [2020-10-14 23:25:51,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 533 transitions. [2020-10-14 23:25:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:25:51,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:51,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-14 23:25:51,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:25:51,905 INFO L427 AbstractCegarLoop]: === Iteration 16 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1658828625, now seen corresponding path program 1 times [2020-10-14 23:25:51,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:51,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397759036] [2020-10-14 23:25:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:53,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:25:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:57,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:25:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:25:57,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:25:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:25:57,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:25:57,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 23:25:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:25:57,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:25:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:25:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:25:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:25:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 23:25:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:25:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:25:57,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:25:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:25:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:25:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:25:57,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:25:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:25:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:25:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:25:57,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397759036] [2020-10-14 23:25:57,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:57,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:57,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193816291] [2020-10-14 23:25:57,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:57,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:57,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:57,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:57,275 INFO L87 Difference]: Start difference. First operand 390 states and 533 transitions. Second operand 13 states. [2020-10-14 23:25:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:58,291 INFO L93 Difference]: Finished difference Result 820 states and 1148 transitions. [2020-10-14 23:25:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:25:58,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-14 23:25:58,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:58,295 INFO L225 Difference]: With dead ends: 820 [2020-10-14 23:25:58,295 INFO L226 Difference]: Without dead ends: 527 [2020-10-14 23:25:58,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:25:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-14 23:25:58,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525. [2020-10-14 23:25:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-14 23:25:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 723 transitions. [2020-10-14 23:25:58,351 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 723 transitions. Word has length 59 [2020-10-14 23:25:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:58,351 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 723 transitions. [2020-10-14 23:25:58,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 723 transitions. [2020-10-14 23:25:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:25:58,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:58,353 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:58,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:25:58,353 INFO L427 AbstractCegarLoop]: === Iteration 17 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:58,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1297023460, now seen corresponding path program 5 times [2020-10-14 23:25:58,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:58,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030903183] [2020-10-14 23:25:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:26:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:03,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:03,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:03,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:26:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:26:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:03,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:26:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:03,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:26:03,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:26:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:03,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:26:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 23:26:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:26:03,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:26:04,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030903183] [2020-10-14 23:26:04,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:04,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:26:04,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87775924] [2020-10-14 23:26:04,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:26:04,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:04,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:26:04,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:26:04,113 INFO L87 Difference]: Start difference. First operand 525 states and 723 transitions. Second operand 21 states. [2020-10-14 23:26:04,526 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-14 23:26:07,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:07,885 INFO L93 Difference]: Finished difference Result 1111 states and 1531 transitions. [2020-10-14 23:26:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:26:07,886 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-10-14 23:26:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:07,891 INFO L225 Difference]: With dead ends: 1111 [2020-10-14 23:26:07,891 INFO L226 Difference]: Without dead ends: 773 [2020-10-14 23:26:07,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=344, Invalid=2206, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:26:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-14 23:26:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 627. [2020-10-14 23:26:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-14 23:26:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 861 transitions. [2020-10-14 23:26:07,965 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 861 transitions. Word has length 59 [2020-10-14 23:26:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:07,966 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 861 transitions. [2020-10-14 23:26:07,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:26:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 861 transitions. [2020-10-14 23:26:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:26:07,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:07,968 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:07,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:26:07,968 INFO L427 AbstractCegarLoop]: === Iteration 18 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:07,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash 517194682, now seen corresponding path program 6 times [2020-10-14 23:26:07,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:07,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608604509] [2020-10-14 23:26:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 23:26:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:13,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:26:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:13,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:26:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:13,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:26:13,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:26:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:26:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:26:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:26:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:26:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:26:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:13,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:26:13,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:14,165 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-14 23:26:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:26:14,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608604509] [2020-10-14 23:26:14,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:14,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:14,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932924033] [2020-10-14 23:26:14,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:14,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:14,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:14,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:14,191 INFO L87 Difference]: Start difference. First operand 627 states and 861 transitions. Second operand 20 states. [2020-10-14 23:26:14,940 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2020-10-14 23:26:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:17,281 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2020-10-14 23:26:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:26:17,281 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-14 23:26:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:17,288 INFO L225 Difference]: With dead ends: 994 [2020-10-14 23:26:17,288 INFO L226 Difference]: Without dead ends: 992 [2020-10-14 23:26:17,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:26:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-10-14 23:26:17,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 948. [2020-10-14 23:26:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-10-14 23:26:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1319 transitions. [2020-10-14 23:26:17,395 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1319 transitions. Word has length 65 [2020-10-14 23:26:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:17,395 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1319 transitions. [2020-10-14 23:26:17,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1319 transitions. [2020-10-14 23:26:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:26:17,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:17,398 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:17,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:26:17,398 INFO L427 AbstractCegarLoop]: === Iteration 19 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:17,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1702933776, now seen corresponding path program 7 times [2020-10-14 23:26:17,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:17,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509346400] [2020-10-14 23:26:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:22,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:26:22,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:26:22,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:22,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:26:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:26:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:22,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:22,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:22,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:22,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:23,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:23,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:26:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:23,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:23,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:23,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:23,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:26:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:26:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:23,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:26:23,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:23,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:23,460 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-14 23:26:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:26:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:23,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:23,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:26:23,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:23,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:26:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 23:26:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:23,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:26:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:23,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:26:23,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509346400] [2020-10-14 23:26:23,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:23,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:23,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118508599] [2020-10-14 23:26:23,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:23,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:23,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:23,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:23,742 INFO L87 Difference]: Start difference. First operand 948 states and 1319 transitions. Second operand 20 states. [2020-10-14 23:26:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:26,431 INFO L93 Difference]: Finished difference Result 1438 states and 1993 transitions. [2020-10-14 23:26:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:26:26,432 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-10-14 23:26:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:26,437 INFO L225 Difference]: With dead ends: 1438 [2020-10-14 23:26:26,438 INFO L226 Difference]: Without dead ends: 953 [2020-10-14 23:26:26,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:26:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-10-14 23:26:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 947. [2020-10-14 23:26:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-10-14 23:26:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1316 transitions. [2020-10-14 23:26:26,575 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1316 transitions. Word has length 68 [2020-10-14 23:26:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:26,575 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1316 transitions. [2020-10-14 23:26:26,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1316 transitions. [2020-10-14 23:26:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 23:26:26,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:26,579 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-14 23:26:26,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:26:26,579 INFO L427 AbstractCegarLoop]: === Iteration 20 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash -484780269, now seen corresponding path program 4 times [2020-10-14 23:26:26,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:26,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592070901] [2020-10-14 23:26:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:31,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 23:26:31,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 23:26:31,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:31,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:26:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:26:31,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:31,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:31,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:31,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:31,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:31,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:32,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:26:32,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:26:32,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:26:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:26:32,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:26:32,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:26:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:26:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 23:26:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:32,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:26:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:26:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:32,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:26:32,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:26:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 23:26:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:32,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:26:32,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:32,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:26:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:26:32,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592070901] [2020-10-14 23:26:32,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:32,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:26:32,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134971769] [2020-10-14 23:26:32,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:26:32,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:26:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:26:32,460 INFO L87 Difference]: Start difference. First operand 947 states and 1316 transitions. Second operand 23 states. [2020-10-14 23:26:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:36,409 INFO L93 Difference]: Finished difference Result 1532 states and 2116 transitions. [2020-10-14 23:26:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:26:36,415 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-10-14 23:26:36,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:36,424 INFO L225 Difference]: With dead ends: 1532 [2020-10-14 23:26:36,425 INFO L226 Difference]: Without dead ends: 1530 [2020-10-14 23:26:36,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=336, Invalid=2214, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:26:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-14 23:26:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1170. [2020-10-14 23:26:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2020-10-14 23:26:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1610 transitions. [2020-10-14 23:26:36,589 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1610 transitions. Word has length 71 [2020-10-14 23:26:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:36,590 INFO L479 AbstractCegarLoop]: Abstraction has 1170 states and 1610 transitions. [2020-10-14 23:26:36,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:26:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1610 transitions. [2020-10-14 23:26:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:26:36,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:36,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:36,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:26:36,594 INFO L427 AbstractCegarLoop]: === Iteration 21 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash -429973120, now seen corresponding path program 2 times [2020-10-14 23:26:36,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:36,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614320207] [2020-10-14 23:26:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:36,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:26:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:41,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:41,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:41,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:41,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:41,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:26:41,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:26:41,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:26:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:41,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:26:41,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:26:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:26:41,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 23:26:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:26:41,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:26:41,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:26:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 23:26:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:41,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:26:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 23:26:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:26:41,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:41,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:26:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:26:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:41,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:41,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:26:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 23:26:41,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614320207] [2020-10-14 23:26:41,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:41,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:26:41,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016481541] [2020-10-14 23:26:41,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:26:41,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:26:41,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:26:41,829 INFO L87 Difference]: Start difference. First operand 1170 states and 1610 transitions. Second operand 11 states. [2020-10-14 23:26:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:42,472 INFO L93 Difference]: Finished difference Result 1850 states and 2546 transitions. [2020-10-14 23:26:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:26:42,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-14 23:26:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:42,478 INFO L225 Difference]: With dead ends: 1850 [2020-10-14 23:26:42,478 INFO L226 Difference]: Without dead ends: 659 [2020-10-14 23:26:42,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:26:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-14 23:26:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 555. [2020-10-14 23:26:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-10-14 23:26:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 748 transitions. [2020-10-14 23:26:42,545 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 748 transitions. Word has length 74 [2020-10-14 23:26:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:42,545 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 748 transitions. [2020-10-14 23:26:42,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:26:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 748 transitions. [2020-10-14 23:26:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:26:42,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:42,547 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-14 23:26:42,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:26:42,547 INFO L427 AbstractCegarLoop]: === Iteration 22 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1230998491, now seen corresponding path program 5 times [2020-10-14 23:26:42,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:42,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492687584] [2020-10-14 23:26:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:26:44,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-10-14 23:26:44,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:44,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:26:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:26:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:45,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:45,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:45,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:26:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:26:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:26:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:26:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:26:45,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:26:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:26:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:26:45,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:26:45,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:26:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:26:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 23:26:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:45,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:45,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:26:45,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 23:26:45,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492687584] [2020-10-14 23:26:45,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:45,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:45,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259105809] [2020-10-14 23:26:45,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:45,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:45,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:45,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:45,725 INFO L87 Difference]: Start difference. First operand 555 states and 748 transitions. Second operand 20 states. [2020-10-14 23:26:48,284 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-14 23:26:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:48,445 INFO L93 Difference]: Finished difference Result 737 states and 1010 transitions. [2020-10-14 23:26:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:26:48,449 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-14 23:26:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:48,453 INFO L225 Difference]: With dead ends: 737 [2020-10-14 23:26:48,453 INFO L226 Difference]: Without dead ends: 735 [2020-10-14 23:26:48,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:26:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-14 23:26:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 729. [2020-10-14 23:26:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-14 23:26:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 999 transitions. [2020-10-14 23:26:48,542 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 999 transitions. Word has length 74 [2020-10-14 23:26:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:48,542 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 999 transitions. [2020-10-14 23:26:48,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 999 transitions. [2020-10-14 23:26:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:26:48,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:48,545 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-14 23:26:48,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:26:48,545 INFO L427 AbstractCegarLoop]: === Iteration 23 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:48,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1889875735, now seen corresponding path program 6 times [2020-10-14 23:26:48,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:48,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29851244] [2020-10-14 23:26:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:53,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:26:53,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:26:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:26:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:53,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:26:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 23:26:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:26:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:53,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:53,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:53,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:26:53,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:53,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:26:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:26:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:26:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:26:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:53,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:26:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 23:26:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:53,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:26:53,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:26:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:53,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:26:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:26:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 23:26:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:54,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:54,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:26:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 23:26:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:26:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:26:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 23:26:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:54,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:54,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:26:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 23:26:54,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29851244] [2020-10-14 23:26:54,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:54,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:26:54,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273894817] [2020-10-14 23:26:54,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:26:54,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:26:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:26:54,376 INFO L87 Difference]: Start difference. First operand 729 states and 999 transitions. Second operand 21 states. [2020-10-14 23:26:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:57,144 INFO L93 Difference]: Finished difference Result 1431 states and 1986 transitions. [2020-10-14 23:26:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:26:57,145 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-10-14 23:26:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:57,150 INFO L225 Difference]: With dead ends: 1431 [2020-10-14 23:26:57,150 INFO L226 Difference]: Without dead ends: 822 [2020-10-14 23:26:57,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:26:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-14 23:26:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 763. [2020-10-14 23:26:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-14 23:26:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1041 transitions. [2020-10-14 23:26:57,242 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1041 transitions. Word has length 74 [2020-10-14 23:26:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:57,242 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1041 transitions. [2020-10-14 23:26:57,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:26:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1041 transitions. [2020-10-14 23:26:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 23:26:57,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:57,244 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 23:26:57,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:26:57,245 INFO L427 AbstractCegarLoop]: === Iteration 24 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:57,245 INFO L82 PathProgramCache]: Analyzing trace with hash -475760691, now seen corresponding path program 2 times [2020-10-14 23:26:57,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:57,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325907046] [2020-10-14 23:26:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:27:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 23:27:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:02,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:27:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:02,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:27:02,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:27:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:27:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:27:02,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:27:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:27:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:02,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:27:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:27:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:27:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:27:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:27:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:27:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:03,428 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-14 23:27:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:27:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:27:03,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325907046] [2020-10-14 23:27:03,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:03,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:27:03,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059334999] [2020-10-14 23:27:03,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:27:03,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:03,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:27:03,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:27:03,541 INFO L87 Difference]: Start difference. First operand 763 states and 1041 transitions. Second operand 26 states. [2020-10-14 23:27:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:07,436 INFO L93 Difference]: Finished difference Result 871 states and 1207 transitions. [2020-10-14 23:27:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:27:07,437 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 75 [2020-10-14 23:27:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:07,442 INFO L225 Difference]: With dead ends: 871 [2020-10-14 23:27:07,443 INFO L226 Difference]: Without dead ends: 869 [2020-10-14 23:27:07,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:27:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-10-14 23:27:07,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 862. [2020-10-14 23:27:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-14 23:27:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1196 transitions. [2020-10-14 23:27:07,631 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1196 transitions. Word has length 75 [2020-10-14 23:27:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:07,632 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 1196 transitions. [2020-10-14 23:27:07,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:27:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1196 transitions. [2020-10-14 23:27:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 23:27:07,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:07,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 23:27:07,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:27:07,635 INFO L427 AbstractCegarLoop]: === Iteration 25 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash -938303649, now seen corresponding path program 1 times [2020-10-14 23:27:07,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:07,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234153101] [2020-10-14 23:27:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:08,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 23:27:10,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 23:27:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:27:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:27:10,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:27:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:10,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:27:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:27:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:10,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:27:10,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:27:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:27:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:27:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:27:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:27:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:11,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:11,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:11,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 23:27:11,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234153101] [2020-10-14 23:27:11,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:11,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:27:11,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486075686] [2020-10-14 23:27:11,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:27:11,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:27:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:27:11,264 INFO L87 Difference]: Start difference. First operand 862 states and 1196 transitions. Second operand 18 states. [2020-10-14 23:27:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:13,107 INFO L93 Difference]: Finished difference Result 1066 states and 1505 transitions. [2020-10-14 23:27:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:27:13,107 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2020-10-14 23:27:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:13,113 INFO L225 Difference]: With dead ends: 1066 [2020-10-14 23:27:13,113 INFO L226 Difference]: Without dead ends: 1064 [2020-10-14 23:27:13,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:27:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-10-14 23:27:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 904. [2020-10-14 23:27:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-14 23:27:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1272 transitions. [2020-10-14 23:27:13,217 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1272 transitions. Word has length 75 [2020-10-14 23:27:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:13,217 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1272 transitions. [2020-10-14 23:27:13,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:27:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1272 transitions. [2020-10-14 23:27:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:27:13,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:13,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:13,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:27:13,219 INFO L427 AbstractCegarLoop]: === Iteration 26 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash 999231671, now seen corresponding path program 1 times [2020-10-14 23:27:13,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:13,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180216810] [2020-10-14 23:27:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:27:18,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:27:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:18,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:18,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:27:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:18,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:27:18,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:27:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:27:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:27:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:27:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:18,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:27:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:27:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:18,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:27:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:27:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:27:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 23:27:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:19,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:19,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 23:27:19,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180216810] [2020-10-14 23:27:19,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:19,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:27:19,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651629112] [2020-10-14 23:27:19,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:27:19,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:19,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:27:19,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:27:19,112 INFO L87 Difference]: Start difference. First operand 904 states and 1272 transitions. Second operand 20 states. [2020-10-14 23:27:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:21,563 INFO L93 Difference]: Finished difference Result 1026 states and 1459 transitions. [2020-10-14 23:27:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:27:21,564 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-10-14 23:27:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:21,571 INFO L225 Difference]: With dead ends: 1026 [2020-10-14 23:27:21,572 INFO L226 Difference]: Without dead ends: 1024 [2020-10-14 23:27:21,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:27:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-14 23:27:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 910. [2020-10-14 23:27:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-10-14 23:27:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1289 transitions. [2020-10-14 23:27:21,695 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1289 transitions. Word has length 76 [2020-10-14 23:27:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:21,695 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1289 transitions. [2020-10-14 23:27:21,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:27:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1289 transitions. [2020-10-14 23:27:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 23:27:21,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:21,697 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-14 23:27:21,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:27:21,698 INFO L427 AbstractCegarLoop]: === Iteration 27 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:21,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2053548229, now seen corresponding path program 7 times [2020-10-14 23:27:21,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:21,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546253558] [2020-10-14 23:27:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:26,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:26,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:27:26,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:27:26,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:27:26,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:26,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:27:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:27:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:27:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:27,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:27:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:27:27,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:27:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:27:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:27:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:27,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:27:27,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:27:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:27:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:27:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:27:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:27:27,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:27:27,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:27:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:27:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:28,021 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-14 23:27:28,263 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-14 23:27:28,577 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-14 23:27:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 23:27:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:28,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:28,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:28,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:28,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:28,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:27:28,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546253558] [2020-10-14 23:27:28,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:28,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:27:28,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644917746] [2020-10-14 23:27:28,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:27:28,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:28,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:27:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:28,625 INFO L87 Difference]: Start difference. First operand 910 states and 1289 transitions. Second operand 27 states. [2020-10-14 23:27:29,062 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-14 23:27:30,866 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 23:27:32,289 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-14 23:27:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:34,181 INFO L93 Difference]: Finished difference Result 1347 states and 1917 transitions. [2020-10-14 23:27:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:27:34,182 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 77 [2020-10-14 23:27:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:34,192 INFO L225 Difference]: With dead ends: 1347 [2020-10-14 23:27:34,192 INFO L226 Difference]: Without dead ends: 1345 [2020-10-14 23:27:34,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=409, Invalid=3131, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 23:27:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-10-14 23:27:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1260. [2020-10-14 23:27:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2020-10-14 23:27:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1804 transitions. [2020-10-14 23:27:34,359 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1804 transitions. Word has length 77 [2020-10-14 23:27:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:34,359 INFO L479 AbstractCegarLoop]: Abstraction has 1260 states and 1804 transitions. [2020-10-14 23:27:34,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:27:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1804 transitions. [2020-10-14 23:27:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 23:27:34,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:34,362 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-14 23:27:34,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:27:34,362 INFO L427 AbstractCegarLoop]: === Iteration 28 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:34,363 INFO L82 PathProgramCache]: Analyzing trace with hash -667986601, now seen corresponding path program 8 times [2020-10-14 23:27:34,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:34,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996246170] [2020-10-14 23:27:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:35,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:39,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:39,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:27:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:39,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:39,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:27:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:39,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:27:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:39,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:27:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:27:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:27:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:40,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:40,356 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-14 23:27:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:27:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:40,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:40,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:40,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:27:40,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:40,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:27:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:27:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:40,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:40,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:27:40,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 23:27:40,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:40,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:27:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:27:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:41,004 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-14 23:27:41,271 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-14 23:27:41,645 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-14 23:27:42,088 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 23:27:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 23:27:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:42,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:42,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:42,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:42,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:27:42,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996246170] [2020-10-14 23:27:42,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:42,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:27:42,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840458033] [2020-10-14 23:27:42,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:27:42,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:27:42,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:42,148 INFO L87 Difference]: Start difference. First operand 1260 states and 1804 transitions. Second operand 27 states. [2020-10-14 23:27:42,846 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-14 23:27:45,328 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-14 23:27:45,924 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 23:27:48,150 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 49 [2020-10-14 23:27:48,452 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 60 [2020-10-14 23:27:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:49,438 INFO L93 Difference]: Finished difference Result 1604 states and 2306 transitions. [2020-10-14 23:27:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:27:49,440 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 77 [2020-10-14 23:27:49,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:49,451 INFO L225 Difference]: With dead ends: 1604 [2020-10-14 23:27:49,451 INFO L226 Difference]: Without dead ends: 1602 [2020-10-14 23:27:49,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:27:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2020-10-14 23:27:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1359. [2020-10-14 23:27:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-10-14 23:27:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1968 transitions. [2020-10-14 23:27:49,606 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1968 transitions. Word has length 77 [2020-10-14 23:27:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:49,607 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1968 transitions. [2020-10-14 23:27:49,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:27:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1968 transitions. [2020-10-14 23:27:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:27:49,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:49,609 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 23:27:49,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:27:49,610 INFO L427 AbstractCegarLoop]: === Iteration 29 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash 9184285, now seen corresponding path program 3 times [2020-10-14 23:27:49,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:49,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848580768] [2020-10-14 23:27:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:27:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:27:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:54,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:27:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:27:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:27:54,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:27:54,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:27:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:27:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:27:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:27:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:27:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:27:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:55,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:27:55,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:27:55,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:55,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:27:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:27:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:27:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:55,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:27:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:55,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:55,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:27:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:27:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 23:27:55,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848580768] [2020-10-14 23:27:55,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:55,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:27:55,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569693707] [2020-10-14 23:27:55,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:27:55,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:55,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:27:55,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:27:55,330 INFO L87 Difference]: Start difference. First operand 1359 states and 1968 transitions. Second operand 22 states. [2020-10-14 23:27:57,455 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-14 23:27:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:57,903 INFO L93 Difference]: Finished difference Result 2425 states and 3503 transitions. [2020-10-14 23:27:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:27:57,904 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 78 [2020-10-14 23:27:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:57,913 INFO L225 Difference]: With dead ends: 2425 [2020-10-14 23:27:57,914 INFO L226 Difference]: Without dead ends: 1635 [2020-10-14 23:27:57,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:27:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2020-10-14 23:27:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1611. [2020-10-14 23:27:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2020-10-14 23:27:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2318 transitions. [2020-10-14 23:27:58,089 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2318 transitions. Word has length 78 [2020-10-14 23:27:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:58,089 INFO L479 AbstractCegarLoop]: Abstraction has 1611 states and 2318 transitions. [2020-10-14 23:27:58,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:27:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2318 transitions. [2020-10-14 23:27:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:27:58,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:58,091 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:58,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:27:58,092 INFO L427 AbstractCegarLoop]: === Iteration 30 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:58,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:58,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1582616751, now seen corresponding path program 4 times [2020-10-14 23:27:58,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:58,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126251456] [2020-10-14 23:27:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:28:03,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:28:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 23:28:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:28:03,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:03,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:03,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:28:03,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:28:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:28:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:03,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:28:03,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:03,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:28:03,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:03,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:28:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:28:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:28:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:28:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:28:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:28:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 23:28:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:03,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:28:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:03,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 23:28:03,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126251456] [2020-10-14 23:28:03,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:03,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:28:03,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765026571] [2020-10-14 23:28:03,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:28:03,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:28:03,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:28:03,544 INFO L87 Difference]: Start difference. First operand 1611 states and 2318 transitions. Second operand 12 states. [2020-10-14 23:28:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:04,533 INFO L93 Difference]: Finished difference Result 2628 states and 3808 transitions. [2020-10-14 23:28:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:28:04,534 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-14 23:28:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:04,542 INFO L225 Difference]: With dead ends: 2628 [2020-10-14 23:28:04,543 INFO L226 Difference]: Without dead ends: 1629 [2020-10-14 23:28:04,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:28:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-10-14 23:28:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1619. [2020-10-14 23:28:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-10-14 23:28:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2339 transitions. [2020-10-14 23:28:04,713 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2339 transitions. Word has length 78 [2020-10-14 23:28:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:04,713 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 2339 transitions. [2020-10-14 23:28:04,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:28:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2339 transitions. [2020-10-14 23:28:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:28:04,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:04,715 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:04,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:28:04,715 INFO L427 AbstractCegarLoop]: === Iteration 31 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:04,716 INFO L82 PathProgramCache]: Analyzing trace with hash -202261285, now seen corresponding path program 5 times [2020-10-14 23:28:04,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:04,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839063997] [2020-10-14 23:28:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:04,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:28:06,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:28:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-14 23:28:06,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:28:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 23:28:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:28:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:06,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:28:06,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:06,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:28:06,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:28:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:28:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:07,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:07,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:28:07,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:28:07,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:28:07,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:07,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:07,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:28:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:07,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:28:07,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 23:28:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:07,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:07,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 23:28:07,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839063997] [2020-10-14 23:28:07,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:07,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:28:07,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575051097] [2020-10-14 23:28:07,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:28:07,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:07,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:28:07,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:28:07,065 INFO L87 Difference]: Start difference. First operand 1619 states and 2339 transitions. Second operand 10 states. [2020-10-14 23:28:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:07,755 INFO L93 Difference]: Finished difference Result 3023 states and 4422 transitions. [2020-10-14 23:28:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:28:07,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-14 23:28:07,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:07,765 INFO L225 Difference]: With dead ends: 3023 [2020-10-14 23:28:07,765 INFO L226 Difference]: Without dead ends: 1645 [2020-10-14 23:28:07,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:28:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-10-14 23:28:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1632. [2020-10-14 23:28:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2020-10-14 23:28:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2369 transitions. [2020-10-14 23:28:07,933 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2369 transitions. Word has length 78 [2020-10-14 23:28:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:07,934 INFO L479 AbstractCegarLoop]: Abstraction has 1632 states and 2369 transitions. [2020-10-14 23:28:07,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:28:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2369 transitions. [2020-10-14 23:28:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:28:07,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:07,935 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 23:28:07,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:28:07,936 INFO L427 AbstractCegarLoop]: === Iteration 32 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:07,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1352991925, now seen corresponding path program 2 times [2020-10-14 23:28:07,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:07,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542465700] [2020-10-14 23:28:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:28:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:28:13,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:13,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:28:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:28:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:13,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:28:13,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:28:13,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:28:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:28:13,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:28:13,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:28:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:28:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 23:28:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:28:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 23:28:13,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542465700] [2020-10-14 23:28:13,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:13,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:28:13,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793688034] [2020-10-14 23:28:13,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:28:13,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:13,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:28:13,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:28:13,754 INFO L87 Difference]: Start difference. First operand 1632 states and 2369 transitions. Second operand 19 states. [2020-10-14 23:28:14,774 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-14 23:28:16,357 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-14 23:28:16,881 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-14 23:28:17,170 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-14 23:28:17,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:17,357 INFO L93 Difference]: Finished difference Result 3187 states and 4588 transitions. [2020-10-14 23:28:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:28:17,358 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-14 23:28:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:17,370 INFO L225 Difference]: With dead ends: 3187 [2020-10-14 23:28:17,371 INFO L226 Difference]: Without dead ends: 1710 [2020-10-14 23:28:17,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=229, Invalid=1663, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:28:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-10-14 23:28:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1427. [2020-10-14 23:28:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-10-14 23:28:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2032 transitions. [2020-10-14 23:28:17,512 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2032 transitions. Word has length 78 [2020-10-14 23:28:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:17,512 INFO L479 AbstractCegarLoop]: Abstraction has 1427 states and 2032 transitions. [2020-10-14 23:28:17,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:28:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2032 transitions. [2020-10-14 23:28:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:28:17,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:17,513 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:17,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:28:17,514 INFO L427 AbstractCegarLoop]: === Iteration 33 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash 220440541, now seen corresponding path program 3 times [2020-10-14 23:28:17,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:17,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895010283] [2020-10-14 23:28:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:22,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 23:28:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:22,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:22,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:22,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:22,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:22,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:28:22,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:22,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:22,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:22,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:22,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:28:22,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:22,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:22,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:22,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:22,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:22,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:28:22,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:22,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:28:23,216 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-14 23:28:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:23,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:23,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:23,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:28:23,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:23,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:23,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:28:23,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:28:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:23,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:23,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:28:23,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 23:28:23,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:23,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:28:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:28:23,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:23,647 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-14 23:28:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 23:28:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:23,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 23:28:23,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895010283] [2020-10-14 23:28:23,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:23,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:28:23,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756865461] [2020-10-14 23:28:23,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:28:23,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:23,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:28:23,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:28:23,916 INFO L87 Difference]: Start difference. First operand 1427 states and 2032 transitions. Second operand 17 states. [2020-10-14 23:28:24,339 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-14 23:28:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:26,055 INFO L93 Difference]: Finished difference Result 2231 states and 3185 transitions. [2020-10-14 23:28:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:28:26,056 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2020-10-14 23:28:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:26,065 INFO L225 Difference]: With dead ends: 2231 [2020-10-14 23:28:26,065 INFO L226 Difference]: Without dead ends: 1445 [2020-10-14 23:28:26,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:28:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-10-14 23:28:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1427. [2020-10-14 23:28:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-10-14 23:28:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2032 transitions. [2020-10-14 23:28:26,217 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2032 transitions. Word has length 78 [2020-10-14 23:28:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:26,217 INFO L479 AbstractCegarLoop]: Abstraction has 1427 states and 2032 transitions. [2020-10-14 23:28:26,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:28:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2032 transitions. [2020-10-14 23:28:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:28:26,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:26,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:26,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:28:26,219 INFO L427 AbstractCegarLoop]: === Iteration 34 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:26,220 INFO L82 PathProgramCache]: Analyzing trace with hash -664804243, now seen corresponding path program 4 times [2020-10-14 23:28:26,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:26,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449907010] [2020-10-14 23:28:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:28,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:28:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:31,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:31,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:31,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:31,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:28:31,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:31,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:31,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:28:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:28:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 23:28:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:31,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:28:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:28:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:32,163 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-14 23:28:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 23:28:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:32,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:32,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:32,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:28:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:32,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:28:32,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449907010] [2020-10-14 23:28:32,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:32,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:28:32,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318806241] [2020-10-14 23:28:32,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:28:32,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:32,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:28:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:28:32,380 INFO L87 Difference]: Start difference. First operand 1427 states and 2032 transitions. Second operand 16 states. [2020-10-14 23:28:33,572 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 23:28:34,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:34,431 INFO L93 Difference]: Finished difference Result 2428 states and 3454 transitions. [2020-10-14 23:28:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:28:34,432 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-14 23:28:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:34,440 INFO L225 Difference]: With dead ends: 2428 [2020-10-14 23:28:34,440 INFO L226 Difference]: Without dead ends: 1429 [2020-10-14 23:28:34,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:28:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-10-14 23:28:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1415. [2020-10-14 23:28:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2020-10-14 23:28:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1992 transitions. [2020-10-14 23:28:34,588 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1992 transitions. Word has length 78 [2020-10-14 23:28:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:34,588 INFO L479 AbstractCegarLoop]: Abstraction has 1415 states and 1992 transitions. [2020-10-14 23:28:34,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:28:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1992 transitions. [2020-10-14 23:28:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 23:28:34,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:34,590 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:34,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:28:34,590 INFO L427 AbstractCegarLoop]: === Iteration 35 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:34,591 INFO L82 PathProgramCache]: Analyzing trace with hash 428354424, now seen corresponding path program 9 times [2020-10-14 23:28:34,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:34,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375947694] [2020-10-14 23:28:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 23:28:39,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:28:39,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 23:28:39,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:28:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 23:28:39,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:39,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:39,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:39,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:28:39,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:39,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:28:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 23:28:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:28:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 23:28:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:39,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:39,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:28:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 23:28:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:28:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 23:28:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:39,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 42 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:28:39,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375947694] [2020-10-14 23:28:39,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:39,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:28:39,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362380003] [2020-10-14 23:28:39,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:28:39,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:28:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:28:39,901 INFO L87 Difference]: Start difference. First operand 1415 states and 1992 transitions. Second operand 14 states. [2020-10-14 23:28:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:40,772 INFO L93 Difference]: Finished difference Result 2484 states and 3504 transitions. [2020-10-14 23:28:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:28:40,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-14 23:28:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:40,779 INFO L225 Difference]: With dead ends: 2484 [2020-10-14 23:28:40,779 INFO L226 Difference]: Without dead ends: 1171 [2020-10-14 23:28:40,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:28:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2020-10-14 23:28:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1113. [2020-10-14 23:28:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-10-14 23:28:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1572 transitions. [2020-10-14 23:28:40,890 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1572 transitions. Word has length 83 [2020-10-14 23:28:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:40,890 INFO L479 AbstractCegarLoop]: Abstraction has 1113 states and 1572 transitions. [2020-10-14 23:28:40,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:28:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1572 transitions. [2020-10-14 23:28:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 23:28:40,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:40,891 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:40,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:28:40,892 INFO L427 AbstractCegarLoop]: === Iteration 36 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:40,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1179642507, now seen corresponding path program 8 times [2020-10-14 23:28:40,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:40,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753772646] [2020-10-14 23:28:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:45,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:45,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 23:28:45,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:28:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 23:28:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:45,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:28:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:28:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 23:28:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:46,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:28:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:28:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:28:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:28:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:28:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 23:28:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:46,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:28:46,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:28:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:28:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:28:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 23:28:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:28:46,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:28:46,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:28:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:28:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:28:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 23:28:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:28:46,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:46,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:28:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 101 proven. 29 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 23:28:46,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753772646] [2020-10-14 23:28:46,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:46,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:28:46,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614674139] [2020-10-14 23:28:46,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:28:46,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:28:46,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:28:46,534 INFO L87 Difference]: Start difference. First operand 1113 states and 1572 transitions. Second operand 19 states. [2020-10-14 23:28:46,921 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-14 23:28:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:48,760 INFO L93 Difference]: Finished difference Result 1826 states and 2581 transitions. [2020-10-14 23:28:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:28:48,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-10-14 23:28:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:48,766 INFO L225 Difference]: With dead ends: 1826 [2020-10-14 23:28:48,767 INFO L226 Difference]: Without dead ends: 1179 [2020-10-14 23:28:48,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:28:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-14 23:28:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1120. [2020-10-14 23:28:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-10-14 23:28:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1583 transitions. [2020-10-14 23:28:48,928 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1583 transitions. Word has length 83 [2020-10-14 23:28:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:48,929 INFO L479 AbstractCegarLoop]: Abstraction has 1120 states and 1583 transitions. [2020-10-14 23:28:48,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:28:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1583 transitions. [2020-10-14 23:28:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:28:48,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:48,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:48,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:28:48,931 INFO L427 AbstractCegarLoop]: === Iteration 37 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:48,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1595120736, now seen corresponding path program 2 times [2020-10-14 23:28:48,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:48,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130170709] [2020-10-14 23:28:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:48,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking...