/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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:43:15,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:43:15,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:43:15,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:43:15,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:43:15,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:43:15,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:43:15,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:43:15,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:43:15,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:43:15,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:43:15,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:43:15,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:43:15,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:43:15,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:43:15,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:43:15,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:43:15,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:43:15,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:43:15,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:43:15,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:43:15,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:43:15,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:43:15,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:43:15,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:43:15,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:43:15,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:43:15,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:43:15,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:43:15,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:43:15,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:43:15,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:43:15,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:43:15,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:43:15,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:43:15,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:43:15,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:43:15,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:43:15,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:43:15,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:43:15,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:43:15,781 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 [2020-09-24 22:43:15,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:43:15,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:43:15,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:43:15,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:43:15,809 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:43:15,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:43:15,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:43:15,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:43:15,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:43:15,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:43:15,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:43:15,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:43:15,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:43:15,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:43:15,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:43:15,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:43:15,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:43:15,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:43:15,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:43:15,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:43:15,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:43:15,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:43:15,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:43:15,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:43:15,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:43:15,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:43:15,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:43:15,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:43:15,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:43:15,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement 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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:43:16,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:43:16,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:43:16,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:43:16,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:43:16,293 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:43:16,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-09-24 22:43:16,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a5932118/e0526f3fc0a9434fbe592b9b40c64d30/FLAG9324d2498 [2020-09-24 22:43:17,015 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:43:17,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-09-24 22:43:17,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a5932118/e0526f3fc0a9434fbe592b9b40c64d30/FLAG9324d2498 [2020-09-24 22:43:17,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a5932118/e0526f3fc0a9434fbe592b9b40c64d30 [2020-09-24 22:43:17,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:43:17,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:43:17,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:43:17,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:43:17,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:43:17,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:43:17" (1/1) ... [2020-09-24 22:43:17,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b6db2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:17, skipping insertion in model container [2020-09-24 22:43:17,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:43:17" (1/1) ... [2020-09-24 22:43:17,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:43:17,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:43:17,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:43:17,892 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:43:17,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:43:18,011 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:43:18,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18 WrapperNode [2020-09-24 22:43:18,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:43:18,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:43:18,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:43:18,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:43:18,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (1/1) ... [2020-09-24 22:43:18,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:43:18,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:43:18,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:43:18,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:43:18,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (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 [2020-09-24 22:43:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:43:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:43:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 22:43:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 22:43:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 22:43:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 22:43:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 22:43:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 22:43:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:43:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:43:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:43:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 22:43:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 22:43:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 22:43:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 22:43:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 22:43:18,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 22:43:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 22:43:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 22:43:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 22:43:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 22:43:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 22:43:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 22:43:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 22:43:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 22:43:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 22:43:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 22:43:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 22:43:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 22:43:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 22:43:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 22:43:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 22:43:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 22:43:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 22:43:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 22:43:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 22:43:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 22:43:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 22:43:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 22:43:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 22:43:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 22:43:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 22:43:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 22:43:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 22:43:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 22:43:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 22:43:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 22:43:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 22:43:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 22:43:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 22:43:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 22:43:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 22:43:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 22:43:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:43:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 22:43:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 22:43:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:43:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 22:43:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 22:43:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 22:43:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 22:43:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 22:43:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 22:43:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 22:43:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:43:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:43:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:43:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:43:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:43:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:43:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:43:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:43:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:43:18,580 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 22:43:18,790 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:43:18,790 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 22:43:18,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:43:18 BoogieIcfgContainer [2020-09-24 22:43:18,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:43:18,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:43:18,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:43:18,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:43:18,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:43:17" (1/3) ... [2020-09-24 22:43:18,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55785602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:43:18, skipping insertion in model container [2020-09-24 22:43:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:43:18" (2/3) ... [2020-09-24 22:43:18,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55785602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:43:18, skipping insertion in model container [2020-09-24 22:43:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:43:18" (3/3) ... [2020-09-24 22:43:18,806 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-09-24 22:43:18,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:43:18,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:43:18,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:43:18,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:43:18,883 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:43:18,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:43:18,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:43:18,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:43:18,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:43:18,884 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:43:18,884 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:43:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-24 22:43:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 22:43:18,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:18,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:18,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-09-24 22:43:18,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:18,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744526540] [2020-09-24 22:43:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:19,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:19,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:43:19,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:43:19,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-24 22:43:19,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:43:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:43:19,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:19,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:43:19,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:19,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:19,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744526540] [2020-09-24 22:43:19,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:19,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:43:19,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120082079] [2020-09-24 22:43:19,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:43:19,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:43:19,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:43:19,810 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-09-24 22:43:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:20,054 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2020-09-24 22:43:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:43:20,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-24 22:43:20,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:20,068 INFO L225 Difference]: With dead ends: 110 [2020-09-24 22:43:20,068 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 22:43:20,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:43:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 22:43:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-24 22:43:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 22:43:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-24 22:43:20,126 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 22 [2020-09-24 22:43:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:20,127 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-24 22:43:20,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:43:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-24 22:43:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:43:20,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:20,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:20,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:43:20,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1237633361, now seen corresponding path program 1 times [2020-09-24 22:43:20,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:20,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179738928] [2020-09-24 22:43:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:20,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:20,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:43:20,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 22:43:20,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:20,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:43:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:20,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:20,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:20,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:20,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:43:20,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:20,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:20,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179738928] [2020-09-24 22:43:20,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:20,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:43:20,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148791630] [2020-09-24 22:43:20,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:43:20,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:43:20,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:43:20,392 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-09-24 22:43:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:20,669 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-24 22:43:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:43:20,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-24 22:43:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:20,672 INFO L225 Difference]: With dead ends: 134 [2020-09-24 22:43:20,672 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 22:43:20,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 22:43:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-09-24 22:43:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 22:43:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-09-24 22:43:20,687 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2020-09-24 22:43:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:20,688 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-09-24 22:43:20,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:43:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-09-24 22:43:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 22:43:20,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:20,690 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:20,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:43:20,691 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-09-24 22:43:20,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:20,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957996122] [2020-09-24 22:43:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:20,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:20,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 22:43:20,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 22:43:20,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:43:20,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:20,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:20,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:20,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:43:20,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:20,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957996122] [2020-09-24 22:43:20,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:20,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:43:20,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157162806] [2020-09-24 22:43:20,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:43:20,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:20,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:43:20,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:43:20,953 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-09-24 22:43:21,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:21,236 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-09-24 22:43:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:43:21,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 22:43:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:21,240 INFO L225 Difference]: With dead ends: 137 [2020-09-24 22:43:21,240 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 22:43:21,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 22:43:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-09-24 22:43:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 22:43:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-09-24 22:43:21,255 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-09-24 22:43:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:21,255 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-09-24 22:43:21,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:43:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-09-24 22:43:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 22:43:21,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:21,258 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:21,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:43:21,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:21,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-09-24 22:43:21,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:21,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273550006] [2020-09-24 22:43:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:21,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 22:43:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 22:43:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:43:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:21,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:43:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:21,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273550006] [2020-09-24 22:43:21,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:21,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:43:21,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261197254] [2020-09-24 22:43:21,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:43:21,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:21,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:43:21,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:43:21,544 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-09-24 22:43:21,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:21,771 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-24 22:43:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:43:21,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 22:43:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:21,783 INFO L225 Difference]: With dead ends: 119 [2020-09-24 22:43:21,783 INFO L226 Difference]: Without dead ends: 95 [2020-09-24 22:43:21,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-24 22:43:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-09-24 22:43:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 22:43:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-24 22:43:21,793 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-09-24 22:43:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:21,793 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-24 22:43:21,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:43:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-24 22:43:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 22:43:21,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:21,797 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:21,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:43:21,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:21,800 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-09-24 22:43:21,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:21,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172667488] [2020-09-24 22:43:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:21,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:22,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:22,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:43:22,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 22:43:22,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:43:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:43:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:23,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:23,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:23,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:23,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:43:23,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:23,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:23,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172667488] [2020-09-24 22:43:23,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:23,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:43:23,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72975771] [2020-09-24 22:43:23,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:43:23,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:23,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:43:23,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:43:23,060 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 11 states. [2020-09-24 22:43:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:23,706 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2020-09-24 22:43:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:43:23,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-24 22:43:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:23,709 INFO L225 Difference]: With dead ends: 143 [2020-09-24 22:43:23,710 INFO L226 Difference]: Without dead ends: 137 [2020-09-24 22:43:23,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:43:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-24 22:43:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 81. [2020-09-24 22:43:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 22:43:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-09-24 22:43:23,739 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 41 [2020-09-24 22:43:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:23,742 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-09-24 22:43:23,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:43:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-09-24 22:43:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 22:43:23,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:23,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:23,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:43:23,751 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:23,752 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-09-24 22:43:23,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:23,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711173457] [2020-09-24 22:43:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:24,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:24,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:43:24,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:24,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-09-24 22:43:24,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:43:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:24,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:43:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:25,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:43:25,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:25,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711173457] [2020-09-24 22:43:25,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:25,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:43:25,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133661091] [2020-09-24 22:43:25,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:43:25,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:43:25,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:43:25,103 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 11 states. [2020-09-24 22:43:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:25,650 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-09-24 22:43:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:43:25,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-24 22:43:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:25,653 INFO L225 Difference]: With dead ends: 159 [2020-09-24 22:43:25,653 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 22:43:25,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:43:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 22:43:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 93. [2020-09-24 22:43:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 22:43:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-09-24 22:43:25,662 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2020-09-24 22:43:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:25,663 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-09-24 22:43:25,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:43:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-09-24 22:43:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:43:25,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:25,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:25,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:43:25,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2114514645, now seen corresponding path program 1 times [2020-09-24 22:43:25,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:25,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895685890] [2020-09-24 22:43:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:28,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:28,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:43:28,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:43:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2712 [2020-09-24 22:43:28,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:43:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:43:28,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:28,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:43:28,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:28,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895685890] [2020-09-24 22:43:28,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:28,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:43:28,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643550391] [2020-09-24 22:43:28,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:43:28,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:28,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:43:28,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:28,556 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 9 states. [2020-09-24 22:43:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:28,973 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-09-24 22:43:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:43:28,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-24 22:43:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:28,976 INFO L225 Difference]: With dead ends: 160 [2020-09-24 22:43:28,976 INFO L226 Difference]: Without dead ends: 145 [2020-09-24 22:43:28,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:43:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-24 22:43:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 100. [2020-09-24 22:43:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 22:43:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-09-24 22:43:28,985 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 47 [2020-09-24 22:43:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:28,986 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-09-24 22:43:28,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:43:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-09-24 22:43:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:43:28,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:28,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:28,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:43:28,988 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:28,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-09-24 22:43:28,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:28,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62917162] [2020-09-24 22:43:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:43:29,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-24 22:43:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:43:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:43:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:29,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:29,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:29,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:29,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:43:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:29,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62917162] [2020-09-24 22:43:29,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:29,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:43:29,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999104514] [2020-09-24 22:43:29,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:43:29,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:43:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:43:29,948 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 16 states. [2020-09-24 22:43:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:30,929 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-09-24 22:43:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:43:30,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-24 22:43:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:30,931 INFO L225 Difference]: With dead ends: 165 [2020-09-24 22:43:30,932 INFO L226 Difference]: Without dead ends: 159 [2020-09-24 22:43:30,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:43:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-24 22:43:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 104. [2020-09-24 22:43:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 22:43:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-09-24 22:43:30,940 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 47 [2020-09-24 22:43:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:30,941 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-09-24 22:43:30,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:43:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-09-24 22:43:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:43:30,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:30,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:30,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:43:30,943 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1893706375, now seen corresponding path program 1 times [2020-09-24 22:43:30,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:30,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353404458] [2020-09-24 22:43:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:31,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:43:31,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-24 22:43:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:43:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:43:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:31,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:31,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:31,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:43:31,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:31,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353404458] [2020-09-24 22:43:31,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:31,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:43:31,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739059267] [2020-09-24 22:43:31,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:43:31,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:31,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:43:31,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:43:31,821 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 16 states. [2020-09-24 22:43:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:33,186 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-09-24 22:43:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:43:33,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-24 22:43:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:33,190 INFO L225 Difference]: With dead ends: 179 [2020-09-24 22:43:33,190 INFO L226 Difference]: Without dead ends: 173 [2020-09-24 22:43:33,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:43:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-24 22:43:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 113. [2020-09-24 22:43:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 22:43:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-24 22:43:33,207 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 47 [2020-09-24 22:43:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:33,208 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-24 22:43:33,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:43:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-24 22:43:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:43:33,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:33,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:33,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:43:33,210 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -857024599, now seen corresponding path program 1 times [2020-09-24 22:43:33,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:33,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432759290] [2020-09-24 22:43:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:43:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-09-24 22:43:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:43:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:43:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:43:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:34,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:43:34,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:34,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432759290] [2020-09-24 22:43:34,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:43:34,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732531991] [2020-09-24 22:43:34,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:43:34,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:34,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:43:34,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:43:34,446 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 9 states. [2020-09-24 22:43:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:34,761 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2020-09-24 22:43:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:43:34,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-24 22:43:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:34,764 INFO L225 Difference]: With dead ends: 171 [2020-09-24 22:43:34,764 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 22:43:34,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:43:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 22:43:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 113. [2020-09-24 22:43:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 22:43:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-24 22:43:34,772 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 47 [2020-09-24 22:43:34,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:34,772 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-24 22:43:34,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:43:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-24 22:43:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:43:34,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:34,774 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:34,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:43:34,774 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash 294895633, now seen corresponding path program 2 times [2020-09-24 22:43:34,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:34,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308082114] [2020-09-24 22:43:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:43:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-09-24 22:43:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:43:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:43:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:36,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:36,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:43:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:36,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308082114] [2020-09-24 22:43:36,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:36,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:43:36,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501360585] [2020-09-24 22:43:36,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:43:36,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:36,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:43:36,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:43:36,694 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 18 states. [2020-09-24 22:43:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:38,031 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2020-09-24 22:43:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 22:43:38,036 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-09-24 22:43:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:38,038 INFO L225 Difference]: With dead ends: 207 [2020-09-24 22:43:38,038 INFO L226 Difference]: Without dead ends: 201 [2020-09-24 22:43:38,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 22:43:38,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-24 22:43:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 127. [2020-09-24 22:43:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-24 22:43:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2020-09-24 22:43:38,046 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 52 [2020-09-24 22:43:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:38,047 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2020-09-24 22:43:38,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:43:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2020-09-24 22:43:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:43:38,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:38,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:38,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:43:38,049 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1689189507, now seen corresponding path program 1 times [2020-09-24 22:43:38,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:38,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770769948] [2020-09-24 22:43:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:39,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:43:39,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:39,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-09-24 22:43:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:43:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:43:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:39,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:39,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:39,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:43:39,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:39,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770769948] [2020-09-24 22:43:39,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:39,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:43:39,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477488687] [2020-09-24 22:43:39,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:43:39,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:39,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:43:39,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:43:39,694 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand 18 states. [2020-09-24 22:43:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:40,967 INFO L93 Difference]: Finished difference Result 233 states and 248 transitions. [2020-09-24 22:43:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 22:43:40,967 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-09-24 22:43:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:40,969 INFO L225 Difference]: With dead ends: 233 [2020-09-24 22:43:40,969 INFO L226 Difference]: Without dead ends: 227 [2020-09-24 22:43:40,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 22:43:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-24 22:43:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 139. [2020-09-24 22:43:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-24 22:43:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2020-09-24 22:43:40,980 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 52 [2020-09-24 22:43:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:40,981 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2020-09-24 22:43:40,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:43:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2020-09-24 22:43:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:43:40,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:40,983 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:40,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 22:43:40,984 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash 219391251, now seen corresponding path program 1 times [2020-09-24 22:43:40,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:40,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690870753] [2020-09-24 22:43:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:41,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:41,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:43:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-24 22:43:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:43:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:43:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:41,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:41,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:41,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:41,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:43:41,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:41,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690870753] [2020-09-24 22:43:41,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:41,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:43:41,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66442556] [2020-09-24 22:43:41,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:43:41,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:41,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:43:41,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:43:41,827 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand 16 states. [2020-09-24 22:43:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:42,983 INFO L93 Difference]: Finished difference Result 205 states and 218 transitions. [2020-09-24 22:43:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:43:42,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 22:43:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:42,986 INFO L225 Difference]: With dead ends: 205 [2020-09-24 22:43:42,986 INFO L226 Difference]: Without dead ends: 190 [2020-09-24 22:43:42,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:43:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-24 22:43:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2020-09-24 22:43:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-24 22:43:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2020-09-24 22:43:42,994 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 53 [2020-09-24 22:43:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:42,994 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 151 transitions. [2020-09-24 22:43:42,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:43:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 151 transitions. [2020-09-24 22:43:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:43:42,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:42,995 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:42,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 22:43:42,996 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1256073027, now seen corresponding path program 2 times [2020-09-24 22:43:42,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:42,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23600072] [2020-09-24 22:43:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:43,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:43,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:43:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 22:43:43,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:43:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 22:43:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:43,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:43,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:43,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:43:43,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:43:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:43,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23600072] [2020-09-24 22:43:43,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:43,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:43:43,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879492501] [2020-09-24 22:43:43,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:43:43,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:43,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:43:43,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:43:43,803 INFO L87 Difference]: Start difference. First operand 141 states and 151 transitions. Second operand 16 states. [2020-09-24 22:43:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:44,845 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2020-09-24 22:43:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:43:44,846 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 22:43:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:44,847 INFO L225 Difference]: With dead ends: 187 [2020-09-24 22:43:44,847 INFO L226 Difference]: Without dead ends: 157 [2020-09-24 22:43:44,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 22:43:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-24 22:43:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 130. [2020-09-24 22:43:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-24 22:43:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2020-09-24 22:43:44,859 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 53 [2020-09-24 22:43:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:44,859 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2020-09-24 22:43:44,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:43:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2020-09-24 22:43:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:43:44,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:44,860 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:44,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 22:43:44,861 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash 164878513, now seen corresponding path program 2 times [2020-09-24 22:43:44,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:44,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967538393] [2020-09-24 22:43:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:45,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:43:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-24 22:43:45,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:43:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:43:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:45,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:45,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:43:45,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:45,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967538393] [2020-09-24 22:43:45,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:45,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:43:45,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977299695] [2020-09-24 22:43:45,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:43:45,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:43:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:43:45,649 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 16 states. [2020-09-24 22:43:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:46,798 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2020-09-24 22:43:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:43:46,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 22:43:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:46,799 INFO L225 Difference]: With dead ends: 169 [2020-09-24 22:43:46,800 INFO L226 Difference]: Without dead ends: 143 [2020-09-24 22:43:46,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 22:43:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-24 22:43:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 116. [2020-09-24 22:43:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-24 22:43:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-09-24 22:43:46,806 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 53 [2020-09-24 22:43:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:46,807 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-09-24 22:43:46,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:43:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-09-24 22:43:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:43:46,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:46,808 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:46,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 22:43:46,808 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:46,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1732440393, now seen corresponding path program 2 times [2020-09-24 22:43:46,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:46,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029518196] [2020-09-24 22:43:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:48,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:48,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:43:48,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:48,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1690 [2020-09-24 22:43:48,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:48,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:43:48,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:48,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 22:43:48,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:43:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:48,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029518196] [2020-09-24 22:43:48,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:48,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:43:48,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431737337] [2020-09-24 22:43:48,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:43:48,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:48,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:43:48,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:43:48,848 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 16 states. [2020-09-24 22:43:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:49,772 INFO L93 Difference]: Finished difference Result 194 states and 206 transitions. [2020-09-24 22:43:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 22:43:49,773 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 22:43:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:49,775 INFO L225 Difference]: With dead ends: 194 [2020-09-24 22:43:49,775 INFO L226 Difference]: Without dead ends: 179 [2020-09-24 22:43:49,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 22:43:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-24 22:43:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 134. [2020-09-24 22:43:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-24 22:43:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-09-24 22:43:49,782 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 58 [2020-09-24 22:43:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:49,782 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-09-24 22:43:49,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:43:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-09-24 22:43:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:43:49,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:49,783 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:49,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 22:43:49,784 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1525845127, now seen corresponding path program 3 times [2020-09-24 22:43:49,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:49,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041257956] [2020-09-24 22:43:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:49,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:50,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:50,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:43:50,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-09-24 22:43:50,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 22:43:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:43:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:43:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:51,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:51,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:51,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041257956] [2020-09-24 22:43:51,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:43:51,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 22:43:51,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930284759] [2020-09-24 22:43:51,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 22:43:51,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 22:43:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:43:51,595 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 22 states. [2020-09-24 22:43:52,285 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-09-24 22:43:52,999 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-24 22:43:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:53,991 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2020-09-24 22:43:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 22:43:53,992 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-09-24 22:43:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:53,994 INFO L225 Difference]: With dead ends: 207 [2020-09-24 22:43:53,994 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 22:43:53,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=372, Invalid=2078, Unknown=0, NotChecked=0, Total=2450 [2020-09-24 22:43:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 22:43:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 140. [2020-09-24 22:43:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-24 22:43:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2020-09-24 22:43:54,003 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 58 [2020-09-24 22:43:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:54,003 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2020-09-24 22:43:54,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 22:43:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2020-09-24 22:43:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:43:54,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:54,004 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:54,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 22:43:54,005 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1049071675, now seen corresponding path program 1 times [2020-09-24 22:43:54,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:54,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80273949] [2020-09-24 22:43:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:43:54,025 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:43:54,025 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:43:54,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 22:43:54,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:43:54 BoogieIcfgContainer [2020-09-24 22:43:54,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:43:54,055 INFO L168 Benchmark]: Toolchain (without parser) took 36820.59 ms. Allocated memory was 135.8 MB in the beginning and 474.0 MB in the end (delta: 338.2 MB). Free memory was 97.7 MB in the beginning and 201.6 MB in the end (delta: -103.8 MB). Peak memory consumption was 234.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:43:54,056 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:43:54,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.74 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 97.0 MB in the beginning and 168.2 MB in the end (delta: -71.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:43:54,057 INFO L168 Benchmark]: Boogie Preprocessor took 85.98 ms. Allocated memory is still 202.4 MB. Free memory was 168.2 MB in the beginning and 165.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:43:54,058 INFO L168 Benchmark]: RCFGBuilder took 695.31 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 116.7 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:43:54,059 INFO L168 Benchmark]: TraceAbstraction took 35256.52 ms. Allocated memory was 202.4 MB in the beginning and 474.0 MB in the end (delta: 271.6 MB). Free memory was 116.0 MB in the beginning and 201.6 MB in the end (delta: -85.5 MB). Peak memory consumption was 186.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:43:54,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.74 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 97.0 MB in the beginning and 168.2 MB in the end (delta: -71.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.98 ms. Allocated memory is still 202.4 MB. Free memory was 168.2 MB in the beginning and 165.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 695.31 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 116.7 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35256.52 ms. Allocated memory was 202.4 MB in the beginning and 474.0 MB in the end (delta: 271.6 MB). Free memory was 116.0 MB in the beginning and 201.6 MB in the end (delta: -85.5 MB). Peak memory consumption was 186.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) [L528] COND FALSE !(t == 0) [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] EXPR p->h [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.1s, OverallIterations: 18, TraceHistogramMax: 3, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1000 SDtfs, 3501 SDslu, 6941 SDs, 0 SdLazy, 5954 SolverSat, 542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 825 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 831 NumberOfCodeBlocks, 831 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 332968 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 28/107 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...