/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:21,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:21,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:21,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:21,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:21,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:21,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:21,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:21,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:21,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:21,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:21,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:21,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:21,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:21,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:21,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:21,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:21,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:21,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:21,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:21,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:21,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:21,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:21,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:21,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:21,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:21,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:21,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:21,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:21,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:21,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:21,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:21,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:21,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:21,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:21,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:21,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:21,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:21,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:21,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:21,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:21,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:21:22,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:22,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:22,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:22,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:22,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:22,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:22,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:22,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:22,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:22,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:22,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:22,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:22,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:22,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:22,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:22,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:22,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:22,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:22,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:22,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:22,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:22,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:22,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:22,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:22,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:22,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:22,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:22,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:22,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:22,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:21:22,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:22,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:22,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:22,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:22,310 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:22,311 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-10-13 10:21:22,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3e729b0/bf3d9960afa14f96be428f8ece22a3f9/FLAGf1139612e [2020-10-13 10:21:22,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:22,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-10-13 10:21:22,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3e729b0/bf3d9960afa14f96be428f8ece22a3f9/FLAGf1139612e [2020-10-13 10:21:23,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd3e729b0/bf3d9960afa14f96be428f8ece22a3f9 [2020-10-13 10:21:23,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:23,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:23,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:23,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:23,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:23,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7701fc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23, skipping insertion in model container [2020-10-13 10:21:23,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:23,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:23,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:23,813 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:23,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:23,913 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:23,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23 WrapperNode [2020-10-13 10:21:23,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:23,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:23,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:23,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:23,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... [2020-10-13 10:21:23,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:23,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:23,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:23,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:23,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:24,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:24,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:24,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:24,774 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:24,774 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-13 10:21:24,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:24 BoogieIcfgContainer [2020-10-13 10:21:24,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:24,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:24,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:24,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:24,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:23" (1/3) ... [2020-10-13 10:21:24,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f17d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:24, skipping insertion in model container [2020-10-13 10:21:24,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:23" (2/3) ... [2020-10-13 10:21:24,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f17d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:24, skipping insertion in model container [2020-10-13 10:21:24,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:24" (3/3) ... [2020-10-13 10:21:24,788 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-10-13 10:21:24,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:24,806 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-10-13 10:21:24,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-10-13 10:21:24,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:24,844 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:24,844 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:24,844 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:24,845 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:24,845 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:24,845 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:24,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-13 10:21:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-13 10:21:24,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:24,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:24,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-10-13 10:21:24,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:24,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963789261] [2020-10-13 10:21:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:21:25,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 10:21:25,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:21:25,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963789261] [2020-10-13 10:21:25,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:25,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:25,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810083033] [2020-10-13 10:21:25,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:25,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:25,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:25,293 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-10-13 10:21:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,514 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-10-13 10:21:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:25,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-13 10:21:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,528 INFO L225 Difference]: With dead ends: 188 [2020-10-13 10:21:25,528 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:21:25,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:21:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-13 10:21:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:21:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-10-13 10:21:25,581 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-10-13 10:21:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,582 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-10-13 10:21:25,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-10-13 10:21:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:25,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:25,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:25,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-10-13 10:21:25,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810849248] [2020-10-13 10:21:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:25,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:21:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:21:25,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810849248] [2020-10-13 10:21:25,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:25,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:25,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388585879] [2020-10-13 10:21:25,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:25,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:25,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:25,850 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-10-13 10:21:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,023 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-10-13 10:21:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:26,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 10:21:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,026 INFO L225 Difference]: With dead ends: 85 [2020-10-13 10:21:26,026 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 10:21:26,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 10:21:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-13 10:21:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 10:21:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-10-13 10:21:26,038 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-10-13 10:21:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,038 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-10-13 10:21:26,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-10-13 10:21:26,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:26,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:26,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:26,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-10-13 10:21:26,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76823853] [2020-10-13 10:21:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:26,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 10:21:26,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:21:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:26,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76823853] [2020-10-13 10:21:26,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:26,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:26,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198645163] [2020-10-13 10:21:26,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:26,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:26,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:26,165 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-10-13 10:21:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,353 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-13 10:21:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:26,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-13 10:21:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,369 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:21:26,369 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 10:21:26,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 10:21:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-13 10:21:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:21:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-10-13 10:21:26,377 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-10-13 10:21:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,378 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-10-13 10:21:26,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-10-13 10:21:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:21:26,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:26,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:26,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-10-13 10:21:26,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394058794] [2020-10-13 10:21:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:21:26,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 10:21:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394058794] [2020-10-13 10:21:26,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:26,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:26,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012616139] [2020-10-13 10:21:26,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:26,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:26,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:26,648 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-10-13 10:21:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,789 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-10-13 10:21:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:26,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:21:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,791 INFO L225 Difference]: With dead ends: 83 [2020-10-13 10:21:26,791 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 10:21:26,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 10:21:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-13 10:21:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:21:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-10-13 10:21:26,799 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-10-13 10:21:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,799 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-10-13 10:21:26,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-10-13 10:21:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:26,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:26,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:26,801 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-10-13 10:21:26,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875954199] [2020-10-13 10:21:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-13 10:21:27,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:27,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875954199] [2020-10-13 10:21:27,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:27,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:27,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927388950] [2020-10-13 10:21:27,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:27,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:27,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:27,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:27,122 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 5 states. [2020-10-13 10:21:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:27,353 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2020-10-13 10:21:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:27,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 10:21:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:27,355 INFO L225 Difference]: With dead ends: 194 [2020-10-13 10:21:27,359 INFO L226 Difference]: Without dead ends: 130 [2020-10-13 10:21:27,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:27,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-13 10:21:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-10-13 10:21:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 10:21:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-10-13 10:21:27,379 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 20 [2020-10-13 10:21:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:27,380 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-10-13 10:21:27,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-10-13 10:21:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:27,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:27,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:27,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:27,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:27,384 INFO L82 PathProgramCache]: Analyzing trace with hash 203604783, now seen corresponding path program 1 times [2020-10-13 10:21:27,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:27,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552813923] [2020-10-13 10:21:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:27,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 10:21:27,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:27,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:27,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:27,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552813923] [2020-10-13 10:21:27,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:27,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:27,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875680006] [2020-10-13 10:21:27,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:27,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:27,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:27,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:27,544 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 5 states. [2020-10-13 10:21:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:27,761 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2020-10-13 10:21:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:27,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 10:21:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:27,765 INFO L225 Difference]: With dead ends: 96 [2020-10-13 10:21:27,765 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 10:21:27,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 10:21:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 10:21:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-13 10:21:27,786 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-10-13 10:21:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:27,787 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-13 10:21:27,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-13 10:21:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:27,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:27,788 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] [2020-10-13 10:21:27,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:27,792 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -249563430, now seen corresponding path program 1 times [2020-10-13 10:21:27,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:27,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179039349] [2020-10-13 10:21:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 10:21:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:21:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:27,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:27,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:27,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179039349] [2020-10-13 10:21:27,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:27,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:27,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664224836] [2020-10-13 10:21:27,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:27,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:27,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:27,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:27,900 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-10-13 10:21:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:28,028 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-13 10:21:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:28,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:21:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:28,032 INFO L225 Difference]: With dead ends: 99 [2020-10-13 10:21:28,032 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 10:21:28,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 10:21:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2020-10-13 10:21:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:21:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-10-13 10:21:28,048 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 24 [2020-10-13 10:21:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:28,049 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-10-13 10:21:28,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-10-13 10:21:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:21:28,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:28,050 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] [2020-10-13 10:21:28,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:28,050 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash 853457808, now seen corresponding path program 1 times [2020-10-13 10:21:28,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:28,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069703713] [2020-10-13 10:21:28,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:21:28,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-13 10:21:28,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:21:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:28,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:28,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:28,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069703713] [2020-10-13 10:21:28,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:28,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:28,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941612037] [2020-10-13 10:21:28,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:28,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:28,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:28,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:28,424 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 4 states. [2020-10-13 10:21:28,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:28,574 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-13 10:21:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:28,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 10:21:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:28,575 INFO L225 Difference]: With dead ends: 77 [2020-10-13 10:21:28,575 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:21:28,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:21:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 10:21:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-13 10:21:28,586 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 25 [2020-10-13 10:21:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:28,587 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-13 10:21:28,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-13 10:21:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:28,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:28,590 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] [2020-10-13 10:21:28,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:28,591 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:28,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-10-13 10:21:28,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:28,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786004211] [2020-10-13 10:21:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:28,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 10:21:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 10:21:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:28,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786004211] [2020-10-13 10:21:28,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:28,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:28,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739965511] [2020-10-13 10:21:28,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:28,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:28,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:28,752 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 5 states. [2020-10-13 10:21:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:28,897 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2020-10-13 10:21:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:28,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-13 10:21:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:28,900 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:21:28,900 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 10:21:28,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 10:21:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 10:21:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 10:21:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-13 10:21:28,917 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 27 [2020-10-13 10:21:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:28,917 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-13 10:21:28,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-13 10:21:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:28,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:28,918 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] [2020-10-13 10:21:28,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:28,919 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:28,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:28,919 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-10-13 10:21:28,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:28,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872726234] [2020-10-13 10:21:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:21:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 10:21:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:29,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:29,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872726234] [2020-10-13 10:21:29,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:29,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:21:29,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335062500] [2020-10-13 10:21:29,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:29,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:29,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:29,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:29,229 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 7 states. [2020-10-13 10:21:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:29,587 INFO L93 Difference]: Finished difference Result 174 states and 201 transitions. [2020-10-13 10:21:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:29,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-13 10:21:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:29,589 INFO L225 Difference]: With dead ends: 174 [2020-10-13 10:21:29,589 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 10:21:29,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 10:21:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 83. [2020-10-13 10:21:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 10:21:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-10-13 10:21:29,599 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 28 [2020-10-13 10:21:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:29,599 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-10-13 10:21:29,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-10-13 10:21:29,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:29,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:29,602 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] [2020-10-13 10:21:29,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:29,602 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:29,603 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-10-13 10:21:29,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:29,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287160898] [2020-10-13 10:21:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:30,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:21:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-13 10:21:30,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:21:30,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:30,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:30,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287160898] [2020-10-13 10:21:30,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:30,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:21:30,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883229506] [2020-10-13 10:21:30,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:30,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:30,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:30,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:30,652 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 8 states. [2020-10-13 10:21:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,190 INFO L93 Difference]: Finished difference Result 168 states and 194 transitions. [2020-10-13 10:21:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:31,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-13 10:21:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,192 INFO L225 Difference]: With dead ends: 168 [2020-10-13 10:21:31,193 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 10:21:31,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 10:21:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 102. [2020-10-13 10:21:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:21:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2020-10-13 10:21:31,202 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 28 [2020-10-13 10:21:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,203 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2020-10-13 10:21:31,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2020-10-13 10:21:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:31,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:31,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:31,205 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-10-13 10:21:31,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820272893] [2020-10-13 10:21:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:21:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-13 10:21:32,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:32,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:32,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:32,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:32,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820272893] [2020-10-13 10:21:32,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:32,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:21:32,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428683523] [2020-10-13 10:21:32,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:32,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:32,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:32,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:32,171 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 9 states. [2020-10-13 10:21:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:32,799 INFO L93 Difference]: Finished difference Result 251 states and 288 transitions. [2020-10-13 10:21:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:32,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-13 10:21:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:32,802 INFO L225 Difference]: With dead ends: 251 [2020-10-13 10:21:32,802 INFO L226 Difference]: Without dead ends: 249 [2020-10-13 10:21:32,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-13 10:21:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 110. [2020-10-13 10:21:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:21:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-10-13 10:21:32,812 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 31 [2020-10-13 10:21:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:32,812 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-10-13 10:21:32,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-10-13 10:21:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:32,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:32,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:32,814 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:32,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2127974144, now seen corresponding path program 1 times [2020-10-13 10:21:32,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:32,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227825192] [2020-10-13 10:21:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:33,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:21:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-13 10:21:33,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:33,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:33,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227825192] [2020-10-13 10:21:33,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:33,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:33,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677250026] [2020-10-13 10:21:33,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:33,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:33,332 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 7 states. [2020-10-13 10:21:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:33,695 INFO L93 Difference]: Finished difference Result 246 states and 287 transitions. [2020-10-13 10:21:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:33,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-13 10:21:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:33,697 INFO L225 Difference]: With dead ends: 246 [2020-10-13 10:21:33,697 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 10:21:33,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 10:21:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 146. [2020-10-13 10:21:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 10:21:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2020-10-13 10:21:33,717 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 33 [2020-10-13 10:21:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:33,718 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2020-10-13 10:21:33,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2020-10-13 10:21:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:33,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:33,723 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:33,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:33,723 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:33,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-10-13 10:21:33,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:33,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592038529] [2020-10-13 10:21:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:33,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 10:21:33,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:33,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592038529] [2020-10-13 10:21:33,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:33,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:21:33,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589664305] [2020-10-13 10:21:33,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:33,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:33,893 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand 6 states. [2020-10-13 10:21:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:34,209 INFO L93 Difference]: Finished difference Result 258 states and 310 transitions. [2020-10-13 10:21:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:34,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 10:21:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:34,211 INFO L225 Difference]: With dead ends: 258 [2020-10-13 10:21:34,211 INFO L226 Difference]: Without dead ends: 198 [2020-10-13 10:21:34,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-13 10:21:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 173. [2020-10-13 10:21:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-13 10:21:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 211 transitions. [2020-10-13 10:21:34,230 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 211 transitions. Word has length 33 [2020-10-13 10:21:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:34,230 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 211 transitions. [2020-10-13 10:21:34,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 211 transitions. [2020-10-13 10:21:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:34,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:34,232 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] [2020-10-13 10:21:34,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:34,232 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-10-13 10:21:34,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:34,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469973626] [2020-10-13 10:21:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:34,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 10:21:34,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:34,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:34,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469973626] [2020-10-13 10:21:34,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:34,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:34,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423791800] [2020-10-13 10:21:34,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:34,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:34,605 INFO L87 Difference]: Start difference. First operand 173 states and 211 transitions. Second operand 7 states. [2020-10-13 10:21:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:34,998 INFO L93 Difference]: Finished difference Result 287 states and 341 transitions. [2020-10-13 10:21:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:34,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-13 10:21:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:35,001 INFO L225 Difference]: With dead ends: 287 [2020-10-13 10:21:35,001 INFO L226 Difference]: Without dead ends: 256 [2020-10-13 10:21:35,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-13 10:21:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 193. [2020-10-13 10:21:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-13 10:21:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 236 transitions. [2020-10-13 10:21:35,018 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 236 transitions. Word has length 36 [2020-10-13 10:21:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:35,019 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 236 transitions. [2020-10-13 10:21:35,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 236 transitions. [2020-10-13 10:21:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:35,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:35,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:35,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:35,021 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:35,022 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-10-13 10:21:35,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:35,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610763804] [2020-10-13 10:21:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:35,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:35,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 10:21:35,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 10:21:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:35,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610763804] [2020-10-13 10:21:35,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:35,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:35,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402518068] [2020-10-13 10:21:35,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:35,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:35,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:35,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:35,127 INFO L87 Difference]: Start difference. First operand 193 states and 236 transitions. Second operand 4 states. [2020-10-13 10:21:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:35,262 INFO L93 Difference]: Finished difference Result 270 states and 338 transitions. [2020-10-13 10:21:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:35,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 10:21:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:35,264 INFO L225 Difference]: With dead ends: 270 [2020-10-13 10:21:35,264 INFO L226 Difference]: Without dead ends: 268 [2020-10-13 10:21:35,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-13 10:21:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 255. [2020-10-13 10:21:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-13 10:21:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 315 transitions. [2020-10-13 10:21:35,282 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 315 transitions. Word has length 36 [2020-10-13 10:21:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:35,282 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 315 transitions. [2020-10-13 10:21:35,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 315 transitions. [2020-10-13 10:21:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:35,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:35,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:35,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:35,284 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1632051366, now seen corresponding path program 1 times [2020-10-13 10:21:35,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:35,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186558789] [2020-10-13 10:21:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:35,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:21:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:21:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:35,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:35,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186558789] [2020-10-13 10:21:35,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:35,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:35,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933705263] [2020-10-13 10:21:35,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:35,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:35,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:35,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:35,358 INFO L87 Difference]: Start difference. First operand 255 states and 315 transitions. Second operand 4 states. [2020-10-13 10:21:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:35,508 INFO L93 Difference]: Finished difference Result 454 states and 571 transitions. [2020-10-13 10:21:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:35,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 10:21:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:35,511 INFO L225 Difference]: With dead ends: 454 [2020-10-13 10:21:35,511 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 10:21:35,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 10:21:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 253. [2020-10-13 10:21:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-13 10:21:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 314 transitions. [2020-10-13 10:21:35,530 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 314 transitions. Word has length 36 [2020-10-13 10:21:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:35,530 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 314 transitions. [2020-10-13 10:21:35,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:35,531 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 314 transitions. [2020-10-13 10:21:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:35,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:35,531 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] [2020-10-13 10:21:35,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:35,532 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:35,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-10-13 10:21:35,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:35,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441626328] [2020-10-13 10:21:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:40,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 10:21:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 10:21:40,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:21:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:40,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:40,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441626328] [2020-10-13 10:21:40,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:40,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:40,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334625107] [2020-10-13 10:21:40,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:40,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:40,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:40,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:40,602 INFO L87 Difference]: Start difference. First operand 253 states and 314 transitions. Second operand 6 states. [2020-10-13 10:21:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:40,830 INFO L93 Difference]: Finished difference Result 405 states and 506 transitions. [2020-10-13 10:21:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:40,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 10:21:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:40,832 INFO L225 Difference]: With dead ends: 405 [2020-10-13 10:21:40,832 INFO L226 Difference]: Without dead ends: 262 [2020-10-13 10:21:40,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-13 10:21:40,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 255. [2020-10-13 10:21:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-13 10:21:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 316 transitions. [2020-10-13 10:21:40,850 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 316 transitions. Word has length 40 [2020-10-13 10:21:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:40,850 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 316 transitions. [2020-10-13 10:21:40,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 316 transitions. [2020-10-13 10:21:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:40,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:40,851 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] [2020-10-13 10:21:40,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:40,852 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:40,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-10-13 10:21:40,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:40,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782982477] [2020-10-13 10:21:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:43,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:43,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 10:21:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2412 [2020-10-13 10:21:43,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:43,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:21:43,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:43,606 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-13 10:21:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:43,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:43,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:43,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:43,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782982477] [2020-10-13 10:21:43,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:43,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:43,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851615471] [2020-10-13 10:21:43,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:43,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:43,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:43,771 INFO L87 Difference]: Start difference. First operand 255 states and 316 transitions. Second operand 12 states. [2020-10-13 10:21:45,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:45,378 INFO L93 Difference]: Finished difference Result 599 states and 743 transitions. [2020-10-13 10:21:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:21:45,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-13 10:21:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:45,382 INFO L225 Difference]: With dead ends: 599 [2020-10-13 10:21:45,382 INFO L226 Difference]: Without dead ends: 597 [2020-10-13 10:21:45,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:21:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-13 10:21:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 298. [2020-10-13 10:21:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-13 10:21:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 370 transitions. [2020-10-13 10:21:45,405 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 370 transitions. Word has length 40 [2020-10-13 10:21:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:45,405 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 370 transitions. [2020-10-13 10:21:45,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 370 transitions. [2020-10-13 10:21:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:45,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:45,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:45,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:45,408 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1659756179, now seen corresponding path program 1 times [2020-10-13 10:21:45,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:45,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800046236] [2020-10-13 10:21:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:45,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 10:21:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 10:21:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:45,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:45,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:45,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:45,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800046236] [2020-10-13 10:21:45,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:45,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:45,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801256003] [2020-10-13 10:21:45,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:45,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:45,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:45,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:45,499 INFO L87 Difference]: Start difference. First operand 298 states and 370 transitions. Second operand 4 states. [2020-10-13 10:21:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:45,620 INFO L93 Difference]: Finished difference Result 502 states and 631 transitions. [2020-10-13 10:21:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:45,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 10:21:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:45,623 INFO L225 Difference]: With dead ends: 502 [2020-10-13 10:21:45,623 INFO L226 Difference]: Without dead ends: 307 [2020-10-13 10:21:45,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-13 10:21:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 281. [2020-10-13 10:21:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 10:21:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 343 transitions. [2020-10-13 10:21:45,642 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 343 transitions. Word has length 40 [2020-10-13 10:21:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:45,643 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 343 transitions. [2020-10-13 10:21:45,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 343 transitions. [2020-10-13 10:21:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:45,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:45,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:45,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:45,644 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-10-13 10:21:45,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:45,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488895612] [2020-10-13 10:21:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:21:45,655 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:21:45,655 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:21:45,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:45,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:21:45 BoogieIcfgContainer [2020-10-13 10:21:45,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:21:45,680 INFO L168 Benchmark]: Toolchain (without parser) took 22418.88 ms. Allocated memory was 148.4 MB in the beginning and 507.0 MB in the end (delta: 358.6 MB). Free memory was 101.7 MB in the beginning and 139.1 MB in the end (delta: -37.5 MB). Peak memory consumption was 321.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:45,680 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:21:45,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.45 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 171.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:45,682 INFO L168 Benchmark]: Boogie Preprocessor took 81.42 ms. Allocated memory is still 205.0 MB. Free memory was 171.5 MB in the beginning and 168.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:45,682 INFO L168 Benchmark]: RCFGBuilder took 783.26 ms. Allocated memory is still 205.0 MB. Free memory was 168.3 MB in the beginning and 112.6 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:45,683 INFO L168 Benchmark]: TraceAbstraction took 20897.85 ms. Allocated memory was 205.0 MB in the beginning and 507.0 MB in the end (delta: 302.0 MB). Free memory was 111.9 MB in the beginning and 139.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 274.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:21:45,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.45 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 171.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.42 ms. Allocated memory is still 205.0 MB. Free memory was 171.5 MB in the beginning and 168.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 783.26 ms. Allocated memory is still 205.0 MB. Free memory was 168.3 MB in the beginning and 112.6 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20897.85 ms. Allocated memory was 205.0 MB in the beginning and 507.0 MB in the end (delta: 302.0 MB). Free memory was 111.9 MB in the beginning and 139.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 274.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.8s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1558 SDtfs, 1772 SDslu, 2955 SDs, 0 SdLazy, 3435 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 870 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 532 ConstructedInterpolants, 0 QuantifiedInterpolants, 142666 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 12/18 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...