/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-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:24:22,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:24:22,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:24:22,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:24:22,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:24:22,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:24:22,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:24:22,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:24:22,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:24:22,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:24:22,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:24:22,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:24:22,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:24:22,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:24:22,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:24:22,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:24:22,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:24:22,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:24:22,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:24:22,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:24:22,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:24:22,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:24:22,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:24:22,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:24:22,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:24:22,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:24:22,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:24:22,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:24:22,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:24:22,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:24:22,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:24:22,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:24:22,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:24:22,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:24:22,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:24:22,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:24:22,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:24:22,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:24:22,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:24:22,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:24:22,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:24:22,660 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 10:24:22,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:24:22,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:24:22,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:24:22,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:24:22,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:24:22,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:24:22,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:24:22,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:24:22,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:24:22,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:24:22,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:24:22,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:24:22,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:24:22,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:24:22,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:24:22,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:24:22,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:24:22,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:24:22,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:24:22,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:24:22,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:24:22,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:24:22,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:24:22,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:24:22,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:24:22,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:24:22,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:24:22,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:24:22,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:24:22,709 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 10:24:22,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:24:23,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:24:23,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:24:23,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:24:23,010 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:24:23,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-13 10:24:23,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1866f0a6/a70afebdf95c42baba5f661ee45a6636/FLAGb4e2a834b [2020-10-13 10:24:23,669 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:24:23,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-13 10:24:23,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1866f0a6/a70afebdf95c42baba5f661ee45a6636/FLAGb4e2a834b [2020-10-13 10:24:23,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1866f0a6/a70afebdf95c42baba5f661ee45a6636 [2020-10-13 10:24:23,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:24:23,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:24:23,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:24:23,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:24:23,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:24:23,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:24:23" (1/1) ... [2020-10-13 10:24:23,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:23, skipping insertion in model container [2020-10-13 10:24:23,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:24:23" (1/1) ... [2020-10-13 10:24:23,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:24:24,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:24:24,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:24:24,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:24:24,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:24:24,581 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:24:24,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24 WrapperNode [2020-10-13 10:24:24,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:24:24,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:24:24,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:24:24,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:24:24,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (1/1) ... [2020-10-13 10:24:24,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:24:24,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:24:24,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:24:24,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:24:24,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (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 10:24:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:24:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:24:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:24:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:24:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:24:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:24:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:24:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:24:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:24:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:24:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:24:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:24:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:24:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:24:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:24:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:24:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:24:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:24:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:24:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:24:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:24:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:24:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:24:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:24:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:24:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:24:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:24:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:24:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:24:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:24:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:24:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:24:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:24:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:24:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:24:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:24:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:24:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:24:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:24:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:24:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:24:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:24:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:24:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:24:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:24:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:24:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:24:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:24:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:24:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:24:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:24:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:24:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:24:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:24:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:24:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:24:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:24:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:24:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:24:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:24:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:24:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:24:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:24:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:24:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:24:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:24:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:24:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:24:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:24:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:24:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:24:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:24:25,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:24:25,330 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-13 10:24:25,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:24:25 BoogieIcfgContainer [2020-10-13 10:24:25,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:24:25,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:24:25,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:24:25,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:24:25,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:24:23" (1/3) ... [2020-10-13 10:24:25,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655b36f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:24:25, skipping insertion in model container [2020-10-13 10:24:25,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:24" (2/3) ... [2020-10-13 10:24:25,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655b36f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:24:25, skipping insertion in model container [2020-10-13 10:24:25,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:24:25" (3/3) ... [2020-10-13 10:24:25,344 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2020-10-13 10:24:25,356 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:24:25,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-13 10:24:25,380 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-13 10:24:25,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:24:25,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:24:25,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:24:25,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:24:25,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:24:25,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:24:25,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:24:25,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:24:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-13 10:24:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:24:25,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:25,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:25,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1780468538, now seen corresponding path program 1 times [2020-10-13 10:24:25,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:25,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939241019] [2020-10-13 10:24:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:25,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:25,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:25,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:24:25,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 10:24:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:24:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:24:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:24:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:26,084 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 10:24:26,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939241019] [2020-10-13 10:24:26,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:24:26,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:24:26,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999825706] [2020-10-13 10:24:26,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:24:26,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:26,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:24:26,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:24:26,110 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-10-13 10:24:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,288 INFO L93 Difference]: Finished difference Result 112 states and 178 transitions. [2020-10-13 10:24:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:24:26,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:24:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,303 INFO L225 Difference]: With dead ends: 112 [2020-10-13 10:24:26,303 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:24:26,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:24:26,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:24:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-13 10:24:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:24:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-13 10:24:26,353 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2020-10-13 10:24:26,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,353 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-13 10:24:26,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:24:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-13 10:24:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:24:26,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:26,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:24:26,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,356 INFO L82 PathProgramCache]: Analyzing trace with hash -658139069, now seen corresponding path program 1 times [2020-10-13 10:24:26,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047780250] [2020-10-13 10:24:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:24:26,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 10:24:26,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:24:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:24:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:24:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:26,480 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 10:24:26,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047780250] [2020-10-13 10:24:26,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:24:26,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:24:26,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412606812] [2020-10-13 10:24:26,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:24:26,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:26,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:24:26,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:24:26,484 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2020-10-13 10:24:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,624 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2020-10-13 10:24:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:24:26,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-13 10:24:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,626 INFO L225 Difference]: With dead ends: 107 [2020-10-13 10:24:26,626 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 10:24:26,628 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 10:24:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 10:24:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-13 10:24:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 10:24:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-13 10:24:26,638 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-10-13 10:24:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,638 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-13 10:24:26,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:24:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-13 10:24:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 10:24:26,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,639 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:26,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:24:26,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1481014552, now seen corresponding path program 1 times [2020-10-13 10:24:26,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062251042] [2020-10-13 10:24:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:24:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 10:24:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:24:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:24:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:26,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:26,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:24:26,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:26,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:24:26,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062251042] [2020-10-13 10:24:26,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:24:26,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:24:26,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750083455] [2020-10-13 10:24:26,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:24:26,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:26,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:24:26,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:24:26,870 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-13 10:24:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:27,048 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-10-13 10:24:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:24:27,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-13 10:24:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:27,050 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:24:27,051 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 10:24:27,051 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 10:24:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 10:24:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2020-10-13 10:24:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 10:24:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-13 10:24:27,062 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2020-10-13 10:24:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:27,062 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-13 10:24:27,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:24:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-13 10:24:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:24:27,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:27,064 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] [2020-10-13 10:24:27,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:24:27,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:27,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1774425742, now seen corresponding path program 1 times [2020-10-13 10:24:27,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:27,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547820333] [2020-10-13 10:24:27,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:27,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:24:27,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 10:24:27,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:24:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:24:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:27,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:24:27,580 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 10:24:27,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547820333] [2020-10-13 10:24:27,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:27,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:24:27,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340900110] [2020-10-13 10:24:27,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:24:27,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:27,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:24:27,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:24:27,584 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-10-13 10:24:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:28,072 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2020-10-13 10:24:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:24:28,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-13 10:24:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:28,074 INFO L225 Difference]: With dead ends: 102 [2020-10-13 10:24:28,074 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:24:28,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:24:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:24:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2020-10-13 10:24:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:24:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-10-13 10:24:28,092 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 25 [2020-10-13 10:24:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:28,093 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-10-13 10:24:28,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:24:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-10-13 10:24:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:24:28,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:28,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:28,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:24:28,098 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:28,098 INFO L82 PathProgramCache]: Analyzing trace with hash -783280294, now seen corresponding path program 1 times [2020-10-13 10:24:28,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:28,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977210410] [2020-10-13 10:24:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:28,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:24:28,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:28,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-13 10:24:28,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:24:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:28,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:24:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:29,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977210410] [2020-10-13 10:24:29,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:29,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:24:29,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776390436] [2020-10-13 10:24:29,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:24:29,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:24:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:24:29,140 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 8 states. [2020-10-13 10:24:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:29,463 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-10-13 10:24:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:24:29,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-13 10:24:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:29,465 INFO L225 Difference]: With dead ends: 126 [2020-10-13 10:24:29,465 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 10:24:29,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 10:24:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2020-10-13 10:24:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:24:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-13 10:24:29,475 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 28 [2020-10-13 10:24:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:29,475 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-13 10:24:29,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:24:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-13 10:24:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:24:29,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:29,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:29,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:24:29,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -538281373, now seen corresponding path program 1 times [2020-10-13 10:24:29,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:29,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294628985] [2020-10-13 10:24:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:29,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:29,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:24:29,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 10:24:29,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:24:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:24:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:29,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:29,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:29,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:29,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:29,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:29,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:29,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:29,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294628985] [2020-10-13 10:24:29,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:29,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:24:29,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794714918] [2020-10-13 10:24:29,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:24:29,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:29,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:24:29,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:24:29,996 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 10 states. [2020-10-13 10:24:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:30,500 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2020-10-13 10:24:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:24:30,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-13 10:24:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:30,502 INFO L225 Difference]: With dead ends: 172 [2020-10-13 10:24:30,502 INFO L226 Difference]: Without dead ends: 137 [2020-10-13 10:24:30,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-13 10:24:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 89. [2020-10-13 10:24:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:24:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-13 10:24:30,523 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 29 [2020-10-13 10:24:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:30,524 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-13 10:24:30,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:24:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-13 10:24:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:24:30,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:30,528 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:30,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:24:30,529 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1347627999, now seen corresponding path program 1 times [2020-10-13 10:24:30,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:30,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875482426] [2020-10-13 10:24:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:24:31,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:24:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-13 10:24:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:24:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:24:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:24:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:31,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:31,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:24:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 10:24:31,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875482426] [2020-10-13 10:24:31,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:24:31,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:24:31,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693698800] [2020-10-13 10:24:31,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:24:31,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:24:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:24:31,561 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 6 states. [2020-10-13 10:24:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:31,718 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2020-10-13 10:24:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:24:31,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-13 10:24:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:31,721 INFO L225 Difference]: With dead ends: 137 [2020-10-13 10:24:31,722 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:24:31,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:24:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:24:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2020-10-13 10:24:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 10:24:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2020-10-13 10:24:31,731 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 29 [2020-10-13 10:24:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:31,732 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2020-10-13 10:24:31,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:24:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2020-10-13 10:24:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:24:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:31,733 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:31,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:24:31,734 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1731682651, now seen corresponding path program 1 times [2020-10-13 10:24:31,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:31,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814176936] [2020-10-13 10:24:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:24:31,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-13 10:24:31,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:24:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:32,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:32,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:32,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:32,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:32,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:32,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:32,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:24:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:32,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814176936] [2020-10-13 10:24:32,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:32,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:24:32,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932043213] [2020-10-13 10:24:32,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:24:32,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:32,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:24:32,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:32,173 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand 11 states. [2020-10-13 10:24:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:32,799 INFO L93 Difference]: Finished difference Result 176 states and 215 transitions. [2020-10-13 10:24:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:24:32,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-13 10:24:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:32,802 INFO L225 Difference]: With dead ends: 176 [2020-10-13 10:24:32,802 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 10:24:32,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 10:24:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 103. [2020-10-13 10:24:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 10:24:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2020-10-13 10:24:32,816 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 29 [2020-10-13 10:24:32,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:32,817 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2020-10-13 10:24:32,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:24:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2020-10-13 10:24:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:24:32,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:32,823 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] [2020-10-13 10:24:32,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:24:32,823 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:32,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:32,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1755426375, now seen corresponding path program 1 times [2020-10-13 10:24:32,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:32,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620143252] [2020-10-13 10:24:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:24:33,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 10:24:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:24:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:24:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:33,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:33,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:33,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:33,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:33,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:33,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620143252] [2020-10-13 10:24:33,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:33,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:24:33,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949710494] [2020-10-13 10:24:33,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:24:33,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:24:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:24:33,124 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand 9 states. [2020-10-13 10:24:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:33,491 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2020-10-13 10:24:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:24:33,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-13 10:24:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:33,493 INFO L225 Difference]: With dead ends: 154 [2020-10-13 10:24:33,493 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:24:33,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:24:33,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:24:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2020-10-13 10:24:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:24:33,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions. [2020-10-13 10:24:33,504 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 31 [2020-10-13 10:24:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:33,505 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 137 transitions. [2020-10-13 10:24:33,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:24:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions. [2020-10-13 10:24:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:24:33,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:33,507 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] [2020-10-13 10:24:33,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:24:33,507 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:33,508 INFO L82 PathProgramCache]: Analyzing trace with hash 816547758, now seen corresponding path program 1 times [2020-10-13 10:24:33,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:33,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721185406] [2020-10-13 10:24:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:24:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:24:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-10-13 10:24:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:24:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:24:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:35,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:35,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:35,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:35,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:35,949 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 10:24:35,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721185406] [2020-10-13 10:24:35,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:35,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:24:35,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585388108] [2020-10-13 10:24:35,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:24:35,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:35,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:24:35,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:24:35,952 INFO L87 Difference]: Start difference. First operand 109 states and 137 transitions. Second operand 8 states. [2020-10-13 10:24:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:36,224 INFO L93 Difference]: Finished difference Result 171 states and 208 transitions. [2020-10-13 10:24:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:24:36,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-13 10:24:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:36,226 INFO L225 Difference]: With dead ends: 171 [2020-10-13 10:24:36,226 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 10:24:36,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:24:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 10:24:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-13 10:24:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 10:24:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 153 transitions. [2020-10-13 10:24:36,235 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 153 transitions. Word has length 31 [2020-10-13 10:24:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:36,235 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 153 transitions. [2020-10-13 10:24:36,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:24:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 153 transitions. [2020-10-13 10:24:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:24:36,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:36,236 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] [2020-10-13 10:24:36,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:24:36,237 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:36,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash 7201132, now seen corresponding path program 1 times [2020-10-13 10:24:36,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:36,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458238656] [2020-10-13 10:24:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:36,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:36,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:24:36,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 10:24:36,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:24:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:24:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:36,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:36,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:36,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:36,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:36,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:36,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:36,802 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 10:24:36,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458238656] [2020-10-13 10:24:36,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:36,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:24:36,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276550615] [2020-10-13 10:24:36,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:24:36,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:36,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:24:36,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:24:36,805 INFO L87 Difference]: Start difference. First operand 121 states and 153 transitions. Second operand 10 states. [2020-10-13 10:24:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:37,201 INFO L93 Difference]: Finished difference Result 180 states and 216 transitions. [2020-10-13 10:24:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:24:37,202 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-13 10:24:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:37,203 INFO L225 Difference]: With dead ends: 180 [2020-10-13 10:24:37,203 INFO L226 Difference]: Without dead ends: 178 [2020-10-13 10:24:37,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-13 10:24:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 133. [2020-10-13 10:24:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-13 10:24:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 167 transitions. [2020-10-13 10:24:37,217 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 167 transitions. Word has length 31 [2020-10-13 10:24:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:37,217 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 167 transitions. [2020-10-13 10:24:37,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:24:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 167 transitions. [2020-10-13 10:24:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:24:37,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:37,218 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:37,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:24:37,218 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1224419173, now seen corresponding path program 1 times [2020-10-13 10:24:37,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:37,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659115391] [2020-10-13 10:24:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:37,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:37,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:24:37,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-13 10:24:37,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:24:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:24:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:37,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:37,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659115391] [2020-10-13 10:24:37,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:37,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:24:37,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147889461] [2020-10-13 10:24:37,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:24:37,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:24:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:37,703 INFO L87 Difference]: Start difference. First operand 133 states and 167 transitions. Second operand 11 states. [2020-10-13 10:24:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:38,571 INFO L93 Difference]: Finished difference Result 206 states and 252 transitions. [2020-10-13 10:24:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:24:38,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-13 10:24:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:38,575 INFO L225 Difference]: With dead ends: 206 [2020-10-13 10:24:38,575 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 10:24:38,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 10:24:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 142. [2020-10-13 10:24:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 10:24:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2020-10-13 10:24:38,592 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 32 [2020-10-13 10:24:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:38,595 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2020-10-13 10:24:38,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:24:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2020-10-13 10:24:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:24:38,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:38,596 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] [2020-10-13 10:24:38,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:24:38,596 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash 222743739, now seen corresponding path program 1 times [2020-10-13 10:24:38,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:38,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245833055] [2020-10-13 10:24:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:38,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:24:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-13 10:24:38,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:24:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:24:38,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:39,339 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 10:24:39,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245833055] [2020-10-13 10:24:39,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:39,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:24:39,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011432982] [2020-10-13 10:24:39,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:24:39,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:24:39,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:39,343 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand 11 states. [2020-10-13 10:24:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:39,921 INFO L93 Difference]: Finished difference Result 202 states and 243 transitions. [2020-10-13 10:24:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:24:39,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-13 10:24:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:39,923 INFO L225 Difference]: With dead ends: 202 [2020-10-13 10:24:39,923 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 10:24:39,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 10:24:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2020-10-13 10:24:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 10:24:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 181 transitions. [2020-10-13 10:24:39,937 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 181 transitions. Word has length 32 [2020-10-13 10:24:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:39,938 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 181 transitions. [2020-10-13 10:24:39,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:24:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 181 transitions. [2020-10-13 10:24:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:24:39,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:39,939 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] [2020-10-13 10:24:39,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:24:39,939 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash 280002041, now seen corresponding path program 1 times [2020-10-13 10:24:39,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:39,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564622600] [2020-10-13 10:24:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:40,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:24:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:24:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-13 10:24:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:24:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:24:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:24:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:40,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:24:40,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564622600] [2020-10-13 10:24:40,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:24:40,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:24:40,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707512800] [2020-10-13 10:24:40,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:24:40,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:24:40,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:24:40,782 INFO L87 Difference]: Start difference. First operand 143 states and 181 transitions. Second operand 5 states. [2020-10-13 10:24:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:40,915 INFO L93 Difference]: Finished difference Result 168 states and 207 transitions. [2020-10-13 10:24:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:24:40,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-13 10:24:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:40,917 INFO L225 Difference]: With dead ends: 168 [2020-10-13 10:24:40,917 INFO L226 Difference]: Without dead ends: 156 [2020-10-13 10:24:40,918 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 10:24:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-13 10:24:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-10-13 10:24:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 10:24:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 180 transitions. [2020-10-13 10:24:40,928 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 180 transitions. Word has length 32 [2020-10-13 10:24:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:40,929 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 180 transitions. [2020-10-13 10:24:40,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:24:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 180 transitions. [2020-10-13 10:24:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:24:40,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:40,931 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:40,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:24:40,931 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1570859960, now seen corresponding path program 2 times [2020-10-13 10:24:40,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:40,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397162362] [2020-10-13 10:24:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:24:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 10:24:41,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:24:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:24:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:41,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:41,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397162362] [2020-10-13 10:24:41,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:41,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:24:41,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138278302] [2020-10-13 10:24:41,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:24:41,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:41,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:24:41,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:41,465 INFO L87 Difference]: Start difference. First operand 143 states and 180 transitions. Second operand 11 states. [2020-10-13 10:24:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:42,059 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2020-10-13 10:24:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:24:42,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-13 10:24:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:42,061 INFO L225 Difference]: With dead ends: 257 [2020-10-13 10:24:42,061 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 10:24:42,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:24:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 10:24:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 158. [2020-10-13 10:24:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 10:24:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 200 transitions. [2020-10-13 10:24:42,079 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 200 transitions. Word has length 33 [2020-10-13 10:24:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:42,079 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 200 transitions. [2020-10-13 10:24:42,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:24:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 200 transitions. [2020-10-13 10:24:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:24:42,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:42,080 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 10:24:42,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:24:42,081 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1669516016, now seen corresponding path program 1 times [2020-10-13 10:24:42,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:42,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886211461] [2020-10-13 10:24:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:42,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:24:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:42,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:42,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:42,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:42,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:24:42,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886211461] [2020-10-13 10:24:42,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:24:42,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:24:42,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103492048] [2020-10-13 10:24:42,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:24:42,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:42,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:24:42,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:24:42,694 INFO L87 Difference]: Start difference. First operand 158 states and 200 transitions. Second operand 6 states. [2020-10-13 10:24:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:42,828 INFO L93 Difference]: Finished difference Result 159 states and 201 transitions. [2020-10-13 10:24:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:24:42,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 10:24:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:42,830 INFO L225 Difference]: With dead ends: 159 [2020-10-13 10:24:42,830 INFO L226 Difference]: Without dead ends: 157 [2020-10-13 10:24:42,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:24:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-13 10:24:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-10-13 10:24:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 10:24:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2020-10-13 10:24:42,840 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 33 [2020-10-13 10:24:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:42,840 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2020-10-13 10:24:42,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:24:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2020-10-13 10:24:42,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:24:42,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:42,841 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:42,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:24:42,842 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 793625404, now seen corresponding path program 2 times [2020-10-13 10:24:42,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:42,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125313829] [2020-10-13 10:24:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:43,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:43,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:24:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:43,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:43,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:43,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:24:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:43,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125313829] [2020-10-13 10:24:43,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:43,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:24:43,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200861030] [2020-10-13 10:24:43,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:24:43,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:24:43,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:43,376 INFO L87 Difference]: Start difference. First operand 156 states and 198 transitions. Second operand 12 states. [2020-10-13 10:24:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:44,234 INFO L93 Difference]: Finished difference Result 253 states and 318 transitions. [2020-10-13 10:24:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:24:44,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-13 10:24:44,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:44,237 INFO L225 Difference]: With dead ends: 253 [2020-10-13 10:24:44,238 INFO L226 Difference]: Without dead ends: 251 [2020-10-13 10:24:44,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:24:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-13 10:24:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 173. [2020-10-13 10:24:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-13 10:24:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 223 transitions. [2020-10-13 10:24:44,250 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 223 transitions. Word has length 33 [2020-10-13 10:24:44,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:44,251 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 223 transitions. [2020-10-13 10:24:44,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:24:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 223 transitions. [2020-10-13 10:24:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:24:44,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:44,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:44,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:24:44,252 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -728743133, now seen corresponding path program 2 times [2020-10-13 10:24:44,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:44,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134501279] [2020-10-13 10:24:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:45,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:45,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:24:45,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-13 10:24:45,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:24:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:24:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:45,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:45,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:24:45,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:45,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134501279] [2020-10-13 10:24:45,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:45,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:24:45,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984796730] [2020-10-13 10:24:45,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:24:45,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:45,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:24:45,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:24:45,520 INFO L87 Difference]: Start difference. First operand 173 states and 223 transitions. Second operand 10 states. [2020-10-13 10:24:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:46,083 INFO L93 Difference]: Finished difference Result 243 states and 302 transitions. [2020-10-13 10:24:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:24:46,084 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 10:24:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:46,085 INFO L225 Difference]: With dead ends: 243 [2020-10-13 10:24:46,086 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 10:24:46,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:24:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 10:24:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 173. [2020-10-13 10:24:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-13 10:24:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2020-10-13 10:24:46,102 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 35 [2020-10-13 10:24:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:46,102 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2020-10-13 10:24:46,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:24:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2020-10-13 10:24:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:24:46,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:46,103 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:46,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:24:46,104 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash -642594239, now seen corresponding path program 1 times [2020-10-13 10:24:46,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:46,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791744259] [2020-10-13 10:24:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:50,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:50,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:24:50,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 10:24:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4113 [2020-10-13 10:24:50,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:24:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:24:50,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:50,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:50,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:50,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:50,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:50,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791744259] [2020-10-13 10:24:50,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:50,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:24:50,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679047605] [2020-10-13 10:24:50,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:24:50,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:50,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:24:50,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:24:50,309 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand 9 states. [2020-10-13 10:24:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:50,584 INFO L93 Difference]: Finished difference Result 233 states and 287 transitions. [2020-10-13 10:24:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:24:50,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-13 10:24:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:50,586 INFO L225 Difference]: With dead ends: 233 [2020-10-13 10:24:50,586 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 10:24:50,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 10:24:50,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 167. [2020-10-13 10:24:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-13 10:24:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 210 transitions. [2020-10-13 10:24:50,600 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 210 transitions. Word has length 35 [2020-10-13 10:24:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:50,600 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 210 transitions. [2020-10-13 10:24:50,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:24:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 210 transitions. [2020-10-13 10:24:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:24:50,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:50,601 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:50,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:24:50,601 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:50,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash 171719747, now seen corresponding path program 1 times [2020-10-13 10:24:50,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:50,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950836263] [2020-10-13 10:24:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:24:50,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-13 10:24:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:24:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:24:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:51,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950836263] [2020-10-13 10:24:51,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:51,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:24:51,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801650824] [2020-10-13 10:24:51,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:24:51,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:24:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:51,327 INFO L87 Difference]: Start difference. First operand 167 states and 210 transitions. Second operand 12 states. [2020-10-13 10:24:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:52,380 INFO L93 Difference]: Finished difference Result 296 states and 368 transitions. [2020-10-13 10:24:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:24:52,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-13 10:24:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:52,383 INFO L225 Difference]: With dead ends: 296 [2020-10-13 10:24:52,386 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 10:24:52,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:52,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 10:24:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 204. [2020-10-13 10:24:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-13 10:24:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 260 transitions. [2020-10-13 10:24:52,403 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 260 transitions. Word has length 35 [2020-10-13 10:24:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:52,403 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 260 transitions. [2020-10-13 10:24:52,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:24:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 260 transitions. [2020-10-13 10:24:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:24:52,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:52,404 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-13 10:24:52,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:24:52,405 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -717669904, now seen corresponding path program 3 times [2020-10-13 10:24:52,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:52,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162794439] [2020-10-13 10:24:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:52,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:24:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-13 10:24:52,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:24:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:24:52,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:52,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:52,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:52,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:52,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:52,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162794439] [2020-10-13 10:24:52,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:52,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:24:52,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546788955] [2020-10-13 10:24:52,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:24:52,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:24:52,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:52,962 INFO L87 Difference]: Start difference. First operand 204 states and 260 transitions. Second operand 12 states. [2020-10-13 10:24:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:53,640 INFO L93 Difference]: Finished difference Result 316 states and 390 transitions. [2020-10-13 10:24:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:24:53,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-13 10:24:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:53,642 INFO L225 Difference]: With dead ends: 316 [2020-10-13 10:24:53,643 INFO L226 Difference]: Without dead ends: 281 [2020-10-13 10:24:53,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-13 10:24:53,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 220. [2020-10-13 10:24:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-13 10:24:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 280 transitions. [2020-10-13 10:24:53,661 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 280 transitions. Word has length 36 [2020-10-13 10:24:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:53,661 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 280 transitions. [2020-10-13 10:24:53,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:24:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 280 transitions. [2020-10-13 10:24:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:24:53,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:53,663 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-13 10:24:53,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:24:53,663 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash 404133486, now seen corresponding path program 4 times [2020-10-13 10:24:53,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:53,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440589271] [2020-10-13 10:24:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:53,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:54,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:24:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:54,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:54,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:54,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440589271] [2020-10-13 10:24:54,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:54,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:24:54,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997837251] [2020-10-13 10:24:54,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:24:54,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:54,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:24:54,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:24:54,293 INFO L87 Difference]: Start difference. First operand 220 states and 280 transitions. Second operand 13 states. [2020-10-13 10:24:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:55,152 INFO L93 Difference]: Finished difference Result 296 states and 372 transitions. [2020-10-13 10:24:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:24:55,155 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-13 10:24:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:55,157 INFO L225 Difference]: With dead ends: 296 [2020-10-13 10:24:55,157 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 10:24:55,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 10:24:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 234. [2020-10-13 10:24:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-13 10:24:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2020-10-13 10:24:55,175 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 36 [2020-10-13 10:24:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:55,175 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2020-10-13 10:24:55,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:24:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2020-10-13 10:24:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:24:55,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:55,177 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:55,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:24:55,177 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1027853508, now seen corresponding path program 1 times [2020-10-13 10:24:55,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:55,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179391925] [2020-10-13 10:24:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:24:55,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-13 10:24:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:24:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:24:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:56,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:56,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179391925] [2020-10-13 10:24:56,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:56,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:24:56,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26876639] [2020-10-13 10:24:56,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:24:56,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:56,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:24:56,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:56,366 INFO L87 Difference]: Start difference. First operand 234 states and 299 transitions. Second operand 12 states. [2020-10-13 10:24:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:57,340 INFO L93 Difference]: Finished difference Result 329 states and 412 transitions. [2020-10-13 10:24:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:24:57,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-13 10:24:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:57,342 INFO L225 Difference]: With dead ends: 329 [2020-10-13 10:24:57,343 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 10:24:57,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:24:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 10:24:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 227. [2020-10-13 10:24:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-13 10:24:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 290 transitions. [2020-10-13 10:24:57,360 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 290 transitions. Word has length 36 [2020-10-13 10:24:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:57,360 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 290 transitions. [2020-10-13 10:24:57,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:24:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 290 transitions. [2020-10-13 10:24:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:24:57,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:57,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:57,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:24:57,361 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:57,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2088983579, now seen corresponding path program 1 times [2020-10-13 10:24:57,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:57,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874699795] [2020-10-13 10:24:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:57,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:24:57,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 10:24:57,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:24:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:57,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:24:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:57,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:57,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:57,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:57,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:57,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874699795] [2020-10-13 10:24:57,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:57,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:24:57,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097019731] [2020-10-13 10:24:57,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:24:57,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:57,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:24:57,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:24:57,820 INFO L87 Difference]: Start difference. First operand 227 states and 290 transitions. Second operand 12 states. [2020-10-13 10:24:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:58,431 INFO L93 Difference]: Finished difference Result 317 states and 391 transitions. [2020-10-13 10:24:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:24:58,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-13 10:24:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:58,434 INFO L225 Difference]: With dead ends: 317 [2020-10-13 10:24:58,434 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 10:24:58,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 10:24:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 249. [2020-10-13 10:24:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 10:24:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 320 transitions. [2020-10-13 10:24:58,454 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 320 transitions. Word has length 37 [2020-10-13 10:24:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:58,454 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 320 transitions. [2020-10-13 10:24:58,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:24:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 320 transitions. [2020-10-13 10:24:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:24:58,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:58,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:58,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:24:58,456 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1279636953, now seen corresponding path program 1 times [2020-10-13 10:24:58,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:58,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615170595] [2020-10-13 10:24:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:58,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:58,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:24:58,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-13 10:24:58,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:24:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:24:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:59,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615170595] [2020-10-13 10:24:59,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:59,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:24:59,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776100501] [2020-10-13 10:24:59,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:24:59,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:59,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:24:59,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:24:59,032 INFO L87 Difference]: Start difference. First operand 249 states and 320 transitions. Second operand 9 states. [2020-10-13 10:24:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:59,356 INFO L93 Difference]: Finished difference Result 280 states and 354 transitions. [2020-10-13 10:24:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:24:59,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-13 10:24:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:59,361 INFO L225 Difference]: With dead ends: 280 [2020-10-13 10:24:59,361 INFO L226 Difference]: Without dead ends: 256 [2020-10-13 10:24:59,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:24:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-13 10:24:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2020-10-13 10:24:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-13 10:24:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 325 transitions. [2020-10-13 10:24:59,386 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 325 transitions. Word has length 37 [2020-10-13 10:24:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:59,386 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 325 transitions. [2020-10-13 10:24:59,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:24:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 325 transitions. [2020-10-13 10:24:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:24:59,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:59,387 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:59,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:24:59,388 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:59,388 INFO L82 PathProgramCache]: Analyzing trace with hash -17775533, now seen corresponding path program 3 times [2020-10-13 10:24:59,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:59,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98588452] [2020-10-13 10:24:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:59,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:59,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:24:59,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 10:24:59,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:24:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:59,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:59,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:59,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:00,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98588452] [2020-10-13 10:25:00,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:00,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:00,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894454187] [2020-10-13 10:25:00,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:00,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:00,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:00,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:00,003 INFO L87 Difference]: Start difference. First operand 254 states and 325 transitions. Second operand 13 states. [2020-10-13 10:25:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:00,700 INFO L93 Difference]: Finished difference Result 326 states and 413 transitions. [2020-10-13 10:25:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:25:00,700 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-13 10:25:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:00,702 INFO L225 Difference]: With dead ends: 326 [2020-10-13 10:25:00,703 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 10:25:00,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:25:00,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 10:25:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 249. [2020-10-13 10:25:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 10:25:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 317 transitions. [2020-10-13 10:25:00,721 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 317 transitions. Word has length 37 [2020-10-13 10:25:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:00,722 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 317 transitions. [2020-10-13 10:25:00,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 317 transitions. [2020-10-13 10:25:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:25:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:00,723 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:00,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:25:00,723 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash -536500912, now seen corresponding path program 1 times [2020-10-13 10:25:00,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:00,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287823819] [2020-10-13 10:25:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:00,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:00,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:25:00,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 10:25:00,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:25:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:25:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:01,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:01,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:01,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:01,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:01,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287823819] [2020-10-13 10:25:01,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:01,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:25:01,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807392879] [2020-10-13 10:25:01,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:25:01,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:01,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:25:01,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:01,038 INFO L87 Difference]: Start difference. First operand 249 states and 317 transitions. Second operand 11 states. [2020-10-13 10:25:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:01,789 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-10-13 10:25:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:25:01,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-13 10:25:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:01,791 INFO L225 Difference]: With dead ends: 317 [2020-10-13 10:25:01,791 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 10:25:01,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 10:25:01,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 258. [2020-10-13 10:25:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 10:25:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 328 transitions. [2020-10-13 10:25:01,809 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 328 transitions. Word has length 38 [2020-10-13 10:25:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:01,809 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 328 transitions. [2020-10-13 10:25:01,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:25:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 328 transitions. [2020-10-13 10:25:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:25:01,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:01,811 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:01,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:25:01,811 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1226126595, now seen corresponding path program 1 times [2020-10-13 10:25:01,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:01,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732510474] [2020-10-13 10:25:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:02,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:02,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:25:02,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-13 10:25:02,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:02,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:25:02,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:25:02,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732510474] [2020-10-13 10:25:02,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:02,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:02,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76862743] [2020-10-13 10:25:02,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:02,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:02,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:02,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:02,419 INFO L87 Difference]: Start difference. First operand 258 states and 328 transitions. Second operand 12 states. [2020-10-13 10:25:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:03,126 INFO L93 Difference]: Finished difference Result 331 states and 407 transitions. [2020-10-13 10:25:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:25:03,127 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-13 10:25:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:03,129 INFO L225 Difference]: With dead ends: 331 [2020-10-13 10:25:03,129 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 10:25:03,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:25:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 10:25:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 258. [2020-10-13 10:25:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 10:25:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 328 transitions. [2020-10-13 10:25:03,144 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 328 transitions. Word has length 38 [2020-10-13 10:25:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:03,145 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 328 transitions. [2020-10-13 10:25:03,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 328 transitions. [2020-10-13 10:25:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:25:03,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:03,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:03,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:25:03,146 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash 333490156, now seen corresponding path program 1 times [2020-10-13 10:25:03,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:03,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375307198] [2020-10-13 10:25:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:25:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-13 10:25:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:25:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:25:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:04,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375307198] [2020-10-13 10:25:04,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:04,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:04,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248966736] [2020-10-13 10:25:04,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:04,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:04,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:04,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:04,133 INFO L87 Difference]: Start difference. First operand 258 states and 328 transitions. Second operand 12 states. [2020-10-13 10:25:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:04,707 INFO L93 Difference]: Finished difference Result 326 states and 402 transitions. [2020-10-13 10:25:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:25:04,708 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-13 10:25:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:04,709 INFO L225 Difference]: With dead ends: 326 [2020-10-13 10:25:04,709 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 10:25:04,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:25:04,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 10:25:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 258. [2020-10-13 10:25:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 10:25:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 328 transitions. [2020-10-13 10:25:04,730 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 328 transitions. Word has length 38 [2020-10-13 10:25:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:04,730 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 328 transitions. [2020-10-13 10:25:04,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 328 transitions. [2020-10-13 10:25:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:25:04,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:04,732 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:04,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:25:04,732 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash 8376, now seen corresponding path program 5 times [2020-10-13 10:25:04,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:04,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291475031] [2020-10-13 10:25:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:25:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-13 10:25:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:25:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:25:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:05,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291475031] [2020-10-13 10:25:05,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:05,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:05,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752899102] [2020-10-13 10:25:05,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:05,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:05,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:05,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:05,409 INFO L87 Difference]: Start difference. First operand 258 states and 328 transitions. Second operand 13 states. [2020-10-13 10:25:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:06,468 INFO L93 Difference]: Finished difference Result 347 states and 435 transitions. [2020-10-13 10:25:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:25:06,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-13 10:25:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:06,471 INFO L225 Difference]: With dead ends: 347 [2020-10-13 10:25:06,472 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 10:25:06,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:25:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 10:25:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 278. [2020-10-13 10:25:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-13 10:25:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 357 transitions. [2020-10-13 10:25:06,495 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 357 transitions. Word has length 39 [2020-10-13 10:25:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:06,495 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 357 transitions. [2020-10-13 10:25:06,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 357 transitions. [2020-10-13 10:25:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:25:06,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:06,497 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:06,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:25:06,497 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash -645272572, now seen corresponding path program 1 times [2020-10-13 10:25:06,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:06,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276403561] [2020-10-13 10:25:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:25:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-13 10:25:06,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:25:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:07,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:07,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:25:07,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276403561] [2020-10-13 10:25:07,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:07,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:07,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805640055] [2020-10-13 10:25:07,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:07,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:07,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:07,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:07,186 INFO L87 Difference]: Start difference. First operand 278 states and 357 transitions. Second operand 12 states. [2020-10-13 10:25:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:07,731 INFO L93 Difference]: Finished difference Result 346 states and 430 transitions. [2020-10-13 10:25:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:25:07,732 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-13 10:25:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:07,734 INFO L225 Difference]: With dead ends: 346 [2020-10-13 10:25:07,734 INFO L226 Difference]: Without dead ends: 335 [2020-10-13 10:25:07,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:25:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-13 10:25:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 274. [2020-10-13 10:25:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-13 10:25:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 351 transitions. [2020-10-13 10:25:07,756 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 351 transitions. Word has length 39 [2020-10-13 10:25:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:07,756 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 351 transitions. [2020-10-13 10:25:07,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 351 transitions. [2020-10-13 10:25:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:25:07,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:07,761 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:07,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:25:07,761 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2099467162, now seen corresponding path program 2 times [2020-10-13 10:25:07,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:07,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179997641] [2020-10-13 10:25:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:08,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:08,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:25:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:08,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:08,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:08,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:08,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179997641] [2020-10-13 10:25:08,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:08,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:08,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148410034] [2020-10-13 10:25:08,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:08,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:08,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:08,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:08,442 INFO L87 Difference]: Start difference. First operand 274 states and 351 transitions. Second operand 12 states. [2020-10-13 10:25:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:08,930 INFO L93 Difference]: Finished difference Result 327 states and 409 transitions. [2020-10-13 10:25:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:25:08,931 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-13 10:25:08,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:08,933 INFO L225 Difference]: With dead ends: 327 [2020-10-13 10:25:08,933 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 10:25:08,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:25:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 10:25:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 278. [2020-10-13 10:25:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-13 10:25:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 357 transitions. [2020-10-13 10:25:08,955 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 357 transitions. Word has length 39 [2020-10-13 10:25:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:08,955 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 357 transitions. [2020-10-13 10:25:08,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 357 transitions. [2020-10-13 10:25:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:25:08,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:08,956 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:08,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:25:08,957 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:08,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2090649693, now seen corresponding path program 1 times [2020-10-13 10:25:08,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:08,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700616366] [2020-10-13 10:25:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:09,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:09,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:25:09,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 10:25:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:25:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:25:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:09,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 10:25:09,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700616366] [2020-10-13 10:25:09,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:09,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:25:09,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997566672] [2020-10-13 10:25:09,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:25:09,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:09,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:25:09,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:25:09,090 INFO L87 Difference]: Start difference. First operand 278 states and 357 transitions. Second operand 4 states. [2020-10-13 10:25:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:09,201 INFO L93 Difference]: Finished difference Result 447 states and 572 transitions. [2020-10-13 10:25:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:25:09,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-13 10:25:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:09,204 INFO L225 Difference]: With dead ends: 447 [2020-10-13 10:25:09,204 INFO L226 Difference]: Without dead ends: 234 [2020-10-13 10:25:09,205 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 10:25:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-13 10:25:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2020-10-13 10:25:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-13 10:25:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 288 transitions. [2020-10-13 10:25:09,217 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 288 transitions. Word has length 39 [2020-10-13 10:25:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:09,218 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 288 transitions. [2020-10-13 10:25:09,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:25:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 288 transitions. [2020-10-13 10:25:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:25:09,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:09,219 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:09,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:25:09,219 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash 398790395, now seen corresponding path program 6 times [2020-10-13 10:25:09,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:09,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492943474] [2020-10-13 10:25:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:09,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:09,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:25:09,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:09,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 10:25:09,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:25:09,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:25:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:09,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:09,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492943474] [2020-10-13 10:25:09,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:09,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:09,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461229834] [2020-10-13 10:25:09,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:09,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:09,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:09,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:09,762 INFO L87 Difference]: Start difference. First operand 233 states and 288 transitions. Second operand 13 states. [2020-10-13 10:25:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:10,428 INFO L93 Difference]: Finished difference Result 333 states and 410 transitions. [2020-10-13 10:25:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:25:10,432 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:25:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:10,433 INFO L225 Difference]: With dead ends: 333 [2020-10-13 10:25:10,433 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 10:25:10,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:25:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 10:25:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 247. [2020-10-13 10:25:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-13 10:25:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 305 transitions. [2020-10-13 10:25:10,449 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 305 transitions. Word has length 40 [2020-10-13 10:25:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:10,449 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 305 transitions. [2020-10-13 10:25:10,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 305 transitions. [2020-10-13 10:25:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:25:10,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:10,450 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:10,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:25:10,450 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:10,450 INFO L82 PathProgramCache]: Analyzing trace with hash -27174665, now seen corresponding path program 7 times [2020-10-13 10:25:10,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:10,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809063761] [2020-10-13 10:25:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:10,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:25:10,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-13 10:25:10,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:25:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:25:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:11,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:11,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:11,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:11,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:11,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809063761] [2020-10-13 10:25:11,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:11,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:25:11,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639506514] [2020-10-13 10:25:11,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:25:11,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:11,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:25:11,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:25:11,085 INFO L87 Difference]: Start difference. First operand 247 states and 305 transitions. Second operand 14 states. [2020-10-13 10:25:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:12,149 INFO L93 Difference]: Finished difference Result 360 states and 445 transitions. [2020-10-13 10:25:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:25:12,149 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-13 10:25:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:12,152 INFO L225 Difference]: With dead ends: 360 [2020-10-13 10:25:12,153 INFO L226 Difference]: Without dead ends: 358 [2020-10-13 10:25:12,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:25:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-13 10:25:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 281. [2020-10-13 10:25:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 10:25:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 350 transitions. [2020-10-13 10:25:12,172 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 350 transitions. Word has length 40 [2020-10-13 10:25:12,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:12,173 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 350 transitions. [2020-10-13 10:25:12,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:25:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 350 transitions. [2020-10-13 10:25:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:25:12,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:12,174 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 10:25:12,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:25:12,174 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:12,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:12,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1045253799, now seen corresponding path program 1 times [2020-10-13 10:25:12,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:12,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880239602] [2020-10-13 10:25:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:12,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:25:12,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 10:25:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:25:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:25:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:25:12,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880239602] [2020-10-13 10:25:12,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:12,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:25:12,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005393607] [2020-10-13 10:25:12,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:25:12,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:12,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:25:12,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:25:12,412 INFO L87 Difference]: Start difference. First operand 281 states and 350 transitions. Second operand 10 states. [2020-10-13 10:25:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:12,999 INFO L93 Difference]: Finished difference Result 378 states and 454 transitions. [2020-10-13 10:25:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:25:12,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-13 10:25:12,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:13,001 INFO L225 Difference]: With dead ends: 378 [2020-10-13 10:25:13,001 INFO L226 Difference]: Without dead ends: 348 [2020-10-13 10:25:13,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:25:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-13 10:25:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 293. [2020-10-13 10:25:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-13 10:25:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 359 transitions. [2020-10-13 10:25:13,021 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 359 transitions. Word has length 40 [2020-10-13 10:25:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:13,021 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 359 transitions. [2020-10-13 10:25:13,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:25:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 359 transitions. [2020-10-13 10:25:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:25:13,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:13,022 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:13,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:25:13,022 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:13,022 INFO L82 PathProgramCache]: Analyzing trace with hash 658481229, now seen corresponding path program 2 times [2020-10-13 10:25:13,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:13,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475860856] [2020-10-13 10:25:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:25:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-13 10:25:13,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:25:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:25:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:14,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:14,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475860856] [2020-10-13 10:25:14,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:14,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:14,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587835554] [2020-10-13 10:25:14,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:14,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:14,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:14,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:14,283 INFO L87 Difference]: Start difference. First operand 293 states and 359 transitions. Second operand 13 states. [2020-10-13 10:25:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:14,921 INFO L93 Difference]: Finished difference Result 315 states and 381 transitions. [2020-10-13 10:25:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:25:14,922 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:25:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:14,925 INFO L225 Difference]: With dead ends: 315 [2020-10-13 10:25:14,925 INFO L226 Difference]: Without dead ends: 304 [2020-10-13 10:25:14,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:25:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-13 10:25:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 286. [2020-10-13 10:25:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-13 10:25:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 351 transitions. [2020-10-13 10:25:14,947 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 351 transitions. Word has length 40 [2020-10-13 10:25:14,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:14,948 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 351 transitions. [2020-10-13 10:25:14,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 351 transitions. [2020-10-13 10:25:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:25:14,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:14,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:14,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:25:14,950 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1956379246, now seen corresponding path program 1 times [2020-10-13 10:25:14,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:14,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150128573] [2020-10-13 10:25:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:25:14,964 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:25:14,964 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:25:14,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:25:14,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:25:14 BoogieIcfgContainer [2020-10-13 10:25:14,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:25:14,989 INFO L168 Benchmark]: Toolchain (without parser) took 51029.13 ms. Allocated memory was 141.0 MB in the beginning and 687.9 MB in the end (delta: 546.8 MB). Free memory was 103.4 MB in the beginning and 610.1 MB in the end (delta: -506.7 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:25:14,990 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:25:14,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.07 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 172.1 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:25:14,991 INFO L168 Benchmark]: Boogie Preprocessor took 73.86 ms. Allocated memory is still 205.5 MB. Free memory was 172.1 MB in the beginning and 168.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:25:14,991 INFO L168 Benchmark]: RCFGBuilder took 677.91 ms. Allocated memory is still 205.5 MB. Free memory was 168.7 MB in the beginning and 117.1 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:25:14,991 INFO L168 Benchmark]: TraceAbstraction took 49651.15 ms. Allocated memory was 205.5 MB in the beginning and 687.9 MB in the end (delta: 482.3 MB). Free memory was 116.4 MB in the beginning and 610.1 MB in the end (delta: -493.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:25:14,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.07 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 172.1 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.86 ms. Allocated memory is still 205.5 MB. Free memory was 172.1 MB in the beginning and 168.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.91 ms. Allocated memory is still 205.5 MB. Free memory was 168.7 MB in the beginning and 117.1 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 49651.15 ms. Allocated memory was 205.5 MB in the beginning and 687.9 MB in the end (delta: 482.3 MB). Free memory was 116.4 MB in the beginning and 610.1 MB in the end (delta: -493.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1051]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] head->data = 0 [L989] SLL* x = head; [L990] int marked = 0; [L993] COND TRUE __VERIFIER_nondet_int() || !marked [L996] x->next = malloc(sizeof(SLL)) [L997] EXPR x->next [L997] x = x->next [L998] x->next = ((void*)0) [L1000] COND TRUE __VERIFIER_nondet_int() [L1002] marked = 1 [L1005] COND TRUE \read(marked) [L1006] x->data = 1 [L993] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1014] marked = 0 [L1016] EXPR x->next [L1016] x->next != ((void*)0) && x->next->data == 0 [L1016] EXPR x->next [L1016] EXPR x->next->data [L1016] x->next != ((void*)0) && x->next->data == 0 [L1016] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1021] EXPR x->next [L1021] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1021] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1021] COND FALSE !(x->next != ((void*)0) && __VERIFIER_nondet_int()) [L1027] SLL* tmp = malloc(sizeof(SLL)); [L1028] tmp->data = 1 [L1029] tmp->next = ((void*)0) [L1030] EXPR x->next [L1030] COND FALSE !(x->next == ((void*)0)) [L1034] EXPR x->next [L1034] tmp->next = x->next [L1035] x->next = tmp [L1038] marked = 0 [L1039] x = head [L1041] x != ((void*)0) && x->data != 1 [L1041] EXPR x->data [L1041] x != ((void*)0) && x->data != 1 [L1041] COND TRUE x != ((void*)0) && x->data != 1 [L1043] EXPR x->data [L1043] marked = x->data [L1044] EXPR x->data [L1044] COND FALSE !(!(x->data == 0)) [L1045] COND FALSE !(!(marked == 0)) [L1046] EXPR x->next [L1046] x = x->next [L1041] x != ((void*)0) && x->data != 1 [L1041] EXPR x->data [L1041] x != ((void*)0) && x->data != 1 [L1041] COND FALSE !(x != ((void*)0) && x->data != 1) [L1048] COND TRUE x != ((void*)0) [L1050] EXPR x->data [L1050] marked = x->data [L1051] EXPR x->data [L1051] COND TRUE !(x->data != 1) [L1051] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.5s, OverallIterations: 38, TraceHistogramMax: 5, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2047 SDtfs, 3636 SDslu, 10744 SDs, 0 SdLazy, 12132 SolverSat, 866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 595 GetRequests, 121 SyntacticMatches, 18 SemanticMatches, 456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 37 MinimizatonAttempts, 1551 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 1259 NumberOfCodeBlocks, 1259 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1181 ConstructedInterpolants, 0 QuantifiedInterpolants, 778333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 60/428 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...