/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:12:51,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:12:51,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:12:51,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:12:51,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:12:51,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:12:51,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:12:51,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:12:51,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:12:51,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:12:51,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:12:51,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:12:51,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:12:51,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:12:51,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:12:51,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:12:51,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:12:51,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:12:51,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:12:51,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:12:51,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:12:51,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:12:51,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:12:51,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:12:51,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:12:51,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:12:51,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:12:51,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:12:51,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:12:51,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:12:51,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:12:51,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:12:51,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:12:51,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:12:51,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:12:51,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:12:51,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:12:51,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:12:51,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:12:51,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:12:51,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:12:51,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:12:51,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:12:51,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:12:51,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:12:51,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:12:51,758 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:12:51,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:12:51,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:12:51,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:12:51,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:12:51,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:12:51,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:12:51,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:12:51,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:12:51,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:12:51,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:12:51,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:12:51,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:12:51,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:12:51,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:12:51,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:12:51,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:12:51,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:51,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:12:51,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:12:51,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:12:51,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:12:51,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:12:51,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:12:51,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:12:51,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:12:52,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:12:52,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:12:52,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:12:52,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:12:52,236 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:12:52,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 11:12:52,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ab3bbab/9888ffb3f1f145798ad340cb62eb170b/FLAG6a71b2390 [2020-09-25 11:12:52,948 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:12:52,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 11:12:52,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ab3bbab/9888ffb3f1f145798ad340cb62eb170b/FLAG6a71b2390 [2020-09-25 11:12:53,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3ab3bbab/9888ffb3f1f145798ad340cb62eb170b [2020-09-25 11:12:53,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:12:53,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:12:53,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:53,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:12:53,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:12:53,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d78f5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53, skipping insertion in model container [2020-09-25 11:12:53,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:12:53,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:12:53,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:53,763 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:12:53,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:53,868 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:12:53,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53 WrapperNode [2020-09-25 11:12:53,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:53,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:12:53,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:12:53,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:12:53,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... [2020-09-25 11:12:53,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:12:53,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:12:53,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:12:53,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:12:53,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:54,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:12:54,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:12:54,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 11:12:54,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 11:12:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 11:12:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 11:12:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 11:12:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 11:12:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 11:12:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 11:12:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:12:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:12:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 11:12:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 11:12:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:12:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:12:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:12:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:12:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:12:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:12:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:12:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:12:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:12:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:12:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:12:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:12:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:12:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:12:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:12:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:12:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:12:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:12:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:12:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:12:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:12:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:12:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:12:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:12:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:12:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:12:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:12:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:12:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:12:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:12:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:12:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:12:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:12:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:12:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:12:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:12:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:12:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:12:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:12:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:12:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:12:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:12:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 11:12:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:12:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:12:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:12:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:12:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:12:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:12:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:12:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:12:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:12:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:12:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:12:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:12:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:12:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:12:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:12:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:12:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:12:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:12:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:12:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:12:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:12:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:12:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:12:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:12:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 11:12:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 11:12:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:12:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:12:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:12:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 11:12:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 11:12:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:12:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:12:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 11:12:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:12:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 11:12:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:12:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:12:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:12:54,468 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 11:12:54,696 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:12:54,697 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 11:12:54,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:54 BoogieIcfgContainer [2020-09-25 11:12:54,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:12:54,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:12:54,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:12:54,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:12:54,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:12:53" (1/3) ... [2020-09-25 11:12:54,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd5916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:54, skipping insertion in model container [2020-09-25 11:12:54,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:53" (2/3) ... [2020-09-25 11:12:54,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd5916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:54, skipping insertion in model container [2020-09-25 11:12:54,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:54" (3/3) ... [2020-09-25 11:12:54,711 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 11:12:54,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:12:54,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:12:54,757 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:12:54,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:12:54,788 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:12:54,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:12:54,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:12:54,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:12:54,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:12:54,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:12:54,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:12:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 11:12:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 11:12:54,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:54,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:54,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 11:12:54,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:54,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036949726] [2020-09-25 11:12:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:55,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:12:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:12:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-09-25 11:12:55,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:55,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:12:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:12:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:12:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:55,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:55,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:12:55,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:55,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:12:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:12:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:12:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:55,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:12:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:12:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:12:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:12:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:12:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:55,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 11:12:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:55,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036949726] [2020-09-25 11:12:55,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:55,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:12:55,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32659168] [2020-09-25 11:12:55,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:12:55,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:55,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:12:55,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:12:55,908 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-25 11:12:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:56,595 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-25 11:12:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:12:56,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 11:12:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:56,613 INFO L225 Difference]: With dead ends: 242 [2020-09-25 11:12:56,614 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 11:12:56,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:12:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 11:12:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 11:12:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 11:12:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 11:12:56,686 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 11:12:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:56,687 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 11:12:56,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:12:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 11:12:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:12:56,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:56,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:56,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:12:56,690 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 11:12:56,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:56,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970218024] [2020-09-25 11:12:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:56,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 11:13:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:13:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:13:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 11:13:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:01,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:01,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:01,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:13:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:13:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:13:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:01,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:13:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:01,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:13:01,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 11:13:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:13:01,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:13:01,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:13:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:01,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:13:01,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970218024] [2020-09-25 11:13:01,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:01,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:13:01,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190986000] [2020-09-25 11:13:01,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:13:01,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:01,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:13:01,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:13:01,957 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-25 11:13:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:02,566 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2020-09-25 11:13:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:13:02,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 11:13:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:02,570 INFO L225 Difference]: With dead ends: 181 [2020-09-25 11:13:02,570 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 11:13:02,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:13:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 11:13:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2020-09-25 11:13:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 11:13:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 11:13:02,590 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 51 [2020-09-25 11:13:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:02,590 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 11:13:02,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:13:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 11:13:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 11:13:02,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:02,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:02,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:02,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:02,596 INFO L82 PathProgramCache]: Analyzing trace with hash 884026993, now seen corresponding path program 1 times [2020-09-25 11:13:02,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:02,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015588657] [2020-09-25 11:13:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:13:07,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:13:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:07,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:13:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:13:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:13:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 11:13:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:07,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:07,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:13:07,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:07,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:13:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:13:07,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:07,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:13:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:07,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:13:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:07,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:07,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:13:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:07,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 11:13:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:07,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:13:07,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:07,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:13:07,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:07,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:13:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:13:07,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015588657] [2020-09-25 11:13:07,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:07,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:13:07,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317363385] [2020-09-25 11:13:07,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:13:07,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:13:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:13:07,853 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 9 states. [2020-09-25 11:13:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:08,229 INFO L93 Difference]: Finished difference Result 165 states and 178 transitions. [2020-09-25 11:13:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:13:08,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 11:13:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:08,231 INFO L225 Difference]: With dead ends: 165 [2020-09-25 11:13:08,231 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 11:13:08,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:13:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 11:13:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2020-09-25 11:13:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 11:13:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-09-25 11:13:08,244 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 58 [2020-09-25 11:13:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:08,244 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-09-25 11:13:08,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:13:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-09-25 11:13:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:13:08,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:08,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:08,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:13:08,247 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash 281898851, now seen corresponding path program 1 times [2020-09-25 11:13:08,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:08,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125334950] [2020-09-25 11:13:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:13:13,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:13:13,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:13:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:13,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:13:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:13:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:13:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:13:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 11:13:13,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:13:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:13:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:13:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:13:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 11:13:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:13,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:13:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 11:13:13,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:13,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 11:13:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:13:13,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:13:13,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:13:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:13:13,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125334950] [2020-09-25 11:13:13,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:13,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:13:13,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071565885] [2020-09-25 11:13:13,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:13:13,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:13:13,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:13:13,740 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 9 states. [2020-09-25 11:13:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:14,157 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2020-09-25 11:13:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:13:14,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-09-25 11:13:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:14,160 INFO L225 Difference]: With dead ends: 146 [2020-09-25 11:13:14,160 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 11:13:14,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 11:13:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2020-09-25 11:13:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 11:13:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-25 11:13:14,173 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 76 [2020-09-25 11:13:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:14,175 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-25 11:13:14,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:13:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-25 11:13:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 11:13:14,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:14,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:14,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:13:14,180 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:14,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1557630765, now seen corresponding path program 2 times [2020-09-25 11:13:14,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:14,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873344062] [2020-09-25 11:13:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:14,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 11:13:19,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:13:19,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:13:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:13:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:13:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:13:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:19,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:19,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:13:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:13:19,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:13:19,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:13:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:13:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:13:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 11:13:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:13:19,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:13:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:19,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:13:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:19,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 11:13:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:19,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:13:19,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:13:19,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:19,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:13:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:13:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:13:19,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873344062] [2020-09-25 11:13:19,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:19,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:13:19,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618627274] [2020-09-25 11:13:19,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:13:19,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:19,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:13:19,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:13:19,725 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 13 states. [2020-09-25 11:13:20,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:20,496 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2020-09-25 11:13:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:13:20,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-09-25 11:13:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:20,498 INFO L225 Difference]: With dead ends: 178 [2020-09-25 11:13:20,499 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 11:13:20,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:13:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 11:13:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2020-09-25 11:13:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 11:13:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-25 11:13:20,511 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 89 [2020-09-25 11:13:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:20,511 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-25 11:13:20,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:13:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-25 11:13:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 11:13:20,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:20,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:20,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:13:20,514 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:20,514 INFO L82 PathProgramCache]: Analyzing trace with hash -892358661, now seen corresponding path program 3 times [2020-09-25 11:13:20,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:20,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929093885] [2020-09-25 11:13:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:25,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 11:13:25,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:13:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5325 [2020-09-25 11:13:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-09-25 11:13:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:13:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:13:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:26,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:26,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:26,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:26,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:26,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:13:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:27,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:13:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1237 [2020-09-25 11:13:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:27,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:13:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:13:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:13:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:28,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:28,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:13:28,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 11:13:28,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:28,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:13:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:13:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:13:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:28,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:28,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:13:28,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 11:13:28,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:28,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:13:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:13:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:13:28,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 11:13:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:29,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:13:29,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:29,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:13:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:13:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:13:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 11:13:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:29,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:29,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:29,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 11:13:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:29,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:13:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:13:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:13:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 11:13:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:29,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:29,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:13:29,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 11:13:29,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:29,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:13:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:13:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:13:30,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929093885] [2020-09-25 11:13:30,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:30,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-25 11:13:30,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223724238] [2020-09-25 11:13:30,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-25 11:13:30,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:30,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-25 11:13:30,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1871, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 11:13:30,230 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 45 states. [2020-09-25 11:13:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:36,069 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2020-09-25 11:13:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-25 11:13:36,070 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 107 [2020-09-25 11:13:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:36,072 INFO L225 Difference]: With dead ends: 173 [2020-09-25 11:13:36,072 INFO L226 Difference]: Without dead ends: 170 [2020-09-25 11:13:36,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=503, Invalid=7153, Unknown=0, NotChecked=0, Total=7656 [2020-09-25 11:13:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-25 11:13:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 142. [2020-09-25 11:13:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 11:13:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2020-09-25 11:13:36,092 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 107 [2020-09-25 11:13:36,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:36,093 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2020-09-25 11:13:36,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-25 11:13:36,093 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2020-09-25 11:13:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 11:13:36,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:36,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:36,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:13:36,096 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:36,096 INFO L82 PathProgramCache]: Analyzing trace with hash -350367381, now seen corresponding path program 4 times [2020-09-25 11:13:36,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:36,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345657712] [2020-09-25 11:13:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:37,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking...