/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:10,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:10,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:10,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:10,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:10,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:10,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:10,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:10,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:10,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:10,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:10,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:10,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:10,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:10,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:10,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:10,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:10,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:10,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:10,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:10,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:10,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:10,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:10,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:10,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:10,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:10,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:10,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:10,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:10,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:10,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:10,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:10,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:10,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:10,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:10,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:10,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:10,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:10,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:10,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:10,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:10,590 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 03:15:10,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:10,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:10,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:10,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:10,619 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:10,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:10,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:10,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:10,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:10,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:10,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:10,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:10,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:10,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:10,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:10,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:10,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:10,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:10,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:10,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:10,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:10,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:10,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:10,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:10,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:10,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:10,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:10,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:10,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:10,624 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:15:11,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:11,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:11,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:11,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:11,112 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:11,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-25 03:15:11,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b9e3b60/6677fd15a74548a7ac56590ec949ce36/FLAG06d9ee1a5 [2020-09-25 03:15:11,841 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:11,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-25 03:15:11,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b9e3b60/6677fd15a74548a7ac56590ec949ce36/FLAG06d9ee1a5 [2020-09-25 03:15:12,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b9e3b60/6677fd15a74548a7ac56590ec949ce36 [2020-09-25 03:15:12,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:12,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:12,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:12,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:12,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:12,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64484215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12, skipping insertion in model container [2020-09-25 03:15:12,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:12,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:12,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:12,722 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:12,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:12,844 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:12,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12 WrapperNode [2020-09-25 03:15:12,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:12,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:12,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:12,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:12,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:12,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:12,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:12,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:12,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (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 03:15:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 03:15:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:15:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:13,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:13,754 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-25 03:15:13,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:13 BoogieIcfgContainer [2020-09-25 03:15:13,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:13,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:13,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:13,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:13,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:12" (1/3) ... [2020-09-25 03:15:13,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77088778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:13, skipping insertion in model container [2020-09-25 03:15:13,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12" (2/3) ... [2020-09-25 03:15:13,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77088778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:13, skipping insertion in model container [2020-09-25 03:15:13,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:13" (3/3) ... [2020-09-25 03:15:13,772 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-25 03:15:13,786 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:13,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-25 03:15:13,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-25 03:15:13,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:13,856 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:13,856 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:13,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:13,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:13,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:13,857 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:13,857 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-25 03:15:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 03:15:13,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:13,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:13,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-25 03:15:13,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:13,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033377740] [2020-09-25 03:15:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:14,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:14,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 03:15:14,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 03:15:14,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:15:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:15:14,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 03:15:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:14,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:14,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:15:14,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:14,456 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 03:15:14,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033377740] [2020-09-25 03:15:14,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:14,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:15:14,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554382980] [2020-09-25 03:15:14,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:15:14,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:14,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:15:14,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:14,496 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-25 03:15:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:15,000 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-25 03:15:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:15:15,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 03:15:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:15,020 INFO L225 Difference]: With dead ends: 360 [2020-09-25 03:15:15,020 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 03:15:15,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 03:15:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-25 03:15:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 03:15:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-25 03:15:15,116 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-25 03:15:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:15,117 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-25 03:15:15,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:15:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-25 03:15:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:15:15,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:15,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:15,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:15,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:15,120 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-25 03:15:15,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:15,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065792221] [2020-09-25 03:15:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:15:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 03:15:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:15:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:15:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:15:15,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:15:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:15,554 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 03:15:15,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065792221] [2020-09-25 03:15:15,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:15,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:15,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825057093] [2020-09-25 03:15:15,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:15,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:15,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:15,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:15,559 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 6 states. [2020-09-25 03:15:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:16,053 INFO L93 Difference]: Finished difference Result 397 states and 422 transitions. [2020-09-25 03:15:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:15:16,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 03:15:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:16,059 INFO L225 Difference]: With dead ends: 397 [2020-09-25 03:15:16,059 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 03:15:16,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:15:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 03:15:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2020-09-25 03:15:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 03:15:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2020-09-25 03:15:16,096 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 24 [2020-09-25 03:15:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:16,096 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2020-09-25 03:15:16,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2020-09-25 03:15:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 03:15:16,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:16,097 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] [2020-09-25 03:15:16,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:16,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:16,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:16,098 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-25 03:15:16,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:16,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954929739] [2020-09-25 03:15:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:15:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 03:15:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:15:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:15:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:16,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:16,539 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 03:15:16,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954929739] [2020-09-25 03:15:16,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:16,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:16,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484778443] [2020-09-25 03:15:16,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:16,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:16,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:16,542 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand 6 states. [2020-09-25 03:15:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:16,969 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2020-09-25 03:15:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:15:16,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-25 03:15:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:16,972 INFO L225 Difference]: With dead ends: 264 [2020-09-25 03:15:16,972 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 03:15:16,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:15:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 03:15:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2020-09-25 03:15:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-25 03:15:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2020-09-25 03:15:17,002 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 26 [2020-09-25 03:15:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:17,003 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2020-09-25 03:15:17,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2020-09-25 03:15:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:15:17,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:17,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:17,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:17,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash -111525919, now seen corresponding path program 1 times [2020-09-25 03:15:17,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:17,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623964476] [2020-09-25 03:15:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:17,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:15:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-09-25 03:15:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:15:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:15:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:18,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:18,591 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 03:15:18,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623964476] [2020-09-25 03:15:18,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:18,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 03:15:18,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115400811] [2020-09-25 03:15:18,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:15:18,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:18,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:15:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:18,599 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand 12 states. [2020-09-25 03:15:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:19,910 INFO L93 Difference]: Finished difference Result 546 states and 579 transitions. [2020-09-25 03:15:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:15:19,911 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-09-25 03:15:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:19,914 INFO L225 Difference]: With dead ends: 546 [2020-09-25 03:15:19,915 INFO L226 Difference]: Without dead ends: 410 [2020-09-25 03:15:19,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:15:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-25 03:15:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 162. [2020-09-25 03:15:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 03:15:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-09-25 03:15:19,961 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-09-25 03:15:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:19,961 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-09-25 03:15:19,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:15:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-09-25 03:15:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:15:19,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:19,964 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] [2020-09-25 03:15:19,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:15:19,965 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-25 03:15:19,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:19,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163589194] [2020-09-25 03:15:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:15:20,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:20,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 03:15:20,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:15:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:20,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:15:20,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:20,320 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 03:15:20,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163589194] [2020-09-25 03:15:20,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:20,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:20,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358556542] [2020-09-25 03:15:20,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:20,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:20,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:20,322 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 6 states. [2020-09-25 03:15:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:20,666 INFO L93 Difference]: Finished difference Result 271 states and 287 transitions. [2020-09-25 03:15:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:15:20,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 03:15:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:20,670 INFO L225 Difference]: With dead ends: 271 [2020-09-25 03:15:20,671 INFO L226 Difference]: Without dead ends: 239 [2020-09-25 03:15:20,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:15:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-25 03:15:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-09-25 03:15:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-25 03:15:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-09-25 03:15:20,682 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 34 [2020-09-25 03:15:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:20,683 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-09-25 03:15:20,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-09-25 03:15:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:15:20,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:20,687 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 03:15:20,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:15:20,687 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:20,687 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-25 03:15:20,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:20,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498080226] [2020-09-25 03:15:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:15:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 03:15:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:15:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 03:15:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:15:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:20,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:15:20,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:21,003 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 03:15:21,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498080226] [2020-09-25 03:15:21,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:21,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:15:21,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103832451] [2020-09-25 03:15:21,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:21,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:21,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:21,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:21,006 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 7 states. [2020-09-25 03:15:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:21,643 INFO L93 Difference]: Finished difference Result 245 states and 260 transitions. [2020-09-25 03:15:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:15:21,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 03:15:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:21,648 INFO L225 Difference]: With dead ends: 245 [2020-09-25 03:15:21,648 INFO L226 Difference]: Without dead ends: 241 [2020-09-25 03:15:21,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:15:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-25 03:15:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-25 03:15:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 03:15:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-09-25 03:15:21,657 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 38 [2020-09-25 03:15:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:21,658 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-09-25 03:15:21,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-09-25 03:15:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 03:15:21,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:21,664 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] [2020-09-25 03:15:21,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:15:21,665 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-25 03:15:21,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:21,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493382062] [2020-09-25 03:15:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:21,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:21,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:15:21,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:15:21,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 03:15:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:15:21,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:21,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:15:21,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:21,801 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 03:15:21,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493382062] [2020-09-25 03:15:21,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:21,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:15:21,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473648637] [2020-09-25 03:15:21,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:15:21,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:15:21,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:21,804 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 4 states. [2020-09-25 03:15:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:22,041 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2020-09-25 03:15:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:15:22,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-25 03:15:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:22,044 INFO L225 Difference]: With dead ends: 199 [2020-09-25 03:15:22,044 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 03:15:22,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 03:15:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-25 03:15:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 03:15:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-25 03:15:22,051 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 42 [2020-09-25 03:15:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:22,052 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-25 03:15:22,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:15:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-25 03:15:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 03:15:22,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:22,053 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] [2020-09-25 03:15:22,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:15:22,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:22,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-25 03:15:22,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:22,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296928337] [2020-09-25 03:15:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:22,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 03:15:22,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:15:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-09-25 03:15:22,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:15:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:15:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 03:15:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:22,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:22,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:22,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:22,929 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 03:15:22,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296928337] [2020-09-25 03:15:22,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:22,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:15:22,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325877325] [2020-09-25 03:15:22,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:22,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:22,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:22,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:22,932 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 7 states. [2020-09-25 03:15:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:23,647 INFO L93 Difference]: Finished difference Result 358 states and 384 transitions. [2020-09-25 03:15:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:15:23,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-09-25 03:15:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:23,649 INFO L225 Difference]: With dead ends: 358 [2020-09-25 03:15:23,650 INFO L226 Difference]: Without dead ends: 285 [2020-09-25 03:15:23,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-25 03:15:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 178. [2020-09-25 03:15:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 03:15:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2020-09-25 03:15:23,659 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 44 [2020-09-25 03:15:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:23,660 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2020-09-25 03:15:23,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2020-09-25 03:15:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 03:15:23,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:23,662 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] [2020-09-25 03:15:23,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:15:23,662 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash -992267866, now seen corresponding path program 1 times [2020-09-25 03:15:23,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:23,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141607090] [2020-09-25 03:15:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:25,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:25,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:15:25,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:15:25,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-09-25 03:15:25,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:25,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:15:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:15:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:25,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:25,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:25,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:25,268 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 03:15:25,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141607090] [2020-09-25 03:15:25,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:25,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 03:15:25,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307627081] [2020-09-25 03:15:25,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:15:25,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:25,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:15:25,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:15:25,271 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand 13 states. [2020-09-25 03:15:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:26,634 INFO L93 Difference]: Finished difference Result 554 states and 594 transitions. [2020-09-25 03:15:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:15:26,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-09-25 03:15:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:26,639 INFO L225 Difference]: With dead ends: 554 [2020-09-25 03:15:26,639 INFO L226 Difference]: Without dead ends: 481 [2020-09-25 03:15:26,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-25 03:15:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-09-25 03:15:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 195. [2020-09-25 03:15:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 03:15:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 208 transitions. [2020-09-25 03:15:26,652 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 208 transitions. Word has length 49 [2020-09-25 03:15:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:26,652 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 208 transitions. [2020-09-25 03:15:26,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:15:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 208 transitions. [2020-09-25 03:15:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:15:26,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:26,654 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] [2020-09-25 03:15:26,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:15:26,654 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:26,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-25 03:15:26,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:26,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438047005] [2020-09-25 03:15:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:26,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:26,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:15:26,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 03:15:26,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 03:15:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:15:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:15:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:26,925 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 03:15:26,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438047005] [2020-09-25 03:15:26,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:26,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:26,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469069791] [2020-09-25 03:15:26,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:26,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:26,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:26,927 INFO L87 Difference]: Start difference. First operand 195 states and 208 transitions. Second operand 6 states. [2020-09-25 03:15:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:27,334 INFO L93 Difference]: Finished difference Result 339 states and 363 transitions. [2020-09-25 03:15:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:15:27,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 03:15:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:27,341 INFO L225 Difference]: With dead ends: 339 [2020-09-25 03:15:27,341 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 03:15:27,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:15:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 03:15:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 198. [2020-09-25 03:15:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 03:15:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 211 transitions. [2020-09-25 03:15:27,353 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 211 transitions. Word has length 52 [2020-09-25 03:15:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:27,355 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 211 transitions. [2020-09-25 03:15:27,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 211 transitions. [2020-09-25 03:15:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:15:27,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:27,356 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] [2020-09-25 03:15:27,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:15:27,357 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-25 03:15:27,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:27,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419437668] [2020-09-25 03:15:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:30,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:30,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:15:30,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:15:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2819 [2020-09-25 03:15:30,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:15:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:15:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:30,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:30,694 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 03:15:30,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419437668] [2020-09-25 03:15:30,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:30,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 03:15:30,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938169778] [2020-09-25 03:15:30,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:15:30,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:30,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:15:30,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:15:30,697 INFO L87 Difference]: Start difference. First operand 198 states and 211 transitions. Second operand 14 states. [2020-09-25 03:15:31,754 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-25 03:15:31,954 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-25 03:15:32,125 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-25 03:15:32,497 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 03:15:33,142 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-25 03:15:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:33,855 INFO L93 Difference]: Finished difference Result 683 states and 729 transitions. [2020-09-25 03:15:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 03:15:33,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-25 03:15:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:33,864 INFO L225 Difference]: With dead ends: 683 [2020-09-25 03:15:33,864 INFO L226 Difference]: Without dead ends: 680 [2020-09-25 03:15:33,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 03:15:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-09-25 03:15:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 201. [2020-09-25 03:15:33,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-25 03:15:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 214 transitions. [2020-09-25 03:15:33,882 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 214 transitions. Word has length 53 [2020-09-25 03:15:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:33,883 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 214 transitions. [2020-09-25 03:15:33,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:15:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 214 transitions. [2020-09-25 03:15:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:15:33,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:33,884 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] [2020-09-25 03:15:33,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:15:33,885 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-09-25 03:15:33,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:33,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233230033] [2020-09-25 03:15:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:35,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:35,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:15:35,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:15:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-09-25 03:15:35,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:35,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:15:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:15:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:36,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:36,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:36,075 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 03:15:36,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233230033] [2020-09-25 03:15:36,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:36,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:36,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109662178] [2020-09-25 03:15:36,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:36,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:36,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:36,077 INFO L87 Difference]: Start difference. First operand 201 states and 214 transitions. Second operand 6 states. [2020-09-25 03:15:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:36,551 INFO L93 Difference]: Finished difference Result 290 states and 310 transitions. [2020-09-25 03:15:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:15:36,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 03:15:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:36,554 INFO L225 Difference]: With dead ends: 290 [2020-09-25 03:15:36,554 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 03:15:36,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:15:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 03:15:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 239. [2020-09-25 03:15:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 03:15:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 261 transitions. [2020-09-25 03:15:36,566 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 261 transitions. Word has length 53 [2020-09-25 03:15:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:36,566 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 261 transitions. [2020-09-25 03:15:36,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 261 transitions. [2020-09-25 03:15:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 03:15:36,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:36,568 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] [2020-09-25 03:15:36,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:15:36,568 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:36,568 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-25 03:15:36,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:36,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857841593] [2020-09-25 03:15:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:36,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:36,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:15:36,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-25 03:15:36,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 03:15:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:15:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:15:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:36,956 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 03:15:36,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857841593] [2020-09-25 03:15:36,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:36,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:36,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805533321] [2020-09-25 03:15:36,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:36,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:36,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:36,959 INFO L87 Difference]: Start difference. First operand 239 states and 261 transitions. Second operand 6 states. [2020-09-25 03:15:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:37,400 INFO L93 Difference]: Finished difference Result 261 states and 285 transitions. [2020-09-25 03:15:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:15:37,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 03:15:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:37,403 INFO L225 Difference]: With dead ends: 261 [2020-09-25 03:15:37,403 INFO L226 Difference]: Without dead ends: 256 [2020-09-25 03:15:37,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:15:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-25 03:15:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 242. [2020-09-25 03:15:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-25 03:15:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 264 transitions. [2020-09-25 03:15:37,416 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 264 transitions. Word has length 54 [2020-09-25 03:15:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:37,416 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 264 transitions. [2020-09-25 03:15:37,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 264 transitions. [2020-09-25 03:15:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:15:37,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:37,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:37,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:15:37,418 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:37,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1897380797, now seen corresponding path program 1 times [2020-09-25 03:15:37,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:37,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3931206] [2020-09-25 03:15:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:37,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:15:37,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 03:15:37,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:15:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:15:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 03:15:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:37,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:37,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:37,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3931206] [2020-09-25 03:15:37,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:37,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:15:37,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85229128] [2020-09-25 03:15:37,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:37,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:37,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:37,907 INFO L87 Difference]: Start difference. First operand 242 states and 264 transitions. Second operand 7 states. [2020-09-25 03:15:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:38,517 INFO L93 Difference]: Finished difference Result 399 states and 433 transitions. [2020-09-25 03:15:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:15:38,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-09-25 03:15:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:38,519 INFO L225 Difference]: With dead ends: 399 [2020-09-25 03:15:38,519 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 03:15:38,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:15:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 03:15:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 242. [2020-09-25 03:15:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-25 03:15:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 262 transitions. [2020-09-25 03:15:38,531 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 262 transitions. Word has length 55 [2020-09-25 03:15:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:38,532 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 262 transitions. [2020-09-25 03:15:38,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 262 transitions. [2020-09-25 03:15:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 03:15:38,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:38,533 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] [2020-09-25 03:15:38,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:15:38,533 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:38,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-25 03:15:38,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:38,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317239321] [2020-09-25 03:15:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:42,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:42,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 03:15:42,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:15:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3634 [2020-09-25 03:15:42,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:15:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 03:15:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:15:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:42,759 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 03:15:42,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317239321] [2020-09-25 03:15:42,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:42,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 03:15:42,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286954358] [2020-09-25 03:15:42,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:15:42,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:42,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:15:42,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:15:42,762 INFO L87 Difference]: Start difference. First operand 242 states and 262 transitions. Second operand 15 states. [2020-09-25 03:15:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:45,015 INFO L93 Difference]: Finished difference Result 458 states and 485 transitions. [2020-09-25 03:15:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:15:45,016 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-25 03:15:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:45,019 INFO L225 Difference]: With dead ends: 458 [2020-09-25 03:15:45,019 INFO L226 Difference]: Without dead ends: 455 [2020-09-25 03:15:45,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:15:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-09-25 03:15:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 246. [2020-09-25 03:15:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-25 03:15:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 266 transitions. [2020-09-25 03:15:45,032 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 266 transitions. Word has length 57 [2020-09-25 03:15:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:45,033 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 266 transitions. [2020-09-25 03:15:45,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:15:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 266 transitions. [2020-09-25 03:15:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 03:15:45,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:45,036 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] [2020-09-25 03:15:45,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:15:45,037 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:45,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2093992957, now seen corresponding path program 1 times [2020-09-25 03:15:45,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:45,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416074353] [2020-09-25 03:15:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:46,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:15:46,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-09-25 03:15:46,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:15:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 03:15:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:15:46,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:46,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:46,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:46,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:46,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:46,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:46,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:46,679 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 03:15:46,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416074353] [2020-09-25 03:15:46,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:46,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 03:15:46,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955059435] [2020-09-25 03:15:46,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:15:46,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:46,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:15:46,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:15:46,682 INFO L87 Difference]: Start difference. First operand 246 states and 266 transitions. Second operand 14 states. [2020-09-25 03:15:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:48,040 INFO L93 Difference]: Finished difference Result 422 states and 449 transitions. [2020-09-25 03:15:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:15:48,040 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-25 03:15:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:48,042 INFO L225 Difference]: With dead ends: 422 [2020-09-25 03:15:48,043 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 03:15:48,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:15:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 03:15:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2020-09-25 03:15:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 03:15:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 257 transitions. [2020-09-25 03:15:48,055 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 257 transitions. Word has length 61 [2020-09-25 03:15:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:48,055 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 257 transitions. [2020-09-25 03:15:48,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:15:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 257 transitions. [2020-09-25 03:15:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 03:15:48,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:48,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:48,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:15:48,057 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:48,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:48,058 INFO L82 PathProgramCache]: Analyzing trace with hash -30666707, now seen corresponding path program 1 times [2020-09-25 03:15:48,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:48,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373321260] [2020-09-25 03:15:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:15:49,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:15:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-09-25 03:15:49,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:15:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:15:49,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 03:15:49,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:49,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:15:49,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373321260] [2020-09-25 03:15:49,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:49,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:15:49,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840235927] [2020-09-25 03:15:49,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:49,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:49,169 INFO L87 Difference]: Start difference. First operand 238 states and 257 transitions. Second operand 7 states. [2020-09-25 03:15:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:49,643 INFO L93 Difference]: Finished difference Result 315 states and 332 transitions. [2020-09-25 03:15:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:15:49,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-09-25 03:15:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:49,645 INFO L225 Difference]: With dead ends: 315 [2020-09-25 03:15:49,646 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 03:15:49,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:15:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 03:15:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 229. [2020-09-25 03:15:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 03:15:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 249 transitions. [2020-09-25 03:15:49,657 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 249 transitions. Word has length 63 [2020-09-25 03:15:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:49,657 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 249 transitions. [2020-09-25 03:15:49,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 249 transitions. [2020-09-25 03:15:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 03:15:49,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:49,658 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] [2020-09-25 03:15:49,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:15:49,659 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:49,659 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-25 03:15:49,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:49,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771290182] [2020-09-25 03:15:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:15:49,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:49,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 03:15:49,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 03:15:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:15:49,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:49,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:49,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:15:49,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:49,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771290182] [2020-09-25 03:15:49,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:49,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:15:49,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720702740] [2020-09-25 03:15:49,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:15:49,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:15:49,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:49,882 INFO L87 Difference]: Start difference. First operand 229 states and 249 transitions. Second operand 4 states. [2020-09-25 03:15:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:50,135 INFO L93 Difference]: Finished difference Result 284 states and 314 transitions. [2020-09-25 03:15:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:15:50,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 03:15:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:50,138 INFO L225 Difference]: With dead ends: 284 [2020-09-25 03:15:50,138 INFO L226 Difference]: Without dead ends: 282 [2020-09-25 03:15:50,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-25 03:15:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 267. [2020-09-25 03:15:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 03:15:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 296 transitions. [2020-09-25 03:15:50,159 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 296 transitions. Word has length 64 [2020-09-25 03:15:50,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:50,159 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 296 transitions. [2020-09-25 03:15:50,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:15:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 296 transitions. [2020-09-25 03:15:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 03:15:50,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:50,165 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] [2020-09-25 03:15:50,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:15:50,166 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:50,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-25 03:15:50,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:50,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53255845] [2020-09-25 03:15:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:50,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:15:50,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 03:15:50,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 03:15:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:15:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:50,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:15:50,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:50,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53255845] [2020-09-25 03:15:50,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:50,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:15:50,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031673905] [2020-09-25 03:15:50,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:15:50,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:15:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:50,351 INFO L87 Difference]: Start difference. First operand 267 states and 296 transitions. Second operand 4 states. [2020-09-25 03:15:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:50,607 INFO L93 Difference]: Finished difference Result 449 states and 506 transitions. [2020-09-25 03:15:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:15:50,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 03:15:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:50,611 INFO L225 Difference]: With dead ends: 449 [2020-09-25 03:15:50,611 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 03:15:50,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 03:15:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 260. [2020-09-25 03:15:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-25 03:15:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 289 transitions. [2020-09-25 03:15:50,636 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 289 transitions. Word has length 64 [2020-09-25 03:15:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:50,636 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 289 transitions. [2020-09-25 03:15:50,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:15:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 289 transitions. [2020-09-25 03:15:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 03:15:50,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:50,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:50,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 03:15:50,641 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1195080616, now seen corresponding path program 1 times [2020-09-25 03:15:50,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:50,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660225241] [2020-09-25 03:15:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:55,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:55,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:15:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:15:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4766 [2020-09-25 03:15:55,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:15:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:15:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:55,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:55,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:55,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:56,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660225241] [2020-09-25 03:15:56,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:56,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:15:56,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786425055] [2020-09-25 03:15:56,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:15:56,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:56,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:15:56,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:15:56,009 INFO L87 Difference]: Start difference. First operand 260 states and 289 transitions. Second operand 15 states. [2020-09-25 03:15:56,810 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-09-25 03:15:57,119 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-25 03:15:57,330 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-25 03:15:57,509 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-25 03:15:57,983 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-25 03:15:58,160 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-25 03:15:58,320 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-25 03:15:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:59,209 INFO L93 Difference]: Finished difference Result 671 states and 729 transitions. [2020-09-25 03:15:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 03:15:59,210 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-09-25 03:15:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:59,213 INFO L225 Difference]: With dead ends: 671 [2020-09-25 03:15:59,214 INFO L226 Difference]: Without dead ends: 597 [2020-09-25 03:15:59,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 03:15:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-09-25 03:15:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 267. [2020-09-25 03:15:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 03:15:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2020-09-25 03:15:59,235 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 66 [2020-09-25 03:15:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:59,236 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2020-09-25 03:15:59,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:15:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2020-09-25 03:15:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:15:59,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:59,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:59,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 03:15:59,238 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:59,238 INFO L82 PathProgramCache]: Analyzing trace with hash -594402434, now seen corresponding path program 1 times [2020-09-25 03:15:59,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:59,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241443542] [2020-09-25 03:15:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:59,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:15:59,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:15:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 03:15:59,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 03:15:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:15:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:59,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:59,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241443542] [2020-09-25 03:15:59,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:59,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:15:59,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625227476] [2020-09-25 03:15:59,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:15:59,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:59,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:15:59,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:59,531 INFO L87 Difference]: Start difference. First operand 267 states and 297 transitions. Second operand 4 states. [2020-09-25 03:15:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:59,765 INFO L93 Difference]: Finished difference Result 434 states and 487 transitions. [2020-09-25 03:15:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:15:59,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-09-25 03:15:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:59,768 INFO L225 Difference]: With dead ends: 434 [2020-09-25 03:15:59,768 INFO L226 Difference]: Without dead ends: 289 [2020-09-25 03:15:59,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-25 03:15:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2020-09-25 03:15:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 03:15:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2020-09-25 03:15:59,787 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 69 [2020-09-25 03:15:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:59,788 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2020-09-25 03:15:59,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:15:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2020-09-25 03:15:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:15:59,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:59,789 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:59,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 03:15:59,790 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:59,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:59,790 INFO L82 PathProgramCache]: Analyzing trace with hash -594310178, now seen corresponding path program 1 times [2020-09-25 03:15:59,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:59,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183053225] [2020-09-25 03:15:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:59,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:15:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 03:15:59,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 03:15:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:15:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:15:59,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183053225] [2020-09-25 03:15:59,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:59,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:15:59,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762747702] [2020-09-25 03:15:59,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:15:59,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:59,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:15:59,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:15:59,981 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand 4 states. [2020-09-25 03:16:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:00,228 INFO L93 Difference]: Finished difference Result 252 states and 276 transitions. [2020-09-25 03:16:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:16:00,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-09-25 03:16:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:00,231 INFO L225 Difference]: With dead ends: 252 [2020-09-25 03:16:00,231 INFO L226 Difference]: Without dead ends: 250 [2020-09-25 03:16:00,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:16:00,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-25 03:16:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-09-25 03:16:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-09-25 03:16:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 272 transitions. [2020-09-25 03:16:00,243 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 272 transitions. Word has length 69 [2020-09-25 03:16:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:00,245 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 272 transitions. [2020-09-25 03:16:00,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:16:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 272 transitions. [2020-09-25 03:16:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 03:16:00,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:00,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:00,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 03:16:00,247 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:00,247 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-25 03:16:00,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:00,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105504314] [2020-09-25 03:16:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:16:00,266 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:16:00,266 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:16:00,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 03:16:00,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:16:00 BoogieIcfgContainer [2020-09-25 03:16:00,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:16:00,297 INFO L168 Benchmark]: Toolchain (without parser) took 48194.62 ms. Allocated memory was 140.0 MB in the beginning and 460.3 MB in the end (delta: 320.3 MB). Free memory was 102.4 MB in the beginning and 373.7 MB in the end (delta: -271.3 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:16:00,297 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 03:16:00,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.54 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.6 MB in the beginning and 172.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:16:00,299 INFO L168 Benchmark]: Boogie Preprocessor took 91.08 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:16:00,299 INFO L168 Benchmark]: RCFGBuilder took 823.67 ms. Allocated memory is still 205.5 MB. Free memory was 168.2 MB in the beginning and 105.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:16:00,300 INFO L168 Benchmark]: TraceAbstraction took 46532.55 ms. Allocated memory was 205.5 MB in the beginning and 460.3 MB in the end (delta: 254.8 MB). Free memory was 104.9 MB in the beginning and 373.7 MB in the end (delta: -268.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:16:00,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.54 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.6 MB in the beginning and 172.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.08 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 823.67 ms. Allocated memory is still 205.5 MB. Free memory was 168.2 MB in the beginning and 105.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46532.55 ms. Allocated memory was 205.5 MB in the beginning and 460.3 MB in the end (delta: 254.8 MB). Free memory was 104.9 MB in the beginning and 373.7 MB in the end (delta: -268.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.4s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3935 SDtfs, 7157 SDslu, 15513 SDs, 0 SdLazy, 9120 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 2347 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 1155 NumberOfCodeBlocks, 1155 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1060 ConstructedInterpolants, 0 QuantifiedInterpolants, 488918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 19 PerfectInterpolantSequences, 23/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...