/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:09:53,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:09:53,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:09:53,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:09:53,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:09:53,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:09:53,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:09:53,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:09:53,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:09:53,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:09:53,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:09:53,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:09:53,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:09:53,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:09:53,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:09:53,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:09:53,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:09:53,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:09:53,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:09:53,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:09:53,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:09:53,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:09:53,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:09:53,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:09:53,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:09:53,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:09:53,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:09:53,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:09:53,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:09:53,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:09:53,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:09:53,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:09:53,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:09:53,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:09:53,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:09:53,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:09:53,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:09:53,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:09:53,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:09:53,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:09:53,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:09:53,486 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 [2020-09-21 11:09:53,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:09:53,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:09:53,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:09:53,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:09:53,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:09:53,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:09:53,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:09:53,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:09:53,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:09:53,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:09:53,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:09:53,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:09:53,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:09:53,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:09:53,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:09:53,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:09:53,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:09:53,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:09:53,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:09:53,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:09:53,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:09:53,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:09:53,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:09:53,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:09:53,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:09:53,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:09:53,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:09:53,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:09:53,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:09:53,549 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:09:53,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:09:54,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:09:54,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:09:54,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:09:54,024 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:09:54,025 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-09-21 11:09:54,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0307495cf/df909a0b77b44db2a46d3512df2253f2/FLAGca06857d4 [2020-09-21 11:09:54,740 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:09:54,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-09-21 11:09:54,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0307495cf/df909a0b77b44db2a46d3512df2253f2/FLAGca06857d4 [2020-09-21 11:09:55,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0307495cf/df909a0b77b44db2a46d3512df2253f2 [2020-09-21 11:09:55,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:09:55,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:09:55,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:09:55,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:09:55,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:09:55,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55, skipping insertion in model container [2020-09-21 11:09:55,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:09:55,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:09:55,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:09:55,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:09:55,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:09:55,755 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:09:55,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55 WrapperNode [2020-09-21 11:09:55,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:09:55,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:09:55,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:09:55,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:09:55,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (1/1) ... [2020-09-21 11:09:55,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:09:55,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:09:55,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:09:55,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:09:55,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (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 [2020-09-21 11:09:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:09:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:09:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:09:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:09:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:09:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:09:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:09:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:09:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:09:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:09:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:09:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:09:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:09:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:09:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:09:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:09:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:09:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:09:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:09:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:09:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:09:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:09:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:09:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:09:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:09:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:09:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:09:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:09:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:09:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:09:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:09:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:09:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:09:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:09:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:09:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:09:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:09:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:09:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:09:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:09:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:09:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:09:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:09:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:09:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:09:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:09:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:09:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:09:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:09:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:09:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:09:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:09:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:09:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:09:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:09:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:09:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:09:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:09:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:09:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:09:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:09:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:09:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:09:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:09:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:09:57,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:09:57,107 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:09:57,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:09:57 BoogieIcfgContainer [2020-09-21 11:09:57,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:09:57,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:09:57,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:09:57,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:09:57,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:09:55" (1/3) ... [2020-09-21 11:09:57,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df78c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:09:57, skipping insertion in model container [2020-09-21 11:09:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:55" (2/3) ... [2020-09-21 11:09:57,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df78c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:09:57, skipping insertion in model container [2020-09-21 11:09:57,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:09:57" (3/3) ... [2020-09-21 11:09:57,123 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-09-21 11:09:57,135 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:09:57,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:09:57,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:09:57,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:09:57,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:09:57,204 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:09:57,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:09:57,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:09:57,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:09:57,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:09:57,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:09:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-21 11:09:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:09:57,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:09:57,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:09:57,247 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:09:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:09:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-09-21 11:09:57,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:09:57,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083591235] [2020-09-21 11:09:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:09:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:57,593 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:57,593 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:57,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:57,594 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:09:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:09:57,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:09:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,034 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:09:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:09:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,053 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,054 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:09:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:09:58,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:09:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:09:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,131 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,134 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,134 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,135 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:09:58,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:09:58,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:09:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:09:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,141 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,141 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,141 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:09:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:09:58,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:09:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:09:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,148 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,149 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,149 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:09:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:09:58,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:09:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:09:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,157 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,157 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,158 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:09:58,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:09:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:09:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:09:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:09:58,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:09:58,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:09:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:09:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,173 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:09:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:09:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:09:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:09:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:58,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:58,181 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:58,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:58,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:58,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:09:58,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:09:58,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:09:58,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:09:58,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:09:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:09:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:09:58,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083591235] [2020-09-21 11:09:58,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:09:58,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:09:58,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732023897] [2020-09-21 11:09:58,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:09:58,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:09:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:09:58,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:09:58,233 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-09-21 11:09:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:09:59,397 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-09-21 11:09:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:09:59,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:09:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:09:59,425 INFO L225 Difference]: With dead ends: 282 [2020-09-21 11:09:59,425 INFO L226 Difference]: Without dead ends: 153 [2020-09-21 11:09:59,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:09:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-21 11:09:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-09-21 11:09:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 11:09:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-09-21 11:09:59,625 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-09-21 11:09:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:09:59,626 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-09-21 11:09:59,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:09:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-09-21 11:09:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:09:59,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:09:59,640 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] [2020-09-21 11:09:59,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:09:59,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:09:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:09:59,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-09-21 11:09:59,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:09:59,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688308313] [2020-09-21 11:09:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:09:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:09:59,745 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:09:59,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:09:59,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:09:59,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:09:59,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:09:59,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:09:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:09:59,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:09:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:09:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:09:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:09:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,067 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,077 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,118 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,119 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,119 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:00,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:00,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,129 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,135 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,136 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:00,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,141 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,141 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,141 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:00,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,147 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:00,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,153 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,153 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,154 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:00,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688308313] [2020-09-21 11:10:00,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:00,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:00,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729426299] [2020-09-21 11:10:00,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:00,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:00,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:00,167 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-09-21 11:10:00,667 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:01,488 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-09-21 11:10:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:01,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:01,497 INFO L225 Difference]: With dead ends: 205 [2020-09-21 11:10:01,497 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 11:10:01,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 11:10:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-09-21 11:10:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-21 11:10:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-09-21 11:10:01,545 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-09-21 11:10:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:01,545 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-09-21 11:10:01,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-09-21 11:10:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:10:01,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:01,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:01,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:01,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:01,548 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-09-21 11:10:01,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:01,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240870024] [2020-09-21 11:10:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,957 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:01,957 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,957 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,958 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-21 11:10:01,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-21 11:10:01,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:10:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:10:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,332 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:02,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,396 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,397 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 11:10:02,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,437 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:02,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:02,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:02,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,448 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,448 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:02,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,456 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,456 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,457 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,461 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,461 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,461 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,466 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 11:10:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,471 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,471 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,471 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,471 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:02,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:02,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:02,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:02,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240870024] [2020-09-21 11:10:02,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:02,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:02,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788954141] [2020-09-21 11:10:02,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:02,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:02,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:02,484 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 4 states. [2020-09-21 11:10:02,800 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:04,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:04,267 INFO L93 Difference]: Finished difference Result 321 states and 394 transitions. [2020-09-21 11:10:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:04,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-21 11:10:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:04,272 INFO L225 Difference]: With dead ends: 321 [2020-09-21 11:10:04,272 INFO L226 Difference]: Without dead ends: 234 [2020-09-21 11:10:04,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-21 11:10:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 188. [2020-09-21 11:10:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-21 11:10:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 223 transitions. [2020-09-21 11:10:04,335 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 223 transitions. Word has length 58 [2020-09-21 11:10:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:04,336 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 223 transitions. [2020-09-21 11:10:04,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 223 transitions. [2020-09-21 11:10:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 11:10:04,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:04,338 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] [2020-09-21 11:10:04,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:04,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:04,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-09-21 11:10:04,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:04,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425448143] [2020-09-21 11:10:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:04,826 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:04,826 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:04,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:04,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:10:04,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-21 11:10:04,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:10:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,261 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,337 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:10:05,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,383 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,384 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,384 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:05,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,397 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,397 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,398 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,406 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,407 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:05,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:10:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,444 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,445 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,445 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,446 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,456 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,456 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,457 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:10:05,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 11:10:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,481 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,481 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,482 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:05,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:05,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425448143] [2020-09-21 11:10:05,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:05,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:05,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297315460] [2020-09-21 11:10:05,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:05,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:05,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:05,510 INFO L87 Difference]: Start difference. First operand 188 states and 223 transitions. Second operand 8 states. [2020-09-21 11:10:06,103 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:07,551 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:07,951 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:08,282 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:08,616 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:09,336 INFO L93 Difference]: Finished difference Result 579 states and 754 transitions. [2020-09-21 11:10:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:09,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-21 11:10:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:09,343 INFO L225 Difference]: With dead ends: 579 [2020-09-21 11:10:09,343 INFO L226 Difference]: Without dead ends: 415 [2020-09-21 11:10:09,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-09-21 11:10:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 351. [2020-09-21 11:10:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-09-21 11:10:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 427 transitions. [2020-09-21 11:10:09,446 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 427 transitions. Word has length 63 [2020-09-21 11:10:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:09,447 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 427 transitions. [2020-09-21 11:10:09,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 427 transitions. [2020-09-21 11:10:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:09,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:09,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:09,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:09,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:09,451 INFO L82 PathProgramCache]: Analyzing trace with hash -572770771, now seen corresponding path program 1 times [2020-09-21 11:10:09,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:09,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48163022] [2020-09-21 11:10:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:09,858 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:09,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:09,859 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:09,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 11:10:09,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-21 11:10:09,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:10:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 11:10:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:10,234 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,300 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,301 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,301 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:10:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,337 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,344 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,345 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,345 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:10,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:10,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:10,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,351 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,352 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,352 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,359 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,360 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:10,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:10,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,377 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,378 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,379 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:10,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:10:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,394 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,394 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:10,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:10:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:10,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:10:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,405 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,405 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,405 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:10,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:10,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 11:10:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:10,410 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:10,410 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:10,411 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:10,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48163022] [2020-09-21 11:10:10,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:10,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:10:10,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240785641] [2020-09-21 11:10:10,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:10:10,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:10,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:10:10,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:10:10,431 INFO L87 Difference]: Start difference. First operand 351 states and 427 transitions. Second operand 6 states. [2020-09-21 11:10:10,893 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:12,158 INFO L93 Difference]: Finished difference Result 614 states and 792 transitions. [2020-09-21 11:10:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:10:12,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-21 11:10:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:12,162 INFO L225 Difference]: With dead ends: 614 [2020-09-21 11:10:12,163 INFO L226 Difference]: Without dead ends: 287 [2020-09-21 11:10:12,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:10:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-21 11:10:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 241. [2020-09-21 11:10:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-21 11:10:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 274 transitions. [2020-09-21 11:10:12,250 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 274 transitions. Word has length 67 [2020-09-21 11:10:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:12,251 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 274 transitions. [2020-09-21 11:10:12,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:10:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 274 transitions. [2020-09-21 11:10:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:12,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:12,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:12,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:12,254 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-09-21 11:10:12,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:12,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254876147] [2020-09-21 11:10:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:12,332 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:12,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:12,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:10:12,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:12 BoogieIcfgContainer [2020-09-21 11:10:12,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:12,370 INFO L168 Benchmark]: Toolchain (without parser) took 17342.95 ms. Allocated memory was 138.9 MB in the beginning and 509.1 MB in the end (delta: 370.1 MB). Free memory was 101.0 MB in the beginning and 336.4 MB in the end (delta: -235.4 MB). Peak memory consumption was 134.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:12,371 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:10:12,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.49 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 171.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:12,373 INFO L168 Benchmark]: Boogie Preprocessor took 98.61 ms. Allocated memory is still 202.9 MB. Free memory was 171.0 MB in the beginning and 166.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:12,374 INFO L168 Benchmark]: RCFGBuilder took 1257.77 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 166.8 MB in the beginning and 198.0 MB in the end (delta: -31.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:12,375 INFO L168 Benchmark]: TraceAbstraction took 15252.84 ms. Allocated memory was 234.4 MB in the beginning and 509.1 MB in the end (delta: 274.7 MB). Free memory was 196.5 MB in the beginning and 336.4 MB in the end (delta: -139.9 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:12,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.49 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 171.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.61 ms. Allocated memory is still 202.9 MB. Free memory was 171.0 MB in the beginning and 166.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1257.77 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 166.8 MB in the beginning and 198.0 MB in the end (delta: -31.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15252.84 ms. Allocated memory was 234.4 MB in the beginning and 509.1 MB in the end (delta: 274.7 MB). Free memory was 196.5 MB in the beginning and 336.4 MB in the end (delta: -139.9 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 691 SDslu, 284 SDs, 0 SdLazy, 1289 SolverSat, 446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 215 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 81576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...