/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:09:56,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:09:56,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:09:56,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:09:56,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:09:56,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:09:56,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:09:56,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:09:56,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:09:56,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:09:56,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:09:56,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:09:56,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:09:56,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:09:56,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:09:56,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:09:56,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:09:56,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:09:56,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:09:56,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:09:56,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:09:56,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:09:56,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:09:56,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:09:56,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:09:56,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:09:56,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:09:56,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:09:56,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:09:56,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:09:56,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:09:56,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:09:56,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:09:56,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:09:56,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:09:56,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:09:56,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:09:56,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:09:56,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:09:56,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:09:56,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:09:56,534 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 11:09:56,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:09:56,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:09:56,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:09:56,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:09:56,561 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:09:56,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:09:56,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:09:56,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:09:56,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:09:56,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:09:56,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:09:56,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:09:56,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:09:56,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:09:56,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:09:56,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:09:56,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:09:56,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:09:56,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:09:56,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:09:56,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:09:56,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:09:56,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:09:56,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:09:56,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:09:56,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:09:56,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:09:56,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:09:56,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:09:56,566 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 11:09:57,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:09:57,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:09:57,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:09:57,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:09:57,047 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:09:57,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-21 11:09:57,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/335c4290e/8fbd603d115e4267b324a258282615b1/FLAGca7a97d5e [2020-09-21 11:09:57,772 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:09:57,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-21 11:09:57,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/335c4290e/8fbd603d115e4267b324a258282615b1/FLAGca7a97d5e [2020-09-21 11:09:58,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/335c4290e/8fbd603d115e4267b324a258282615b1 [2020-09-21 11:09:58,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:09:58,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:09:58,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:09:58,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:09:58,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:09:58,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fd97d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58, skipping insertion in model container [2020-09-21 11:09:58,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:09:58,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:09:58,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:09:58,644 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:09:58,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:09:58,798 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:09:58,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58 WrapperNode [2020-09-21 11:09:58,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:09:58,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:09:58,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:09:58,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:09:58,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:09:58,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:09:58,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:09:58,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:09:58,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (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 11:09:59,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:09:59,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:09:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:09:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:09:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:09:59,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:09:59,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:09:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:09:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:09:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:09:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:09:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 11:09:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:09:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:09:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:09:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:09:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:09:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:09:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:09:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:09:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:09:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:09:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:09:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:09:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:09:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:09:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:09:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:09:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:09:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:09:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:09:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:09:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:09:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:09:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:09:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:09:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:09:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:09:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:09:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:09:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:09:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:09:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:09:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:09:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:09:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:09:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:09:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:09:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:09:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:09:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:09:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:09:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:09:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:09:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:09:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:09:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:09:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:09:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:09:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:09:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:09:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:09:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:09:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:09:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:09:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 11:09:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:09:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:09:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:09:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:09:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:09:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:09:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:09:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:09:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:09:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:09:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:09:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:09:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:09:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:09:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:09:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:09:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:09:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:00,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:00,129 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:00,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:00 BoogieIcfgContainer [2020-09-21 11:10:00,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:00,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:00,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:00,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:00,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:09:58" (1/3) ... [2020-09-21 11:10:00,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa95364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:00, skipping insertion in model container [2020-09-21 11:10:00,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58" (2/3) ... [2020-09-21 11:10:00,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa95364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:00, skipping insertion in model container [2020-09-21 11:10:00,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:00" (3/3) ... [2020-09-21 11:10:00,146 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-09-21 11:10:00,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:00,169 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:00,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:00,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:00,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:00,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:00,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:00,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:00,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:00,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:00,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-09-21 11:10:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:00,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:00,270 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 11:10:00,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-09-21 11:10:00,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:00,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927034720] [2020-09-21 11:10:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:00,597 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:00,598 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:00,598 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:00,598 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:00,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:10:00,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,036 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,053 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,171 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:01,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,178 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,179 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,187 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:01,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,198 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:01,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:01,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,204 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,205 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,205 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,212 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,212 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,220 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,220 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,237 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 11:10:01,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927034720] [2020-09-21 11:10:01,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:01,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:01,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177643888] [2020-09-21 11:10:01,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:01,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:01,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:01,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:01,270 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-09-21 11:10:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:02,502 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-09-21 11:10:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:02,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:02,524 INFO L225 Difference]: With dead ends: 291 [2020-09-21 11:10:02,524 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 11:10:02,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 11:10:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-09-21 11:10:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 11:10:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-09-21 11:10:02,630 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-09-21 11:10:02,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:02,631 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-09-21 11:10:02,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-09-21 11:10:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:02,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:02,636 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 11:10:02,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:02,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-09-21 11:10:02,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:02,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404236773] [2020-09-21 11:10:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:02,705 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:02,706 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:02,706 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:02,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:02,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:02,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:02,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:10:02,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:02,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:02,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,036 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,047 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,047 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,092 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,093 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,093 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,093 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:03,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,098 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,098 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,098 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,104 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,109 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,110 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,110 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,110 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:03,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,115 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,115 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,115 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,121 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,121 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,121 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,121 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,127 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,127 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,128 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,137 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 11:10:03,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404236773] [2020-09-21 11:10:03,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:03,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:03,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289185414] [2020-09-21 11:10:03,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:03,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:03,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:03,141 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-09-21 11:10:03,606 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:04,559 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-09-21 11:10:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:04,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:04,564 INFO L225 Difference]: With dead ends: 224 [2020-09-21 11:10:04,564 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 11:10:04,566 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 11:10:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 11:10:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-09-21 11:10:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-21 11:10:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-09-21 11:10:04,603 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-09-21 11:10:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:04,604 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-09-21 11:10:04,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-09-21 11:10:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:10:04,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:04,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:04,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:04,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times [2020-09-21 11:10:04,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:04,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126181736] [2020-09-21 11:10:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:04,725 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:04,726 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:04,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:04,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:04,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:10:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 11:10:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 11:10:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,070 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:05,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,143 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,143 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:10:05,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,191 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:05,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,198 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,199 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,204 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,210 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:10:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,217 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,218 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,218 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:05,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:05,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,229 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:05,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:05,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,239 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 11:10:05,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126181736] [2020-09-21 11:10:05,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:05,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:05,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309729750] [2020-09-21 11:10:05,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:05,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:05,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:05,242 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-09-21 11:10:05,568 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:06,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:06,525 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-09-21 11:10:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:06,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-21 11:10:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:06,529 INFO L225 Difference]: With dead ends: 233 [2020-09-21 11:10:06,529 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 11:10:06,530 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 11:10:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 11:10:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-09-21 11:10:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-21 11:10:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-09-21 11:10:06,569 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-09-21 11:10:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:06,570 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-09-21 11:10:06,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-09-21 11:10:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 11:10:06,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:06,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:06,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:06,574 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:06,574 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-09-21 11:10:06,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:06,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98321207] [2020-09-21 11:10:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,098 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,099 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,099 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 11:10:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-21 11:10:07,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:10:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,458 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,521 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,521 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,521 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,522 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:07,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:10:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,558 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,558 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,558 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,570 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,571 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,571 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:07,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,577 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,577 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,577 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,577 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:07,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:10:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,597 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,597 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,598 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,598 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:07,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:10:07,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,604 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,604 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,605 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 11:10:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,616 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 11:10:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 11:10:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:07,641 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:07,641 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:07,641 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:07,641 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:07,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:07,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:07,654 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 11:10:07,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98321207] [2020-09-21 11:10:07,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:07,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:07,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815957856] [2020-09-21 11:10:07,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:07,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:07,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:07,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:07,656 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-09-21 11:10:08,108 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:09,992 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:10,355 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:10,680 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:11,154 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:11,573 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-09-21 11:10:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:11,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-21 11:10:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:11,579 INFO L225 Difference]: With dead ends: 348 [2020-09-21 11:10:11,579 INFO L226 Difference]: Without dead ends: 256 [2020-09-21 11:10:11,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 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 11:10:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-21 11:10:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-09-21 11:10:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-21 11:10:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-09-21 11:10:11,644 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-09-21 11:10:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:11,645 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-09-21 11:10:11,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-09-21 11:10:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-21 11:10:11,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:11,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:11,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:11,649 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-09-21 11:10:11,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:11,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106213950] [2020-09-21 11:10:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:11,717 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:11,717 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:11,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:11,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:11 BoogieIcfgContainer [2020-09-21 11:10:11,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:11,753 INFO L168 Benchmark]: Toolchain (without parser) took 13713.96 ms. Allocated memory was 140.0 MB in the beginning and 464.0 MB in the end (delta: 324.0 MB). Free memory was 102.5 MB in the beginning and 226.4 MB in the end (delta: -123.9 MB). Peak memory consumption was 200.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:11,754 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:10:11,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.18 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 172.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:11,756 INFO L168 Benchmark]: Boogie Preprocessor took 101.49 ms. Allocated memory is still 204.5 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:11,757 INFO L168 Benchmark]: RCFGBuilder took 1233.91 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 199.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:11,758 INFO L168 Benchmark]: TraceAbstraction took 11613.71 ms. Allocated memory was 237.5 MB in the beginning and 464.0 MB in the end (delta: 226.5 MB). Free memory was 198.1 MB in the beginning and 226.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 198.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:11,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.18 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 172.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.49 ms. Allocated memory is still 204.5 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1233.91 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 199.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11613.71 ms. Allocated memory was 237.5 MB in the beginning and 464.0 MB in the end (delta: 226.5 MB). Free memory was 198.1 MB in the beginning and 226.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 198.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 436 SDtfs, 562 SDslu, 181 SDs, 0 SdLazy, 1059 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 62928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...