/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:49:05,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:49:05,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:49:05,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:49:05,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:49:05,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:49:05,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:49:05,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:49:05,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:49:05,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:49:05,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:49:05,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:49:05,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:49:05,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:49:05,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:49:05,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:49:05,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:49:05,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:49:05,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:49:05,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:49:05,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:49:05,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:49:05,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:49:05,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:49:05,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:49:05,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:49:05,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:49:05,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:49:05,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:49:05,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:49:05,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:49:05,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:49:05,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:49:05,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:49:05,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:49:05,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:49:05,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:49:05,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:49:05,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:49:05,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:49:05,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:49:05,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:49:05,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:49:05,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:49:05,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:49:05,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:49:05,459 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:49:05,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:49:05,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:49:05,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:49:05,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:49:05,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:49:05,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:49:05,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:49:05,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:49:05,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:49:05,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:49:05,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:49:05,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:49:05,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:49:05,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:49:05,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:49:05,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:49:05,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:49:05,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:49:05,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:49:05,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:49:05,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:49:05,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:49:05,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:49:05,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:49:05,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:49:05,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:49:05,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:49:05,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:49:05,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:49:05,942 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:49:05,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product03.cil.c [2020-09-25 01:49:06,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72f5dea3/429864c810504c48ac3d12383a566064/FLAG8d4888ae2 [2020-09-25 01:49:06,719 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:49:06,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product03.cil.c [2020-09-25 01:49:06,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72f5dea3/429864c810504c48ac3d12383a566064/FLAG8d4888ae2 [2020-09-25 01:49:06,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f72f5dea3/429864c810504c48ac3d12383a566064 [2020-09-25 01:49:07,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:49:07,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:49:07,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:49:07,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:49:07,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:49:07,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:49:06" (1/1) ... [2020-09-25 01:49:07,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07, skipping insertion in model container [2020-09-25 01:49:07,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:49:06" (1/1) ... [2020-09-25 01:49:07,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:49:07,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:49:07,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:49:07,564 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:49:07,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:49:07,751 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:49:07,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07 WrapperNode [2020-09-25 01:49:07,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:49:07,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:49:07,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:49:07,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:49:07,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... [2020-09-25 01:49:07,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:49:07,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:49:07,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:49:07,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:49:07,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:49:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:49:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:49:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:49:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:49:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:49:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:49:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:49:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:49:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:49:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:49:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:49:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:49:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:49:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:49:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:49:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:49:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:49:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:49:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:49:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:49:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:49:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:49:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:49:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:49:07,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:49:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:49:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:49:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:49:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:49:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:49:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:49:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:49:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:49:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:49:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:49:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:49:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:49:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:49:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:49:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:49:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:49:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:49:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:49:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:49:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:49:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:49:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:49:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:49:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:49:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:49:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:49:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:49:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:49:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:49:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:49:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:49:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:49:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:49:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:49:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:49:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:49:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:49:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:49:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:49:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:49:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:49:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:49:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:49:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:49:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:49:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:49:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:49:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:49:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:49:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:49:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:49:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:49:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:49:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:49:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:49:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:49:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:49:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:49:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:49:09,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:49:09,126 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:49:09,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:49:09 BoogieIcfgContainer [2020-09-25 01:49:09,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:49:09,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:49:09,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:49:09,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:49:09,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:49:06" (1/3) ... [2020-09-25 01:49:09,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69db42dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:49:09, skipping insertion in model container [2020-09-25 01:49:09,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:49:07" (2/3) ... [2020-09-25 01:49:09,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69db42dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:49:09, skipping insertion in model container [2020-09-25 01:49:09,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:49:09" (3/3) ... [2020-09-25 01:49:09,145 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product03.cil.c [2020-09-25 01:49:09,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:49:09,169 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:49:09,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:49:09,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:49:09,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:49:09,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:49:09,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:49:09,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:49:09,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:49:09,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:49:09,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:49:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states. [2020-09-25 01:49:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 01:49:09,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:09,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:09,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash -995917748, now seen corresponding path program 1 times [2020-09-25 01:49:09,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:09,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787529278] [2020-09-25 01:49:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:09,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:14,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 01:49:14,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:49:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 01:49:14,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:14,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:49:14,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 01:49:15,159 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:49:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:49:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:49:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 01:49:15,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 01:49:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:49:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:49:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:49:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:15,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:15,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:49:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:49:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:49:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:15,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:15,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:49:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:15,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:49:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:15,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:15,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:49:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:15,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:15,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:15,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:49:15,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:15,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:49:15,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787529278] [2020-09-25 01:49:15,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:49:15,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:49:15,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145947307] [2020-09-25 01:49:15,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:49:15,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:49:15,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:49:15,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:49:15,564 INFO L87 Difference]: Start difference. First operand 267 states. Second operand 3 states. [2020-09-25 01:49:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:49:16,780 INFO L93 Difference]: Finished difference Result 385 states and 461 transitions. [2020-09-25 01:49:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:49:16,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 01:49:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:49:16,804 INFO L225 Difference]: With dead ends: 385 [2020-09-25 01:49:16,804 INFO L226 Difference]: Without dead ends: 249 [2020-09-25 01:49:16,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:49:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-25 01:49:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 210. [2020-09-25 01:49:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 01:49:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2020-09-25 01:49:16,914 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 153 [2020-09-25 01:49:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:49:16,916 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2020-09-25 01:49:16,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:49:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2020-09-25 01:49:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 01:49:16,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:16,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:16,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:49:16,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:16,923 INFO L82 PathProgramCache]: Analyzing trace with hash -580992356, now seen corresponding path program 1 times [2020-09-25 01:49:16,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:16,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035449743] [2020-09-25 01:49:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:49:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:49:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 01:49:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:49:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:49:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:49:22,343 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:49:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:49:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:49:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 01:49:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:49:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:22,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:49:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:22,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:49:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:49:22,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:49:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:49:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:49:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:22,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:49:22,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 01:49:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:22,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:22,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:49:22,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:49:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:22,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 01:49:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:22,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:22,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:22,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:22,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:22,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:49:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:49:22,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035449743] [2020-09-25 01:49:22,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:49:22,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:49:22,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871584563] [2020-09-25 01:49:22,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:49:22,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:49:22,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:49:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:49:22,614 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand 4 states. [2020-09-25 01:49:23,224 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:49:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:49:23,861 INFO L93 Difference]: Finished difference Result 293 states and 326 transitions. [2020-09-25 01:49:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:49:23,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 01:49:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:49:23,865 INFO L225 Difference]: With dead ends: 293 [2020-09-25 01:49:23,866 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 01:49:23,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:49:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 01:49:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 200. [2020-09-25 01:49:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 01:49:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 212 transitions. [2020-09-25 01:49:23,905 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 212 transitions. Word has length 154 [2020-09-25 01:49:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:49:23,906 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 212 transitions. [2020-09-25 01:49:23,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:49:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 212 transitions. [2020-09-25 01:49:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 01:49:23,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:23,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:23,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:49:23,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:23,911 INFO L82 PathProgramCache]: Analyzing trace with hash 229202311, now seen corresponding path program 1 times [2020-09-25 01:49:23,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:23,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123536843] [2020-09-25 01:49:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 01:49:27,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:49:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3117 [2020-09-25 01:49:27,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:49:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 01:49:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 01:49:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,393 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:49:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:49:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:49:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 01:49:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:27,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 01:49:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:49:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:27,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:27,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:49:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:27,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:27,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:49:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:27,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:49:27,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:49:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:27,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:49:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:27,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:27,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:49:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:27,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:27,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 01:49:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:27,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:27,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:49:27,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123536843] [2020-09-25 01:49:27,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:49:27,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:49:27,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269755129] [2020-09-25 01:49:27,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:49:27,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:49:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:49:27,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:49:27,783 INFO L87 Difference]: Start difference. First operand 200 states and 212 transitions. Second operand 4 states. [2020-09-25 01:49:28,273 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:49:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:49:29,443 INFO L93 Difference]: Finished difference Result 420 states and 475 transitions. [2020-09-25 01:49:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:49:29,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 01:49:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:49:29,448 INFO L225 Difference]: With dead ends: 420 [2020-09-25 01:49:29,448 INFO L226 Difference]: Without dead ends: 330 [2020-09-25 01:49:29,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:49:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-25 01:49:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 278. [2020-09-25 01:49:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-09-25 01:49:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 301 transitions. [2020-09-25 01:49:29,504 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 301 transitions. Word has length 163 [2020-09-25 01:49:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:49:29,505 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 301 transitions. [2020-09-25 01:49:29,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:49:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 301 transitions. [2020-09-25 01:49:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 01:49:29,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:29,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:29,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:49:29,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:29,509 INFO L82 PathProgramCache]: Analyzing trace with hash -63137044, now seen corresponding path program 1 times [2020-09-25 01:49:29,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:29,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290346385] [2020-09-25 01:49:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:31,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:31,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 01:49:31,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-09-25 01:49:31,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 01:49:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 01:49:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 01:49:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:49:31,679 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:49:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:49:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:49:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 01:49:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 01:49:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:31,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:49:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:31,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:31,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:31,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:31,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:49:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:31,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:31,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:31,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:31,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:31,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:49:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:31,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:31,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:49:31,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:49:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:32,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:32,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:32,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:32,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:32,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:49:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:32,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:32,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:32,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:49:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:32,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:32,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:32,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:32,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:32,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:32,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:49:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:32,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:32,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:32,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:49:32,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:49:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 01:49:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:32,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:32,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:32,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:32,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:49:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:49:32,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290346385] [2020-09-25 01:49:32,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:49:32,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:49:32,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275485212] [2020-09-25 01:49:32,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:49:32,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:49:32,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:49:32,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:49:32,091 INFO L87 Difference]: Start difference. First operand 278 states and 301 transitions. Second operand 8 states. [2020-09-25 01:49:32,634 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:49:34,343 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:49:34,612 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:49:34,947 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:49:35,276 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:49:35,624 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:49:35,904 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:49:36,176 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:49:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:49:36,512 INFO L93 Difference]: Finished difference Result 629 states and 727 transitions. [2020-09-25 01:49:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:49:36,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-25 01:49:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:49:36,526 INFO L225 Difference]: With dead ends: 629 [2020-09-25 01:49:36,527 INFO L226 Difference]: Without dead ends: 461 [2020-09-25 01:49:36,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:49:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-09-25 01:49:36,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 429. [2020-09-25 01:49:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-25 01:49:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 479 transitions. [2020-09-25 01:49:36,629 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 479 transitions. Word has length 166 [2020-09-25 01:49:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:49:36,631 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 479 transitions. [2020-09-25 01:49:36,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:49:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 479 transitions. [2020-09-25 01:49:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 01:49:36,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:36,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:36,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:49:36,636 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash 585626603, now seen corresponding path program 1 times [2020-09-25 01:49:36,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:36,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973827209] [2020-09-25 01:49:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:36,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:41,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 01:49:41,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:49:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:49:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:49:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:49:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 01:49:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,031 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:49:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:49:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:49:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 01:49:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:49:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:42,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:42,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:42,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:42,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:49:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:49:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:49:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:42,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:49:42,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:42,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:49:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:42,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:49:42,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:49:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:49:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 01:49:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:49:42,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:49:42,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:49:42,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:49:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:49:42,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:49:42,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:49:42,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:49:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:42,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:49:42,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:49:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:42,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:49:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:49:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 01:49:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:42,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:49:42,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:49:42,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:49:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:49:42,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:49:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:49:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:49:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:49:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:49:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:49:42,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973827209] [2020-09-25 01:49:42,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:49:42,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:49:42,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609691401] [2020-09-25 01:49:42,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:49:42,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:49:42,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:49:42,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:49:42,404 INFO L87 Difference]: Start difference. First operand 429 states and 479 transitions. Second operand 9 states. [2020-09-25 01:49:43,563 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:49:44,972 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:49:45,293 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:49:45,603 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:49:45,908 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:49:46,308 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 01:49:46,699 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-09-25 01:49:47,039 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 01:49:47,344 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:49:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:49:47,678 INFO L93 Difference]: Finished difference Result 799 states and 918 transitions. [2020-09-25 01:49:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 01:49:47,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 01:49:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:49:47,684 INFO L225 Difference]: With dead ends: 799 [2020-09-25 01:49:47,684 INFO L226 Difference]: Without dead ends: 613 [2020-09-25 01:49:47,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 01:49:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-09-25 01:49:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 577. [2020-09-25 01:49:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-09-25 01:49:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 649 transitions. [2020-09-25 01:49:47,753 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 649 transitions. Word has length 171 [2020-09-25 01:49:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:49:47,753 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 649 transitions. [2020-09-25 01:49:47,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:49:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 649 transitions. [2020-09-25 01:49:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 01:49:47,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:47,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:47,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:49:47,758 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:47,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1257129521, now seen corresponding path program 1 times [2020-09-25 01:49:47,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:47,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998024875] [2020-09-25 01:49:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:49:47,818 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:49:47,819 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:49:47,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:49:47,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:49:47 BoogieIcfgContainer [2020-09-25 01:49:47,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:49:47,852 INFO L168 Benchmark]: Toolchain (without parser) took 40839.39 ms. Allocated memory was 146.8 MB in the beginning and 684.2 MB in the end (delta: 537.4 MB). Free memory was 100.5 MB in the beginning and 549.2 MB in the end (delta: -448.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2020-09-25 01:49:47,853 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:49:47,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.01 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 172.8 MB in the end (delta: -73.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:49:47,855 INFO L168 Benchmark]: Boogie Preprocessor took 95.40 ms. Allocated memory is still 203.9 MB. Free memory was 172.8 MB in the beginning and 168.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:49:47,855 INFO L168 Benchmark]: RCFGBuilder took 1284.30 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.2 MB in the beginning and 181.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:49:47,856 INFO L168 Benchmark]: TraceAbstraction took 38715.11 ms. Allocated memory was 235.9 MB in the beginning and 684.2 MB in the end (delta: 448.3 MB). Free memory was 181.3 MB in the beginning and 549.2 MB in the end (delta: -367.9 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:49:47,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.01 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 172.8 MB in the end (delta: -73.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.40 ms. Allocated memory is still 203.9 MB. Free memory was 172.8 MB in the beginning and 168.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1284.30 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.2 MB in the beginning and 181.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38715.11 ms. Allocated memory was 235.9 MB in the beginning and 684.2 MB in the end (delta: 448.3 MB). Free memory was 181.3 MB in the beginning and 549.2 MB in the end (delta: -367.9 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 650]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L119] int pumpRunning = 0; [L120] int systemActive = 1; [L411] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L690] int cleanupTimeShifts = 4; [L786] int waterLevel = 1; [L787] int methaneLevelCritical = 0; [L763] int retValue_acc ; [L764] int tmp ; [L768] FCALL select_helpers() [L769] FCALL select_features() [L770] CALL, EXPR valid_product() [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); [L770] RET, EXPR valid_product() [L770] tmp = valid_product() [L772] COND TRUE \read(tmp) [L774] FCALL setup() [L775] CALL runTest() [L757] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L804] COND TRUE waterLevel < 2 [L805] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L127] COND FALSE !(\read(pumpRunning)) [L134] COND TRUE \read(systemActive) [L136] FCALL processEnvironment() [L142] CALL __utac_acc__Specification3_spec__1() [L657] int tmp ; [L658] int tmp___0 ; [L659] int tmp___1 ; [L663] CALL, EXPR isMethaneLevelCritical() [L825] int retValue_acc ; [L828] retValue_acc = methaneLevelCritical [L829] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L669] CALL, EXPR getWaterLevel() [L857] int retValue_acc ; [L860] retValue_acc = waterLevel [L861] return (retValue_acc); [L669] RET, EXPR getWaterLevel() [L669] tmp___0 = getWaterLevel() [L671] COND TRUE tmp___0 == 2 [L673] CALL, EXPR isPumpRunning() [L182] int retValue_acc ; [L185] retValue_acc = pumpRunning [L186] return (retValue_acc); [L673] RET, EXPR isPumpRunning() [L673] tmp___1 = isPumpRunning() [L675] COND FALSE !(\read(tmp___1)) [L679] CALL __automaton_fail() [L650] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 584 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1041 SDtfs, 919 SDslu, 1419 SDs, 0 SdLazy, 2604 SolverSat, 256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=577occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 191 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 978 NumberOfCodeBlocks, 978 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 339958 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...