/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=BIGGEST --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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:13:23,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:13:23,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:13:23,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:13:23,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:13:23,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:13:23,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:13:23,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:13:23,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:13:23,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:13:23,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:13:23,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:13:23,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:13:23,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:13:23,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:13:23,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:13:23,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:13:23,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:13:23,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:13:23,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:13:23,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:13:23,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:13:23,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:13:23,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:13:23,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:13:23,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:13:23,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:13:23,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:13:23,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:13:23,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:13:23,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:13:23,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:13:23,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:13:23,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:13:23,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:13:23,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:13:23,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:13:23,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:13:23,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:13:23,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:13:23,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:13:23,469 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 [2020-09-24 20:13:23,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:13:23,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:13:23,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:13:23,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:13:23,517 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:13:23,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:13:23,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:13:23,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:13:23,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:13:23,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:13:23,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:13:23,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:13:23,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:13:23,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:13:23,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:13:23,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:13:23,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:13:23,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:13:23,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:13:23,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:13:23,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:13:23,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:13:23,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:13:23,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:13:23,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:13:23,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:13:23,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:13:23,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:13:23,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:13:23,523 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:13:24,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:13:24,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:13:24,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:13:24,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:13:24,040 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:13:24,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-09-24 20:13:24,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c748dccb/1cc1c4c6e95541c8bd414763017316f4/FLAG26dcdff92 [2020-09-24 20:13:24,802 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:13:24,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-09-24 20:13:24,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c748dccb/1cc1c4c6e95541c8bd414763017316f4/FLAG26dcdff92 [2020-09-24 20:13:24,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c748dccb/1cc1c4c6e95541c8bd414763017316f4 [2020-09-24 20:13:25,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:13:25,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:13:25,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:13:25,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:13:25,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:13:25,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:24" (1/1) ... [2020-09-24 20:13:25,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25, skipping insertion in model container [2020-09-24 20:13:25,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:24" (1/1) ... [2020-09-24 20:13:25,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:13:25,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:13:25,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:13:25,466 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:13:25,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:13:25,700 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:13:25,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25 WrapperNode [2020-09-24 20:13:25,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:13:25,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:13:25,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:13:25,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:13:25,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (1/1) ... [2020-09-24 20:13:25,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:13:25,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:13:25,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:13:25,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:13:25,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (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 [2020-09-24 20:13:25,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:13:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:13:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:13:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:13:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:13:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:13:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:13:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:13:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:13:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 20:13:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:13:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:13:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:13:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:13:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:13:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:13:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:13:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:13:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:13:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:13:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 20:13:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:13:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 20:13:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:13:25,932 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:13:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:13:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:13:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:13:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 20:13:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 20:13:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:13:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:13:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:13:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:13:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:13:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:13:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:13:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:13:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:13:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:13:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:13:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:13:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:13:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 20:13:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:13:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:13:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:13:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:13:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:13:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:13:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:13:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:13:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:13:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:13:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:13:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:13:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 20:13:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:13:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:13:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:13:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:13:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:13:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:13:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:13:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:13:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:13:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:13:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 20:13:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 20:13:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:13:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 20:13:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:13:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:13:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:13:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:13:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:13:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:13:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:13:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:13:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:13:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:13:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:13:27,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:13:27,051 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:13:27,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:27 BoogieIcfgContainer [2020-09-24 20:13:27,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:13:27,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:13:27,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:13:27,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:13:27,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:13:24" (1/3) ... [2020-09-24 20:13:27,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b20dc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:27, skipping insertion in model container [2020-09-24 20:13:27,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:25" (2/3) ... [2020-09-24 20:13:27,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b20dc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:27, skipping insertion in model container [2020-09-24 20:13:27,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:27" (3/3) ... [2020-09-24 20:13:27,069 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2020-09-24 20:13:27,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:13:27,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:13:27,116 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:13:27,148 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:13:27,148 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:13:27,148 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:13:27,148 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:13:27,148 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:13:27,148 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:13:27,149 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:13:27,149 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:13:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-09-24 20:13:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 20:13:27,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:27,201 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] [2020-09-24 20:13:27,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:27,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1392630044, now seen corresponding path program 1 times [2020-09-24 20:13:27,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:27,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904630293] [2020-09-24 20:13:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:32,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:32,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 20:13:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:13:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:13:32,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:13:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 20:13:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 20:13:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 20:13:33,261 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:33,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-24 20:13:33,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:33,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 20:13:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:13:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:33,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:33,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 34 [2020-09-24 20:13:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:33,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:33,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:33,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:33,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:13:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:33,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:33,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 20:13:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 20:13:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:13:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:13:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 20:13:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:33,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:33,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904630293] [2020-09-24 20:13:33,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:33,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:13:33,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013419427] [2020-09-24 20:13:33,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:13:33,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:33,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:13:33,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:13:34,001 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 8 states. [2020-09-24 20:13:34,576 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:36,383 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:36,748 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:13:37,156 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:37,589 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:37,922 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:13:38,217 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:38,530 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:39,959 INFO L93 Difference]: Finished difference Result 655 states and 810 transitions. [2020-09-24 20:13:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:13:39,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 20:13:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:39,987 INFO L225 Difference]: With dead ends: 655 [2020-09-24 20:13:39,987 INFO L226 Difference]: Without dead ends: 454 [2020-09-24 20:13:39,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:13:40,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-09-24 20:13:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 406. [2020-09-24 20:13:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-09-24 20:13:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 465 transitions. [2020-09-24 20:13:40,147 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 465 transitions. Word has length 153 [2020-09-24 20:13:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:40,149 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 465 transitions. [2020-09-24 20:13:40,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:13:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 465 transitions. [2020-09-24 20:13:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 20:13:40,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:40,157 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] [2020-09-24 20:13:40,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:13:40,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:40,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1956789942, now seen corresponding path program 1 times [2020-09-24 20:13:40,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:40,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107722894] [2020-09-24 20:13:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:40,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 20:13:45,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:13:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 20:13:45,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:13:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 20:13:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:13:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:45,505 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 20:13:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:13:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:45,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:45,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:45,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:45,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:45,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:13:45,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:45,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:45,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 20:13:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:13:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:13:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 20:13:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:45,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 20:13:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:45,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:13:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 20:13:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:45,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:45,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:45,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:45,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:13:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:45,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107722894] [2020-09-24 20:13:45,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:45,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:13:45,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950535669] [2020-09-24 20:13:45,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:13:45,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:45,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:13:45,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:13:45,991 INFO L87 Difference]: Start difference. First operand 406 states and 465 transitions. Second operand 5 states. [2020-09-24 20:13:46,460 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:47,184 INFO L93 Difference]: Finished difference Result 617 states and 739 transitions. [2020-09-24 20:13:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:13:47,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-24 20:13:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:47,194 INFO L225 Difference]: With dead ends: 617 [2020-09-24 20:13:47,195 INFO L226 Difference]: Without dead ends: 310 [2020-09-24 20:13:47,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:13:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-24 20:13:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 288. [2020-09-24 20:13:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-09-24 20:13:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 308 transitions. [2020-09-24 20:13:47,267 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 308 transitions. Word has length 159 [2020-09-24 20:13:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:47,270 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 308 transitions. [2020-09-24 20:13:47,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:13:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 308 transitions. [2020-09-24 20:13:47,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 20:13:47,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:47,276 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] [2020-09-24 20:13:47,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:13:47,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:47,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1817589318, now seen corresponding path program 1 times [2020-09-24 20:13:47,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:47,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909465126] [2020-09-24 20:13:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:48,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 20:13:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-24 20:13:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:13:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 20:13:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:13:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:48,770 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 20:13:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 20:13:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:49,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:13:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:49,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:49,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 20:13:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:13:49,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:13:49,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:13:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 20:13:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:49,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:49,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 20:13:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:49,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 20:13:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:49,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:49,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:49,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:49,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:49,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:49,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909465126] [2020-09-24 20:13:49,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:49,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:13:49,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392273318] [2020-09-24 20:13:49,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:13:49,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:13:49,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:13:49,238 INFO L87 Difference]: Start difference. First operand 288 states and 308 transitions. Second operand 6 states. [2020-09-24 20:13:49,747 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:50,383 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:13:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:51,840 INFO L93 Difference]: Finished difference Result 810 states and 915 transitions. [2020-09-24 20:13:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:13:51,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-24 20:13:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:51,851 INFO L225 Difference]: With dead ends: 810 [2020-09-24 20:13:51,851 INFO L226 Difference]: Without dead ends: 632 [2020-09-24 20:13:51,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:13:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-09-24 20:13:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 592. [2020-09-24 20:13:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-09-24 20:13:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 654 transitions. [2020-09-24 20:13:51,937 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 654 transitions. Word has length 168 [2020-09-24 20:13:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:51,938 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 654 transitions. [2020-09-24 20:13:51,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:13:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 654 transitions. [2020-09-24 20:13:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 20:13:51,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:51,942 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, 1, 1, 1, 1, 1, 1] [2020-09-24 20:13:51,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:13:51,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1677643238, now seen corresponding path program 1 times [2020-09-24 20:13:51,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:51,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758044726] [2020-09-24 20:13:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:13:52,010 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:13:52,010 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:13:52,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:13:52,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:13:52 BoogieIcfgContainer [2020-09-24 20:13:52,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:13:52,047 INFO L168 Benchmark]: Toolchain (without parser) took 27038.09 ms. Allocated memory was 140.5 MB in the beginning and 525.9 MB in the end (delta: 385.4 MB). Free memory was 102.7 MB in the beginning and 173.6 MB in the end (delta: -70.9 MB). Peak memory consumption was 314.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:52,048 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:13:52,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.0 MB in the beginning and 174.9 MB in the end (delta: -72.9 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:52,049 INFO L168 Benchmark]: Boogie Preprocessor took 114.97 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 170.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:52,050 INFO L168 Benchmark]: RCFGBuilder took 1241.91 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 170.1 MB in the beginning and 175.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:52,051 INFO L168 Benchmark]: TraceAbstraction took 24984.58 ms. Allocated memory was 236.5 MB in the beginning and 525.9 MB in the end (delta: 289.4 MB). Free memory was 175.6 MB in the beginning and 173.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 291.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:52,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.0 MB in the beginning and 174.9 MB in the end (delta: -72.9 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.97 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 170.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1241.91 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 170.1 MB in the beginning and 175.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24984.58 ms. Allocated memory was 236.5 MB in the beginning and 525.9 MB in the end (delta: 289.4 MB). Free memory was 175.6 MB in the beginning and 173.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 291.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L314] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int pumpRunning = 0; [L586] int systemActive = 1; [L868] int cleanupTimeShifts = 4; [L941] int retValue_acc ; [L942] int tmp ; [L946] FCALL select_helpers() [L947] FCALL select_features() [L948] CALL, EXPR valid_product() [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); [L948] RET, EXPR valid_product() [L948] tmp = valid_product() [L950] COND TRUE \read(tmp) [L952] FCALL setup() [L953] CALL runTest() [L935] CALL test() [L515] int splverifierCounter ; [L516] int tmp ; [L517] int tmp___0 ; [L518] int tmp___1 ; [L519] int tmp___2 ; [L522] splverifierCounter = 0 [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L558] tmp___1 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___1) [L562] CALL stopSystem() [L784] COND FALSE !(\read(pumpRunning)) [L791] systemActive = 0 [L562] RET stopSystem() [L569] CALL timeShift() [L593] COND FALSE !(\read(pumpRunning)) [L600] COND FALSE !(\read(systemActive)) [L608] CALL __utac_acc__Specification3_spec__1() [L797] int tmp ; [L798] int tmp___0 ; [L799] int tmp___1 ; [L803] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) [L809] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L809] RET, EXPR getWaterLevel() [L809] tmp___0 = getWaterLevel() [L811] COND TRUE tmp___0 == 2 [L813] CALL, EXPR isPumpRunning() [L717] int retValue_acc ; [L720] retValue_acc = pumpRunning [L721] return (retValue_acc); [L813] RET, EXPR isPumpRunning() [L813] tmp___1 = isPumpRunning() [L815] COND FALSE !(\read(tmp___1)) [L819] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 636 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 706 SDtfs, 1354 SDslu, 887 SDs, 0 SdLazy, 1903 SolverSat, 459 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 110 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 477 ConstructedInterpolants, 0 QuantifiedInterpolants, 207950 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...