/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:13:41,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:13:41,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:13:41,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:13:41,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:13:41,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:13:41,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:13:41,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:13:41,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:13:41,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:13:41,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:13:41,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:13:41,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:13:41,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:13:41,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:13:41,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:13:41,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:13:41,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:13:41,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:13:41,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:13:41,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:13:41,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:13:41,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:13:41,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:13:41,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:13:41,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:13:41,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:13:41,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:13:41,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:13:41,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:13:41,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:13:41,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:13:41,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:13:41,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:13:41,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:13:41,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:13:41,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:13:41,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:13:41,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:13:41,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:13:41,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:13:41,470 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 20:13:41,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:13:41,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:13:41,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:13:41,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:13:41,498 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:13:41,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:13:41,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:13:41,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:13:41,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:13:41,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:13:41,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:13:41,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:13:41,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:13:41,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:13:41,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:13:41,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:13:41,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:13:41,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:13:41,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:13:41,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:13:41,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:13:41,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:13:41,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:13:41,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:13:41,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:13:41,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:13:41,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:13:41,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:13:41,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:13:41,503 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 20:13:41,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:13:41,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:13:41,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:13:42,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:13:42,001 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:13:42,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-09-24 20:13:42,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b1247d36/b8664638aff34ee18cc6bb67908f3f48/FLAG8d13fc757 [2020-09-24 20:13:42,772 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:13:42,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-09-24 20:13:42,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b1247d36/b8664638aff34ee18cc6bb67908f3f48/FLAG8d13fc757 [2020-09-24 20:13:42,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b1247d36/b8664638aff34ee18cc6bb67908f3f48 [2020-09-24 20:13:42,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:13:42,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:13:42,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:13:42,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:13:42,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:13:42,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:42" (1/1) ... [2020-09-24 20:13:42,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:42, skipping insertion in model container [2020-09-24 20:13:42,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:13:42" (1/1) ... [2020-09-24 20:13:43,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:13:43,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:13:43,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:13:43,577 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:13:43,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:13:43,698 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:13:43,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43 WrapperNode [2020-09-24 20:13:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:13:43,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:13:43,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:13:43,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:13:43,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (1/1) ... [2020-09-24 20:13:43,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:13:43,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:13:43,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:13:43,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:13:43,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (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 20:13:43,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:13:43,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:13:43,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:13:43,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:13:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:13:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:13:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:13:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:13:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:13:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:13:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:13:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:13:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:13:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:13:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:13:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:13:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:13:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:13:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:13:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:13:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:13:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:13:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 20:13:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:13:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 20:13:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:13:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:13:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:13:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:13:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:13:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 20:13:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 20:13:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:13:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:13:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:13:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:13:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:13:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:13:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 20:13:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:13:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:13:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:13:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:13:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:13:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:13:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:13:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:13:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:13:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:13:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:13:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:13:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:13:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:13:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:13:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:13:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:13:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:13:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:13:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:13:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:13:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:13:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:13:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:13:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:13:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:13:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:13:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:13:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:13:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:13:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 20:13:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:13:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:13:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:13:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 20:13:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:13:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:13:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:13:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:13:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:13:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:13:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 20:13:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 20:13:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:13:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 20:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:13:45,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:13:45,172 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:13:45,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:45 BoogieIcfgContainer [2020-09-24 20:13:45,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:13:45,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:13:45,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:13:45,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:13:45,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:13:42" (1/3) ... [2020-09-24 20:13:45,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a448656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:45, skipping insertion in model container [2020-09-24 20:13:45,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:13:43" (2/3) ... [2020-09-24 20:13:45,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a448656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:13:45, skipping insertion in model container [2020-09-24 20:13:45,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:13:45" (3/3) ... [2020-09-24 20:13:45,190 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-09-24 20:13:45,202 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:13:45,212 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:13:45,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:13:45,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:13:45,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:13:45,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:13:45,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:13:45,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:13:45,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:13:45,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:13:45,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:13:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2020-09-24 20:13:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 20:13:45,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:45,320 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 20:13:45,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1612013966, now seen corresponding path program 1 times [2020-09-24 20:13:45,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:45,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823287913] [2020-09-24 20:13:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 20:13:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:13:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:13:50,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:13:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 20:13:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 20:13:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:13:51,184 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-24 20:13:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 20:13:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:51,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:13:51,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:51,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:13:51,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:51,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:13:51,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:51,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 20:13:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:51,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 20:13:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:51,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:13:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:13:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 20:13:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:51,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:51,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:51,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:51,898 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 20:13:51,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823287913] [2020-09-24 20:13:51,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:51,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:13:51,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735214733] [2020-09-24 20:13:51,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:13:51,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:51,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:13:51,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:13:51,942 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 8 states. [2020-09-24 20:13:52,597 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:54,421 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:54,792 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:13:55,216 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:55,669 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:56,011 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:13:56,316 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:56,643 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:13:58,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:58,262 INFO L93 Difference]: Finished difference Result 702 states and 868 transitions. [2020-09-24 20:13:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:13:58,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 20:13:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:58,286 INFO L225 Difference]: With dead ends: 702 [2020-09-24 20:13:58,287 INFO L226 Difference]: Without dead ends: 486 [2020-09-24 20:13:58,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:13:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-09-24 20:13:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 436. [2020-09-24 20:13:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-09-24 20:13:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 498 transitions. [2020-09-24 20:13:58,454 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 498 transitions. Word has length 153 [2020-09-24 20:13:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:58,455 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 498 transitions. [2020-09-24 20:13:58,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:13:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 498 transitions. [2020-09-24 20:13:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 20:13:58,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:58,463 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 20:13:58,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:13:58,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:58,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1936006400, now seen corresponding path program 1 times [2020-09-24 20:13:58,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:58,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419626099] [2020-09-24 20:13:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:03,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:03,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 20:14:03,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:14:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-24 20:14:03,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:14:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 20:14:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 20:14:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:03,886 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:14:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:14:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:14:04,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 20:14:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:14:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:14:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:14:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:14:04,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:14:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:14:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:14:04,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:14:04,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:14:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:14:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:14:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:14:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:14:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:14:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:14:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:14:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 20:14:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:14:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:14:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:14:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 20:14:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:14:04,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:14:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 20:14:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:04,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:14:04,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:14:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 20:14:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:04,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:04,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:04,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:04,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:14:04,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:14:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:04,395 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 20:14:04,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419626099] [2020-09-24 20:14:04,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:14:04,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:14:04,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334783066] [2020-09-24 20:14:04,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:14:04,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:14:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:14:04,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:14:04,402 INFO L87 Difference]: Start difference. First operand 436 states and 498 transitions. Second operand 5 states. [2020-09-24 20:14:04,872 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:14:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:14:07,236 INFO L93 Difference]: Finished difference Result 999 states and 1249 transitions. [2020-09-24 20:14:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:14:07,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-24 20:14:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:14:07,253 INFO L225 Difference]: With dead ends: 999 [2020-09-24 20:14:07,253 INFO L226 Difference]: Without dead ends: 673 [2020-09-24 20:14:07,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:14:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-09-24 20:14:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 616. [2020-09-24 20:14:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-09-24 20:14:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 723 transitions. [2020-09-24 20:14:07,390 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 723 transitions. Word has length 159 [2020-09-24 20:14:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:14:07,391 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 723 transitions. [2020-09-24 20:14:07,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:14:07,392 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 723 transitions. [2020-09-24 20:14:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 20:14:07,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:14:07,396 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 20:14:07,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:14:07,396 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:14:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:14:07,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2029650158, now seen corresponding path program 1 times [2020-09-24 20:14:07,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:14:07,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761038731] [2020-09-24 20:14:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:14:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:08,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:08,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 20:14:08,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-09-24 20:14:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:14:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 20:14:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:14:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:14:08,882 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:14:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:14:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:14:09,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 20:14:09,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:14:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:14:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:14:09,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:14:09,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:14:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:14:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:14:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:14:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:14:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:14:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:14:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:09,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:14:09,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:14:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:14:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:14:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:14:09,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:14:09,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:14:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:14:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 20:14:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:14:09,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:14:09,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:14:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:14:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:14:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:14:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 20:14:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:14:09,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:14:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:09,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:14:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 20:14:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:09,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:14:09,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:14:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:09,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:14:09,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 20:14:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:14:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:14:09,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:14:09,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:14:09,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:14:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:14:09,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:14:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:14:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:14:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:14:09,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:14:09,342 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 20:14:09,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761038731] [2020-09-24 20:14:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:14:09,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:14:09,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759942525] [2020-09-24 20:14:09,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:14:09,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:14:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:14:09,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:14:09,345 INFO L87 Difference]: Start difference. First operand 616 states and 723 transitions. Second operand 6 states. [2020-09-24 20:14:10,005 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:14:10,745 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:14:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:14:13,727 INFO L93 Difference]: Finished difference Result 1867 states and 2334 transitions. [2020-09-24 20:14:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:14:13,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-24 20:14:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:14:13,741 INFO L225 Difference]: With dead ends: 1867 [2020-09-24 20:14:13,741 INFO L226 Difference]: Without dead ends: 1361 [2020-09-24 20:14:13,744 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 20:14:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-24 20:14:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1252. [2020-09-24 20:14:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2020-09-24 20:14:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1493 transitions. [2020-09-24 20:14:13,948 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1493 transitions. Word has length 168 [2020-09-24 20:14:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:14:13,950 INFO L479 AbstractCegarLoop]: Abstraction has 1252 states and 1493 transitions. [2020-09-24 20:14:13,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:14:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1493 transitions. [2020-09-24 20:14:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 20:14:13,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:14:13,956 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 20:14:13,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:14:13,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:14:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:14:13,957 INFO L82 PathProgramCache]: Analyzing trace with hash 654753658, now seen corresponding path program 1 times [2020-09-24 20:14:13,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:14:13,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700700934] [2020-09-24 20:14:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:14:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:14:14,028 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:14:14,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:14:14,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:14:14,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:14:14 BoogieIcfgContainer [2020-09-24 20:14:14,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:14:14,074 INFO L168 Benchmark]: Toolchain (without parser) took 31099.82 ms. Allocated memory was 146.8 MB in the beginning and 582.0 MB in the end (delta: 435.2 MB). Free memory was 102.5 MB in the beginning and 170.6 MB in the end (delta: -68.1 MB). Peak memory consumption was 367.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:14:14,075 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:14:14,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.78 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 170.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:14:14,078 INFO L168 Benchmark]: Boogie Preprocessor took 129.62 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 165.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:14:14,084 INFO L168 Benchmark]: RCFGBuilder took 1350.44 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 165.9 MB in the beginning and 172.2 MB in the end (delta: -6.2 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:14:14,085 INFO L168 Benchmark]: TraceAbstraction took 28890.12 ms. Allocated memory was 237.0 MB in the beginning and 582.0 MB in the end (delta: 345.0 MB). Free memory was 172.2 MB in the beginning and 170.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 346.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:14:14,096 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.78 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 170.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.62 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 165.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1350.44 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 165.9 MB in the beginning and 172.2 MB in the end (delta: -6.2 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28890.12 ms. Allocated memory was 237.0 MB in the beginning and 582.0 MB in the end (delta: 345.0 MB). Free memory was 172.2 MB in the beginning and 170.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 346.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) [L577] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L577] RET waterRise() [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) [L603] CALL stopSystem() [L828] COND FALSE !(\read(pumpRunning)) [L835] systemActive = 0 [L603] RET stopSystem() [L610] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND FALSE !(\read(systemActive)) [L652] CALL __utac_acc__Specification3_spec__1() [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L942] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] RET, EXPR isMethaneLevelCritical() [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L948] CALL, EXPR getWaterLevel() [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] RET, EXPR getWaterLevel() [L948] tmp___0 = getWaterLevel() [L950] COND TRUE tmp___0 == 2 [L952] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L952] RET, EXPR isPumpRunning() [L952] tmp___1 = isPumpRunning() [L954] COND FALSE !(\read(tmp___1)) [L958] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 639 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 859 SDtfs, 1700 SDslu, 1079 SDs, 0 SdLazy, 2597 SolverSat, 628 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1252occurred 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: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 216 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 477 ConstructedInterpolants, 0 QuantifiedInterpolants, 226976 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...