/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:40:29,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:40:29,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:40:29,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:40:29,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:40:29,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:40:29,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:40:29,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:40:29,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:40:29,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:40:29,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:40:29,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:40:29,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:40:29,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:40:29,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:40:29,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:40:29,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:40:29,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:40:29,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:40:29,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:40:29,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:40:29,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:40:29,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:40:29,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:40:29,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:40:29,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:40:29,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:40:29,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:40:29,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:40:29,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:40:29,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:40:29,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:40:29,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:40:29,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:40:29,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:40:29,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:40:29,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:40:29,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:40:29,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:40:29,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:40:29,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:40:29,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:40:29,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:40:29,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:40:29,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:40:29,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:40:29,466 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:40:29,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:40:29,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:40:29,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:40:29,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:40:29,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:40:29,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:40:29,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:40:29,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:40:29,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:40:29,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:40:29,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:40:29,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:40:29,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:40:29,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:40:29,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:40:29,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:40:29,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:40:29,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:40:29,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:40:29,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:40:29,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:40:29,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:40:29,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:40:29,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:40:29,471 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:40:29,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:40:29,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:40:29,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:40:29,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:40:29,974 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:40:29,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-09-25 08:40:30,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0122159fe/cadb726718d7430998d4926aaeb43ce6/FLAGec7f96c40 [2020-09-25 08:40:30,693 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:40:30,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-09-25 08:40:30,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0122159fe/cadb726718d7430998d4926aaeb43ce6/FLAGec7f96c40 [2020-09-25 08:40:30,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0122159fe/cadb726718d7430998d4926aaeb43ce6 [2020-09-25 08:40:30,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:40:30,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:40:30,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:40:30,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:40:30,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:40:30,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:40:30" (1/1) ... [2020-09-25 08:40:30,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc7108f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:30, skipping insertion in model container [2020-09-25 08:40:30,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:40:30" (1/1) ... [2020-09-25 08:40:31,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:40:31,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:40:31,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:40:31,468 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:40:31,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:40:31,771 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:40:31,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31 WrapperNode [2020-09-25 08:40:31,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:40:31,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:40:31,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:40:31,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:40:31,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... [2020-09-25 08:40:31,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:40:31,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:40:31,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:40:31,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:40:31,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:40:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:40:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:40:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:40:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:40:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:40:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:40:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:40:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:40:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:40:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:40:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:40:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:40:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:40:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:40:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:40:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:40:31,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:40:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:40:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:40:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:40:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:40:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:40:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:40:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:40:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:40:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:40:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:40:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:40:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:40:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:40:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:40:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:40:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:40:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:40:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:40:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:40:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:40:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:40:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:40:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:40:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:40:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:40:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:40:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:40:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:40:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:40:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:40:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:40:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:40:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:40:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:40:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:40:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:40:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:40:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:40:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:40:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:40:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:40:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:40:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:40:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:40:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:40:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:40:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:40:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:40:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:40:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:40:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:40:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:40:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:40:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:40:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:40:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:40:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:40:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:40:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:40:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:40:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:40:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:40:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:40:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:40:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:40:33,276 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:40:33,276 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:40:33,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:40:33 BoogieIcfgContainer [2020-09-25 08:40:33,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:40:33,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:40:33,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:40:33,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:40:33,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:40:30" (1/3) ... [2020-09-25 08:40:33,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8b7791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:40:33, skipping insertion in model container [2020-09-25 08:40:33,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:40:31" (2/3) ... [2020-09-25 08:40:33,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8b7791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:40:33, skipping insertion in model container [2020-09-25 08:40:33,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:40:33" (3/3) ... [2020-09-25 08:40:33,308 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2020-09-25 08:40:33,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:40:33,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:40:33,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:40:33,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:40:33,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:40:33,402 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:40:33,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:40:33,402 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:40:33,402 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:40:33,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:40:33,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:40:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-09-25 08:40:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 08:40:33,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:40:33,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:40:33,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:40:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:40:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1134805363, now seen corresponding path program 1 times [2020-09-25 08:40:33,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:40:33,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470751731] [2020-09-25 08:40:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:40:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:38,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 08:40:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:40:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4248 [2020-09-25 08:40:38,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:38,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:38,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 08:40:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:40:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:40:38,551 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:40:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:40:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:40:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 08:40:39,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:40:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:40:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:39,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:40:39,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:40:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:40:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:40:39,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:40:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:39,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:40:39,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:40:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:40:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:40:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:40:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:39,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:39,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:39,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:40:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:39,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:39,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:40:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:39,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:39,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:39,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:40:39,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470751731] [2020-09-25 08:40:39,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:40:39,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:40:39,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409776011] [2020-09-25 08:40:39,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:40:39,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:40:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:40:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:40:39,300 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-09-25 08:40:39,955 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:40:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:40:40,766 INFO L93 Difference]: Finished difference Result 365 states and 438 transitions. [2020-09-25 08:40:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:40:40,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-25 08:40:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:40:40,789 INFO L225 Difference]: With dead ends: 365 [2020-09-25 08:40:40,789 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 08:40:40,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:40:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 08:40:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-09-25 08:40:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-25 08:40:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 214 transitions. [2020-09-25 08:40:40,902 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 214 transitions. Word has length 153 [2020-09-25 08:40:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:40:40,904 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 214 transitions. [2020-09-25 08:40:40,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:40:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 214 transitions. [2020-09-25 08:40:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 08:40:40,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:40:40,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:40:40,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:40:40,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:40:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:40:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash -812596280, now seen corresponding path program 1 times [2020-09-25 08:40:40,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:40:40,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094429162] [2020-09-25 08:40:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:40:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 08:40:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:40:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3174 [2020-09-25 08:40:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:40:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:40:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,431 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:40:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:40:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:40:44,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 08:40:44,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:40:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:44,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:44,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:40:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:44,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:40:44,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:40:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:44,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:40:44,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:40:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:44,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:40:44,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 08:40:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:44,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:40:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 08:40:44,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 08:40:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:40:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 08:40:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:44,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:40:44,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 08:40:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:44,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:44,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:44,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:44,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:40:44,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:44,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 08:40:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:40:44,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094429162] [2020-09-25 08:40:44,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:40:44,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:40:44,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175247245] [2020-09-25 08:40:44,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:40:44,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:40:44,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:40:44,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:40:44,714 INFO L87 Difference]: Start difference. First operand 201 states and 214 transitions. Second operand 4 states. [2020-09-25 08:40:45,393 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:40:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:40:45,960 INFO L93 Difference]: Finished difference Result 282 states and 310 transitions. [2020-09-25 08:40:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:40:45,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-09-25 08:40:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:40:45,965 INFO L225 Difference]: With dead ends: 282 [2020-09-25 08:40:45,965 INFO L226 Difference]: Without dead ends: 221 [2020-09-25 08:40:45,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:40:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-25 08:40:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-09-25 08:40:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 08:40:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2020-09-25 08:40:46,007 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 157 [2020-09-25 08:40:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:40:46,010 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2020-09-25 08:40:46,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:40:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2020-09-25 08:40:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 08:40:46,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:40:46,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:40:46,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:40:46,014 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:40:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:40:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1213081293, now seen corresponding path program 1 times [2020-09-25 08:40:46,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:40:46,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452430279] [2020-09-25 08:40:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:40:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:47,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 08:40:47,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1784 [2020-09-25 08:40:47,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:47,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:40:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 08:40:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 08:40:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:40:48,176 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:40:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:40:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:40:48,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 08:40:48,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:40:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:40:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:48,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:40:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:48,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:48,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:40:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:48,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:40:48,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:40:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:40:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:48,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:40:48,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 08:40:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:40:48,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:48,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:40:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 08:40:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:40:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:40:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:40:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 08:40:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:40:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:40:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:40:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:40:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 08:40:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:40:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:40:48,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:40:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:40:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:40:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:40:48,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:40:48,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:40:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:40:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:40:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:40:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:40:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:40:48,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452430279] [2020-09-25 08:40:48,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:40:48,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:40:48,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141707570] [2020-09-25 08:40:48,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:40:48,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:40:48,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:40:48,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:40:48,706 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand 8 states. [2020-09-25 08:40:49,167 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:40:50,533 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:40:50,855 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:40:51,191 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:40:51,521 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:40:51,827 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:40:52,151 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:40:52,490 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:40:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:40:52,943 INFO L93 Difference]: Finished difference Result 374 states and 427 transitions. [2020-09-25 08:40:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:40:52,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-25 08:40:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:40:52,953 INFO L225 Difference]: With dead ends: 374 [2020-09-25 08:40:52,953 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 08:40:52,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:40:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 08:40:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 265. [2020-09-25 08:40:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-25 08:40:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-09-25 08:40:53,005 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 166 [2020-09-25 08:40:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:40:53,005 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-09-25 08:40:53,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:40:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-09-25 08:40:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 08:40:53,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:40:53,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:40:53,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:40:53,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:40:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:40:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1613053112, now seen corresponding path program 1 times [2020-09-25 08:40:53,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:40:53,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505403959] [2020-09-25 08:40:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:40:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:40:53,087 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:40:53,088 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:40:53,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:40:53,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:40:53 BoogieIcfgContainer [2020-09-25 08:40:53,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:40:53,121 INFO L168 Benchmark]: Toolchain (without parser) took 22143.19 ms. Allocated memory was 144.2 MB in the beginning and 519.6 MB in the end (delta: 375.4 MB). Free memory was 102.1 MB in the beginning and 338.8 MB in the end (delta: -236.7 MB). Peak memory consumption was 138.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:40:53,122 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.2 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 08:40:53,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.02 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 101.2 MB in the beginning and 172.7 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:40:53,124 INFO L168 Benchmark]: Boogie Preprocessor took 110.10 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:40:53,125 INFO L168 Benchmark]: RCFGBuilder took 1409.37 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 184.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:40:53,126 INFO L168 Benchmark]: TraceAbstraction took 19822.17 ms. Allocated memory was 236.5 MB in the beginning and 519.6 MB in the end (delta: 283.1 MB). Free memory was 184.4 MB in the beginning and 338.8 MB in the end (delta: -154.4 MB). Peak memory consumption was 128.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:40:53,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.2 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.02 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 101.2 MB in the beginning and 172.7 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.10 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1409.37 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 184.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19822.17 ms. Allocated memory was 236.5 MB in the beginning and 519.6 MB in the end (delta: 283.1 MB). Free memory was 184.4 MB in the beginning and 338.8 MB in the end (delta: -154.4 MB). Peak memory consumption was 128.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int pumpRunning = 0; [L49] int systemActive = 1; [L307] int cleanupTimeShifts = 4; [L403] int waterLevel = 1; [L404] int methaneLevelCritical = 0; [L652] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L380] int retValue_acc ; [L381] int tmp ; [L385] FCALL select_helpers() [L386] FCALL select_features() [L387] CALL, EXPR valid_product() [L253] int retValue_acc ; [L256] retValue_acc = 1 [L257] return (retValue_acc); [L387] RET, EXPR valid_product() [L387] tmp = valid_product() [L389] COND TRUE \read(tmp) [L391] FCALL setup() [L392] CALL runTest() [L374] CALL test() [L160] int splverifierCounter ; [L161] int tmp ; [L162] int tmp___0 ; [L163] int tmp___1 ; [L164] int tmp___2 ; [L167] splverifierCounter = 0 [L169] COND TRUE 1 [L171] COND TRUE splverifierCounter < 4 [L177] tmp = __VERIFIER_nondet_int() [L179] COND TRUE \read(tmp) [L181] CALL waterRise() [L421] COND TRUE waterLevel < 2 [L422] waterLevel = waterLevel + 1 [L181] RET waterRise() [L187] tmp___0 = __VERIFIER_nondet_int() [L189] COND FALSE !(\read(tmp___0)) [L197] tmp___2 = __VERIFIER_nondet_int() [L199] COND TRUE \read(tmp___2) [L212] CALL timeShift() [L56] COND FALSE !(\read(pumpRunning)) [L63] COND TRUE \read(systemActive) [L65] FCALL processEnvironment() [L71] CALL __utac_acc__Specification3_spec__1() [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L271] CALL, EXPR isMethaneLevelCritical() [L442] int retValue_acc ; [L445] retValue_acc = methaneLevelCritical [L446] return (retValue_acc); [L271] RET, EXPR isMethaneLevelCritical() [L271] tmp = isMethaneLevelCritical() [L273] COND FALSE !(\read(tmp)) [L277] CALL, EXPR getWaterLevel() [L474] int retValue_acc ; [L477] retValue_acc = waterLevel [L478] return (retValue_acc); [L277] RET, EXPR getWaterLevel() [L277] tmp___0 = getWaterLevel() [L279] COND TRUE tmp___0 == 2 [L281] CALL, EXPR isPumpRunning() [L111] int retValue_acc ; [L114] retValue_acc = pumpRunning [L115] return (retValue_acc); [L281] RET, EXPR isPumpRunning() [L281] tmp___1 = isPumpRunning() [L283] COND FALSE !(\read(tmp___1)) [L287] CALL __automaton_fail() [L302] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 578 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 556 SDtfs, 564 SDslu, 677 SDs, 0 SdLazy, 1140 SolverSat, 165 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 95 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 647 NumberOfCodeBlocks, 647 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 190716 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...