/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=LOWLEXORDER --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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:22:39,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:22:39,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:22:39,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:22:39,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:22:39,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:22:39,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:22:39,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:22:39,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:22:39,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:22:39,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:22:39,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:22:39,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:22:39,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:22:39,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:22:39,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:22:39,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:22:39,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:22:39,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:22:39,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:22:39,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:22:39,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:22:39,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:22:39,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:22:39,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:22:39,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:22:39,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:22:39,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:22:39,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:22:39,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:22:39,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:22:39,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:22:39,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:22:39,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:22:39,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:22:39,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:22:39,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:22:39,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:22:39,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:22:39,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:22:39,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:22:39,369 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 21:22:39,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:22:39,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:22:39,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:22:39,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:22:39,396 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:22:39,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:22:39,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:22:39,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:22:39,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:22:39,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:22:39,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:22:39,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:22:39,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:22:39,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:22:39,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:22:39,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:22:39,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:22:39,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:22:39,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:22:39,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:22:39,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:22:39,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:22:39,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:22:39,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:22:39,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:22:39,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:22:39,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:22:39,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:22:39,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:22:39,401 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:22:39,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:22:39,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:22:39,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:22:39,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:22:39,886 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:22:39,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-09-24 21:22:39,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15cceb2a3/b5e7e41b12834384993056231a5d2b04/FLAG8c70c0a4b [2020-09-24 21:22:40,593 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:22:40,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-09-24 21:22:40,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15cceb2a3/b5e7e41b12834384993056231a5d2b04/FLAG8c70c0a4b [2020-09-24 21:22:40,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15cceb2a3/b5e7e41b12834384993056231a5d2b04 [2020-09-24 21:22:40,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:22:40,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:22:40,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:22:40,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:22:40,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:22:40,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:22:40" (1/1) ... [2020-09-24 21:22:40,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694adced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:40, skipping insertion in model container [2020-09-24 21:22:40,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:22:40" (1/1) ... [2020-09-24 21:22:40,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:22:40,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:22:41,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:22:41,501 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:22:41,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:22:41,660 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:22:41,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41 WrapperNode [2020-09-24 21:22:41,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:22:41,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:22:41,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:22:41,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:22:41,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (1/1) ... [2020-09-24 21:22:41,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:22:41,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:22:41,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:22:41,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:22:41,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (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 21:22:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:22:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:22:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:22:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:22:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:22:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:22:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:22:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:22:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:22:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:22:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:22:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:22:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:22:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:22:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:22:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 21:22:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:22:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 21:22:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:22:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:22:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:22:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:22:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:22:41,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:22:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:22:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:22:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:22:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:22:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:22:41,856 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:22:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:22:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:22:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:22:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:22:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:22:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:22:41,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 21:22:41,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:22:41,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:22:41,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:22:41,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:22:41,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:22:41,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:22:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:22:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:22:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:22:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:22:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:22:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:22:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:22:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:22:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:22:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:22:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:22:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:22:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:22:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:22:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:22:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:22:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:22:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:22:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:22:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:22:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 21:22:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:22:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:22:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:22:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:22:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:22:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 21:22:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:22:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 21:22:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:22:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:22:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:22:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:22:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:22:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:22:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:22:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:22:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:22:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:22:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:22:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:22:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:22:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:22:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:22:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:22:43,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:22:43,092 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:22:43,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:22:43 BoogieIcfgContainer [2020-09-24 21:22:43,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:22:43,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:22:43,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:22:43,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:22:43,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:22:40" (1/3) ... [2020-09-24 21:22:43,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12770ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:22:43, skipping insertion in model container [2020-09-24 21:22:43,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:22:41" (2/3) ... [2020-09-24 21:22:43,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12770ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:22:43, skipping insertion in model container [2020-09-24 21:22:43,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:22:43" (3/3) ... [2020-09-24 21:22:43,110 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2020-09-24 21:22:43,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:22:43,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:22:43,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:22:43,198 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:22:43,199 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:22:43,199 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:22:43,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:22:43,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:22:43,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:22:43,200 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:22:43,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:22:43,239 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states. [2020-09-24 21:22:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 21:22:43,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:22:43,275 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 21:22:43,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:22:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:22:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1710422987, now seen corresponding path program 1 times [2020-09-24 21:22:43,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:22:43,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074515259] [2020-09-24 21:22:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:22:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:48,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 21:22:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:22:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 21:22:48,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:22:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:22:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 21:22:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:22:49,244 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:22:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:22:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:22:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 21:22:49,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:22:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:22:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:22:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:22:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:49,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:22:49,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:22:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:49,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:22:49,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:22:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:49,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:22:49,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 21:22:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:49,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:49,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 21:22:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:49,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:49,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 21:22:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:49,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:49,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:49,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:49,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:49,682 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 21:22:49,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074515259] [2020-09-24 21:22:49,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:22:49,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:22:49,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717429724] [2020-09-24 21:22:49,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:22:49,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:22:49,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:22:49,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:22:49,715 INFO L87 Difference]: Start difference. First operand 358 states. Second operand 4 states. [2020-09-24 21:22:50,282 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:22:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:22:52,978 INFO L93 Difference]: Finished difference Result 820 states and 992 transitions. [2020-09-24 21:22:52,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:22:52,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-24 21:22:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:22:53,004 INFO L225 Difference]: With dead ends: 820 [2020-09-24 21:22:53,005 INFO L226 Difference]: Without dead ends: 573 [2020-09-24 21:22:53,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:22:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-24 21:22:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 498. [2020-09-24 21:22:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-09-24 21:22:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 563 transitions. [2020-09-24 21:22:53,191 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 563 transitions. Word has length 153 [2020-09-24 21:22:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:22:53,192 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 563 transitions. [2020-09-24 21:22:53,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:22:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 563 transitions. [2020-09-24 21:22:53,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 21:22:53,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:22:53,198 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, 1, 1, 1, 1] [2020-09-24 21:22:53,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:22:53,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:22:53,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:22:53,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2046203519, now seen corresponding path program 1 times [2020-09-24 21:22:53,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:22:53,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009621538] [2020-09-24 21:22:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:22:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:53,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 21:22:58,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:22:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 21:22:58,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:22:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:22:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 21:22:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:58,556 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:22:58,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:22:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:22:58,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 21:22:58,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:22:58,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:22:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:58,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:58,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:22:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:22:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:22:58,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:22:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:58,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:58,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 21:22:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:58,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:22:58,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:22:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:22:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:22:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:22:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:22:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:22:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:22:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:22:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:22:59,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:22:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:22:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:22:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:22:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:22:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:22:59,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:22:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:22:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:22:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:22:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:59,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 21:22:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:59,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 21:22:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 21:22:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:59,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:59,095 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 21:22:59,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009621538] [2020-09-24 21:22:59,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:22:59,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:22:59,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731156790] [2020-09-24 21:22:59,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:22:59,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:22:59,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:22:59,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:22:59,100 INFO L87 Difference]: Start difference. First operand 498 states and 563 transitions. Second operand 6 states. [2020-09-24 21:22:59,560 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:23:01,202 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:23:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:23:02,867 INFO L93 Difference]: Finished difference Result 1360 states and 1668 transitions. [2020-09-24 21:23:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:23:02,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-24 21:23:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:23:02,877 INFO L225 Difference]: With dead ends: 1360 [2020-09-24 21:23:02,877 INFO L226 Difference]: Without dead ends: 972 [2020-09-24 21:23:02,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:23:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-24 21:23:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 829. [2020-09-24 21:23:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-09-24 21:23:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 941 transitions. [2020-09-24 21:23:03,000 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 941 transitions. Word has length 181 [2020-09-24 21:23:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:23:03,001 INFO L479 AbstractCegarLoop]: Abstraction has 829 states and 941 transitions. [2020-09-24 21:23:03,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:23:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 941 transitions. [2020-09-24 21:23:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 21:23:03,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:23:03,005 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] [2020-09-24 21:23:03,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:23:03,005 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:23:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:23:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1074637363, now seen corresponding path program 1 times [2020-09-24 21:23:03,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:23:03,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965843207] [2020-09-24 21:23:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:23:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 21:23:04,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-09-24 21:23:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:23:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:23:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 21:23:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,112 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:23:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:23:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:23:05,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 21:23:05,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:23:05,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:23:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:23:05,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:23:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:23:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:23:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:23:05,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:23:05,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:23:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:23:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:23:05,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:23:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:23:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:23:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:23:05,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:23:05,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:23:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 21:23:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:23:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:23:05,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:23:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 21:23:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:23:05,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:23:05,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:23:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:23:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 21:23:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:23:05,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:23:05,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:23:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:23:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:23:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:23:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 21:23:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:23:05,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:23:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:23:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:23:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:23:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:23:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:23:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:23:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:23:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:23:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:23:05,560 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 21:23:05,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965843207] [2020-09-24 21:23:05,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:23:05,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 21:23:05,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761736282] [2020-09-24 21:23:05,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:23:05,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:23:05,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:23:05,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:23:05,564 INFO L87 Difference]: Start difference. First operand 829 states and 941 transitions. Second operand 9 states. [2020-09-24 21:23:06,037 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:23:07,542 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:23:08,182 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-24 21:23:08,532 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:23:08,883 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:23:09,145 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:23:09,467 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:23:09,745 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:23:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:23:11,911 INFO L93 Difference]: Finished difference Result 2121 states and 2569 transitions. [2020-09-24 21:23:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:23:11,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 21:23:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:23:11,925 INFO L225 Difference]: With dead ends: 2121 [2020-09-24 21:23:11,925 INFO L226 Difference]: Without dead ends: 1402 [2020-09-24 21:23:11,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:23:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-09-24 21:23:12,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1279. [2020-09-24 21:23:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-09-24 21:23:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1483 transitions. [2020-09-24 21:23:12,127 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1483 transitions. Word has length 172 [2020-09-24 21:23:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:23:12,129 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1483 transitions. [2020-09-24 21:23:12,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:23:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1483 transitions. [2020-09-24 21:23:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 21:23:12,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:23:12,134 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 21:23:12,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:23:12,135 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:23:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:23:12,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1555840203, now seen corresponding path program 1 times [2020-09-24 21:23:12,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:23:12,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718959851] [2020-09-24 21:23:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:23:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:23:12,226 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:23:12,226 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:23:12,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:23:12,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:23:12 BoogieIcfgContainer [2020-09-24 21:23:12,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:23:12,262 INFO L168 Benchmark]: Toolchain (without parser) took 31346.57 ms. Allocated memory was 147.3 MB in the beginning and 600.8 MB in the end (delta: 453.5 MB). Free memory was 101.4 MB in the beginning and 91.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 463.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:23:12,263 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:23:12,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.14 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 171.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:23:12,265 INFO L168 Benchmark]: Boogie Preprocessor took 110.20 ms. Allocated memory is still 205.0 MB. Free memory was 171.0 MB in the beginning and 167.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:23:12,266 INFO L168 Benchmark]: RCFGBuilder took 1327.72 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 167.0 MB in the beginning and 167.5 MB in the end (delta: -535.1 kB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:23:12,267 INFO L168 Benchmark]: TraceAbstraction took 29158.64 ms. Allocated memory was 236.5 MB in the beginning and 600.8 MB in the end (delta: 364.4 MB). Free memory was 167.5 MB in the beginning and 91.4 MB in the end (delta: 76.2 MB). Peak memory consumption was 440.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:23:12,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.14 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 171.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.20 ms. Allocated memory is still 205.0 MB. Free memory was 171.0 MB in the beginning and 167.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1327.72 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 167.0 MB in the beginning and 167.5 MB in the end (delta: -535.1 kB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29158.64 ms. Allocated memory was 236.5 MB in the beginning and 600.8 MB in the end (delta: 364.4 MB). Free memory was 167.5 MB in the beginning and 91.4 MB in the end (delta: 76.2 MB). Peak memory consumption was 440.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L188] int pumpRunning = 0; [L189] int systemActive = 1; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L827] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L445] int splverifierCounter ; [L446] int tmp ; [L447] int tmp___0 ; [L448] int tmp___1 ; [L449] int tmp___2 ; [L452] splverifierCounter = 0 [L454] COND TRUE 1 [L456] COND TRUE splverifierCounter < 4 [L462] tmp = __VERIFIER_nondet_int() [L464] COND TRUE \read(tmp) [L466] CALL waterRise() [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L466] RET waterRise() [L472] tmp___0 = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp___0)) [L482] tmp___2 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___2)) [L488] tmp___1 = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp___1) [L492] CALL stopSystem() [L432] COND FALSE !(\read(pumpRunning)) [L439] systemActive = 0 [L492] RET stopSystem() [L499] CALL timeShift() [L196] COND FALSE !(\read(pumpRunning)) [L203] COND FALSE !(\read(systemActive)) [L211] CALL __utac_acc__Specification3_spec__1() [L625] int tmp ; [L626] int tmp___0 ; [L627] int tmp___1 ; [L631] CALL, EXPR isMethaneLevelCritical() [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L631] RET, EXPR isMethaneLevelCritical() [L631] tmp = isMethaneLevelCritical() [L633] COND FALSE !(\read(tmp)) [L637] CALL, EXPR getWaterLevel() [L583] int retValue_acc ; [L586] retValue_acc = waterLevel [L587] return (retValue_acc); [L637] RET, EXPR getWaterLevel() [L637] tmp___0 = getWaterLevel() [L639] COND TRUE tmp___0 == 2 [L641] CALL, EXPR isPumpRunning() [L346] int retValue_acc ; [L349] retValue_acc = pumpRunning [L350] return (retValue_acc); [L641] RET, EXPR isPumpRunning() [L641] tmp___1 = isPumpRunning() [L643] COND FALSE !(\read(tmp___1)) [L647] CALL __automaton_fail() [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 670 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1021 SDtfs, 1651 SDslu, 1078 SDs, 0 SdLazy, 2936 SolverSat, 598 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1279occurred 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, 341 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 683 NumberOfCodeBlocks, 683 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 231956 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...