/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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:21:50,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:21:50,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:21:50,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:21:50,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:21:50,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:21:50,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:21:50,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:21:50,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:21:50,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:21:50,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:21:50,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:21:50,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:21:50,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:21:50,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:21:50,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:21:50,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:21:50,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:21:50,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:21:50,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:21:50,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:21:50,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:21:50,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:21:50,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:21:50,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:21:50,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:21:50,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:21:50,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:21:50,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:21:50,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:21:50,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:21:50,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:21:50,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:21:50,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:21:50,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:21:50,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:21:50,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:21:50,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:21:50,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:21:50,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:21:50,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:21:50,458 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 21:21:50,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:21:50,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:21:50,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:21:50,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:21:50,511 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:21:50,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:21:50,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:21:50,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:21:50,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:21:50,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:21:50,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:21:50,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:21:50,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:21:50,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:21:50,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:21:50,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:21:50,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:21:50,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:21:50,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:21:50,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:21:50,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:21:50,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:21:50,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:21:50,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:21:50,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:21:50,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:21:50,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:21:50,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:21:50,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:21:50,518 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 21:21:50,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:21:50,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:21:50,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:21:50,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:21:50,989 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:21:50,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-24 21:21:51,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81c3e59d2/f7d77f109c2542b992329c99fd9d5907/FLAGb80fd42b4 [2020-09-24 21:21:51,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:21:51,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-24 21:21:51,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81c3e59d2/f7d77f109c2542b992329c99fd9d5907/FLAGb80fd42b4 [2020-09-24 21:21:52,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81c3e59d2/f7d77f109c2542b992329c99fd9d5907 [2020-09-24 21:21:52,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:21:52,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:21:52,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:21:52,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:21:52,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:21:52,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52, skipping insertion in model container [2020-09-24 21:21:52,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:21:52,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:21:52,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:21:52,694 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:21:52,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:21:52,889 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:21:52,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52 WrapperNode [2020-09-24 21:21:52,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:21:52,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:21:52,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:21:52,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:21:52,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:52,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:53,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (1/1) ... [2020-09-24 21:21:53,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:21:53,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:21:53,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:21:53,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:21:53,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (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 21:21:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:21:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:21:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:21:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:21:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:21:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:21:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:21:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:21:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:21:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:21:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:21:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:21:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:21:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:21:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:21:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:21:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:21:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:21:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:21:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:21:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:21:53,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:21:53,140 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:21:53,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:21:53,141 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:21:53,141 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:21:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:21:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:21:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:21:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:21:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:21:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:21:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:21:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:21:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:21:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:21:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:21:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:21:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 21:21:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:21:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:21:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:21:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:21:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:21:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:21:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:21:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:21:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:21:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:21:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:21:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:21:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:21:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 21:21:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:21:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:21:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:21:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:21:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:21:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:21:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:21:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:21:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:21:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:21:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:21:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:21:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:21:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:21:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:21:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:21:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:21:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:21:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:21:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:21:54,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:21:54,261 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:21:54,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:54 BoogieIcfgContainer [2020-09-24 21:21:54,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:21:54,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:21:54,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:21:54,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:21:54,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:52" (1/3) ... [2020-09-24 21:21:54,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2234c64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:54, skipping insertion in model container [2020-09-24 21:21:54,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:52" (2/3) ... [2020-09-24 21:21:54,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2234c64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:54, skipping insertion in model container [2020-09-24 21:21:54,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:54" (3/3) ... [2020-09-24 21:21:54,278 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-09-24 21:21:54,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:21:54,301 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:21:54,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:21:54,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:21:54,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:21:54,356 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:21:54,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:21:54,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:21:54,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:21:54,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:21:54,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:21:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-09-24 21:21:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 21:21:54,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:21:54,410 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 21:21:54,410 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:21:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:21:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1883472631, now seen corresponding path program 1 times [2020-09-24 21:21:54,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:21:54,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604158726] [2020-09-24 21:21:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:21:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:59,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:59,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 21:21:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:21:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 21:21:59,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:21:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:21:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 21:21:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:22:00,513 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:22:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:22:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:00,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:22:00,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-24 21:22:00,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:22:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:22:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:22:01,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:22:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:01,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:22:01,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:22:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:22:01,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:22:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:01,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:22:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 21:22:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:01,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:22:01,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 21:22:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:22:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:22:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 21:22:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:01,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:01,277 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 21:22:01,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604158726] [2020-09-24 21:22:01,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:22:01,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:22:01,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862055767] [2020-09-24 21:22:01,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:22:01,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:22:01,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:22:01,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:22:01,325 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 8 states. [2020-09-24 21:22:02,215 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:22:04,023 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:22:04,416 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:22:04,857 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:22:05,334 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:22:05,629 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:22:05,930 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:22:06,265 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:22:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:22:07,744 INFO L93 Difference]: Finished difference Result 671 states and 831 transitions. [2020-09-24 21:22:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:22:07,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 21:22:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:22:07,772 INFO L225 Difference]: With dead ends: 671 [2020-09-24 21:22:07,772 INFO L226 Difference]: Without dead ends: 464 [2020-09-24 21:22:07,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:22:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-24 21:22:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 416. [2020-09-24 21:22:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-09-24 21:22:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-09-24 21:22:07,942 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 153 [2020-09-24 21:22:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:22:07,943 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-09-24 21:22:07,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:22:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-09-24 21:22:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 21:22:07,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:22:07,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:22:07,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:22:07,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:22:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:22:07,958 INFO L82 PathProgramCache]: Analyzing trace with hash 886163450, now seen corresponding path program 1 times [2020-09-24 21:22:07,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:22:07,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082940812] [2020-09-24 21:22:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:22:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 21:22:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-09-24 21:22:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:22:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:22:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:22:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:09,555 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:22:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:22:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:09,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:22:09,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 21:22:09,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:22:09,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:09,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:22:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:09,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:09,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:09,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:22:09,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:09,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:22:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:09,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:09,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:09,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:22:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:09,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:09,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:22:09,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:22:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:10,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:10,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:22:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:10,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:10,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:22:10,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:22:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:22:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:22:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:10,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:10,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:10,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:10,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 21:22:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:10,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:10,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:10,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:10,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 21:22:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:22:10,100 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 21:22:10,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082940812] [2020-09-24 21:22:10,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:22:10,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:22:10,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063839596] [2020-09-24 21:22:10,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:22:10,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:22:10,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:22:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:22:10,106 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 6 states. [2020-09-24 21:22:10,615 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:22:11,411 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:22:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:22:14,340 INFO L93 Difference]: Finished difference Result 1294 states and 1612 transitions. [2020-09-24 21:22:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:22:14,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-24 21:22:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:22:14,353 INFO L225 Difference]: With dead ends: 1294 [2020-09-24 21:22:14,353 INFO L226 Difference]: Without dead ends: 988 [2020-09-24 21:22:14,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:22:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-09-24 21:22:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 879. [2020-09-24 21:22:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-24 21:22:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1039 transitions. [2020-09-24 21:22:14,497 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1039 transitions. Word has length 168 [2020-09-24 21:22:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:22:14,498 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1039 transitions. [2020-09-24 21:22:14,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:22:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1039 transitions. [2020-09-24 21:22:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 21:22:14,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:22:14,505 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 21:22:14,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:22:14,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:22:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:22:14,506 INFO L82 PathProgramCache]: Analyzing trace with hash -755283321, now seen corresponding path program 1 times [2020-09-24 21:22:14,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:22:14,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18571428] [2020-09-24 21:22:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:22:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:14,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:19,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 21:22:19,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:22:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-24 21:22:19,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:22:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:22:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:22:19,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:22:19,951 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:22:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:22:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:22:20,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 21:22:20,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:22:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:22:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:20,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:22:20,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:22:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:22:20,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:22:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:22:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:20,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:22:20,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:22:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:22:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:20,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:20,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:22:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:22:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:22:20,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:22:20,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:22:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:22:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 21:22:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:22:20,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:22:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:22:20,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:22:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:22:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:22:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:22:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:22:20,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:22:20,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:22:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:22:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:22:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:22:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:22:20,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:22:20,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:22:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:22:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:22:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 21:22:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:20,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:22:20,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:20,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 21:22:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:20,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:20,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 21:22:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:22:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:22:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:22:20,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:22:20,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:22:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:22:20,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:22:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:22:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:22:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:22:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:22:20,622 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 21:22:20,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18571428] [2020-09-24 21:22:20,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:22:20,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:22:20,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417109980] [2020-09-24 21:22:20,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:22:20,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:22:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:22:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:22:20,626 INFO L87 Difference]: Start difference. First operand 879 states and 1039 transitions. Second operand 8 states. [2020-09-24 21:22:21,147 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:22:22,935 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:22:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:22:24,967 INFO L93 Difference]: Finished difference Result 2312 states and 3025 transitions. [2020-09-24 21:22:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:22:24,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-24 21:22:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:22:24,979 INFO L225 Difference]: With dead ends: 2312 [2020-09-24 21:22:24,979 INFO L226 Difference]: Without dead ends: 1543 [2020-09-24 21:22:24,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:22:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-09-24 21:22:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1266. [2020-09-24 21:22:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-09-24 21:22:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1496 transitions. [2020-09-24 21:22:25,206 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1496 transitions. Word has length 181 [2020-09-24 21:22:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:22:25,207 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 1496 transitions. [2020-09-24 21:22:25,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:22:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1496 transitions. [2020-09-24 21:22:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 21:22:25,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:22:25,212 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 21:22:25,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:22:25,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:22:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:22:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash 82436204, now seen corresponding path program 1 times [2020-09-24 21:22:25,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:22:25,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025492226] [2020-09-24 21:22:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:22:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:22:25,292 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:22:25,292 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:22:25,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:22:25,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:22:25 BoogieIcfgContainer [2020-09-24 21:22:25,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:22:25,339 INFO L168 Benchmark]: Toolchain (without parser) took 33237.52 ms. Allocated memory was 141.6 MB in the beginning and 675.8 MB in the end (delta: 534.2 MB). Free memory was 103.3 MB in the beginning and 581.8 MB in the end (delta: -478.5 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:22:25,340 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:22:25,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.98 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 171.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:22:25,343 INFO L168 Benchmark]: Boogie Preprocessor took 117.31 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 166.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:22:25,350 INFO L168 Benchmark]: RCFGBuilder took 1260.14 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 166.8 MB in the beginning and 170.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:22:25,351 INFO L168 Benchmark]: TraceAbstraction took 31066.82 ms. Allocated memory was 235.9 MB in the beginning and 675.8 MB in the end (delta: 439.9 MB). Free memory was 169.2 MB in the beginning and 581.8 MB in the end (delta: -412.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:22:25,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.98 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 171.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.31 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 166.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1260.14 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 166.8 MB in the beginning and 170.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31066.82 ms. Allocated memory was 235.9 MB in the beginning and 675.8 MB in the end (delta: 439.9 MB). Free memory was 169.2 MB in the beginning and 581.8 MB in the end (delta: -412.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 915 SDtfs, 2196 SDslu, 1263 SDs, 0 SdLazy, 2942 SolverSat, 846 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1266occurred 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: 0.5s AutomataMinimizationTime, 3 MinimizatonAttempts, 434 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 679 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 499 ConstructedInterpolants, 0 QuantifiedInterpolants, 263770 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...