/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=WIDEST --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_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:02:55,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:02:55,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:02:55,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:02:55,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:02:55,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:02:55,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:02:55,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:02:55,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:02:55,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:02:55,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:02:55,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:02:55,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:02:55,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:02:55,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:02:55,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:02:55,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:02:55,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:02:55,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:02:55,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:02:55,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:02:55,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:02:55,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:02:55,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:02:55,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:02:55,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:02:55,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:02:55,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:02:55,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:02:55,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:02:55,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:02:55,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:02:55,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:02:55,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:02:55,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:02:55,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:02:55,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:02:55,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:02:55,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:02:55,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:02:55,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:02:55,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:02:55,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:02:55,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:02:55,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:02:55,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:02:55,963 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:02:55,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:02:55,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:02:55,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:02:55,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:02:55,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:02:55,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:02:55,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:02:55,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:02:55,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:02:55,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:02:55,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:02:55,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:02:55,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:02:55,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:02:55,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:02:55,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:02:55,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:02:55,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:02:55,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:02:55,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:02:55,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:02:55,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:02:55,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:02:55,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:02:55,968 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:02:56,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:02:56,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:02:56,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:02:56,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:02:56,464 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:02:56,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-09-25 03:02:56,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2831da978/d7fb1e5c9ddf4310b3d1e87653c0a179/FLAG31ccc5155 [2020-09-25 03:02:57,195 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:02:57,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-09-25 03:02:57,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2831da978/d7fb1e5c9ddf4310b3d1e87653c0a179/FLAG31ccc5155 [2020-09-25 03:02:57,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2831da978/d7fb1e5c9ddf4310b3d1e87653c0a179 [2020-09-25 03:02:57,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:02:57,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:02:57,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:02:57,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:02:57,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:02:57,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:02:57" (1/1) ... [2020-09-25 03:02:57,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:57, skipping insertion in model container [2020-09-25 03:02:57,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:02:57" (1/1) ... [2020-09-25 03:02:57,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:02:57,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:02:57,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:02:58,009 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:02:58,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:02:58,180 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:02:58,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58 WrapperNode [2020-09-25 03:02:58,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:02:58,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:02:58,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:02:58,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:02:58,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... [2020-09-25 03:02:58,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:02:58,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:02:58,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:02:58,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:02:58,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:02:58,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:02:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:02:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 03:02:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 03:02:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 03:02:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 03:02:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 03:02:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 03:02:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 03:02:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 03:02:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 03:02:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 03:02:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 03:02:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 03:02:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 03:02:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 03:02:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 03:02:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 03:02:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 03:02:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 03:02:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 03:02:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 03:02:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 03:02:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 03:02:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 03:02:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 03:02:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 03:02:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 03:02:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 03:02:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 03:02:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 03:02:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 03:02:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 03:02:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 03:02:58,388 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 03:02:58,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:02:58,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 03:02:58,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 03:02:58,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 03:02:58,388 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 03:02:58,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 03:02:58,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 03:02:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:02:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:02:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 03:02:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 03:02:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 03:02:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:02:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 03:02:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 03:02:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 03:02:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 03:02:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 03:02:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 03:02:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 03:02:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 03:02:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 03:02:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 03:02:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 03:02:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:02:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 03:02:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:02:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 03:02:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 03:02:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:02:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 03:02:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 03:02:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 03:02:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 03:02:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 03:02:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 03:02:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 03:02:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 03:02:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:02:59,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:02:59,554 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 03:02:59,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:02:59 BoogieIcfgContainer [2020-09-25 03:02:59,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:02:59,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:02:59,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:02:59,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:02:59,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:02:57" (1/3) ... [2020-09-25 03:02:59,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382d3e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:02:59, skipping insertion in model container [2020-09-25 03:02:59,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:58" (2/3) ... [2020-09-25 03:02:59,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382d3e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:02:59, skipping insertion in model container [2020-09-25 03:02:59,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:02:59" (3/3) ... [2020-09-25 03:02:59,570 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-09-25 03:02:59,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:02:59,593 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:02:59,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:02:59,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:02:59,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:02:59,654 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:02:59,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:02:59,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:02:59,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:02:59,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:02:59,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:02:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-09-25 03:02:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 03:02:59,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:02:59,709 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] [2020-09-25 03:02:59,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:02:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:02:59,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1964738656, now seen corresponding path program 1 times [2020-09-25 03:02:59,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:02:59,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824296034] [2020-09-25 03:02:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:05,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:05,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 03:03:05,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:03:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-25 03:03:05,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:03:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 03:03:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 03:03:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 03:03:05,708 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 03:03:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:03:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:06,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:03:06,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:06,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:03:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:06,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:06,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:03:06,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:03:06,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 03:03:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:06,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:03:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:03:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:03:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 03:03:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:06,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:06,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:06,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:06,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824296034] [2020-09-25 03:03:06,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:06,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:03:06,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844310196] [2020-09-25 03:03:06,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:03:06,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:06,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:03:06,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:03:06,349 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 8 states. [2020-09-25 03:03:07,229 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:08,409 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:08,737 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:03:09,188 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:09,632 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:09,982 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:03:10,351 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:10,673 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:03:12,935 INFO L93 Difference]: Finished difference Result 682 states and 839 transitions. [2020-09-25 03:03:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:03:12,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-25 03:03:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:03:12,960 INFO L225 Difference]: With dead ends: 682 [2020-09-25 03:03:12,960 INFO L226 Difference]: Without dead ends: 471 [2020-09-25 03:03:12,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:03:12,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-25 03:03:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 424. [2020-09-25 03:03:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-09-25 03:03:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 480 transitions. [2020-09-25 03:03:13,167 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 480 transitions. Word has length 142 [2020-09-25 03:03:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:03:13,171 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 480 transitions. [2020-09-25 03:03:13,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:03:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 480 transitions. [2020-09-25 03:03:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 03:03:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:03:13,188 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] [2020-09-25 03:03:13,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:03:13,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:03:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:03:13,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1633084880, now seen corresponding path program 1 times [2020-09-25 03:03:13,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:03:13,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184911726] [2020-09-25 03:03:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 03:03:18,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:03:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 03:03:18,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:03:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 03:03:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 03:03:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,667 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:18,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:18,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 03:03:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:03:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:18,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:19,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:19,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:19,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:03:19,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:19,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:19,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:19,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:19,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:19,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 03:03:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:19,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:19,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:19,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:03:19,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:03:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 03:03:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:19,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:19,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:19,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 03:03:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:19,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:19,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:19,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:03:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:19,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184911726] [2020-09-25 03:03:19,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:19,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:03:19,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862695102] [2020-09-25 03:03:19,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:03:19,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:19,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:03:19,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:03:19,089 INFO L87 Difference]: Start difference. First operand 424 states and 480 transitions. Second operand 5 states. [2020-09-25 03:03:19,561 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:03:22,294 INFO L93 Difference]: Finished difference Result 1132 states and 1366 transitions. [2020-09-25 03:03:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:03:22,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 03:03:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:03:22,304 INFO L225 Difference]: With dead ends: 1132 [2020-09-25 03:03:22,304 INFO L226 Difference]: Without dead ends: 818 [2020-09-25 03:03:22,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:03:22,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-09-25 03:03:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 713. [2020-09-25 03:03:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-09-25 03:03:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 821 transitions. [2020-09-25 03:03:22,446 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 821 transitions. Word has length 148 [2020-09-25 03:03:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:03:22,448 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 821 transitions. [2020-09-25 03:03:22,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:03:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 821 transitions. [2020-09-25 03:03:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 03:03:22,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:03:22,456 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] [2020-09-25 03:03:22,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:03:22,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:03:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:03:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash 157670436, now seen corresponding path program 1 times [2020-09-25 03:03:22,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:03:22,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188063921] [2020-09-25 03:03:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:27,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:27,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 03:03:27,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:03:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 03:03:27,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:03:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 03:03:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 03:03:27,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:27,930 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:27,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:28,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-25 03:03:28,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:03:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:03:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:28,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:03:28,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:28,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 03:03:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:28,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:03:28,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:03:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-25 03:03:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:03:28,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:03:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:03:28,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:03:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:03:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:03:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:03:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:03:28,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:03:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:03:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:03:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:03:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 03:03:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 03:03:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:28,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188063921] [2020-09-25 03:03:28,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:28,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:03:28,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945489783] [2020-09-25 03:03:28,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:03:28,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:28,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:03:28,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:03:28,592 INFO L87 Difference]: Start difference. First operand 713 states and 821 transitions. Second operand 8 states. [2020-09-25 03:03:29,087 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:30,692 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:03:32,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:03:32,789 INFO L93 Difference]: Finished difference Result 1878 states and 2439 transitions. [2020-09-25 03:03:32,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:03:32,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 161 [2020-09-25 03:03:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:03:32,798 INFO L225 Difference]: With dead ends: 1878 [2020-09-25 03:03:32,798 INFO L226 Difference]: Without dead ends: 1275 [2020-09-25 03:03:32,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:03:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-09-25 03:03:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1045. [2020-09-25 03:03:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-09-25 03:03:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1233 transitions. [2020-09-25 03:03:32,952 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1233 transitions. Word has length 161 [2020-09-25 03:03:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:03:32,953 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1233 transitions. [2020-09-25 03:03:32,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:03:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1233 transitions. [2020-09-25 03:03:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 03:03:32,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:03:32,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:03:32,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:03:32,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:03:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:03:32,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1908260632, now seen corresponding path program 1 times [2020-09-25 03:03:32,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:03:32,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140055789] [2020-09-25 03:03:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:33,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 03:03:38,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:03:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:03:38,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:03:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 03:03:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 03:03:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,323 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:38,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 03:03:38,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:03:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:38,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:38,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:38,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:03:38,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:38,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 03:03:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:38,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:03:38,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:03:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 03:03:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:38,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:03:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:03:38,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:03:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:03:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 03:03:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:38,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:38,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 03:03:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:38,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:38,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:38,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:03:38,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:03:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:38,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140055789] [2020-09-25 03:03:38,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:38,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:03:38,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158925966] [2020-09-25 03:03:38,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:03:38,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:38,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:03:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:03:38,825 INFO L87 Difference]: Start difference. First operand 1045 states and 1233 transitions. Second operand 11 states. [2020-09-25 03:03:39,423 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:41,002 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:41,317 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:03:41,642 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:41,956 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 03:03:42,248 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 03:03:42,921 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:43,230 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:43,643 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190