/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:10:10,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:10:10,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:10:10,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:10:10,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:10:10,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:10:10,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:10:10,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:10:10,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:10:10,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:10:10,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:10:10,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:10:10,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:10:10,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:10:10,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:10:10,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:10:10,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:10:10,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:10:10,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:10:10,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:10:10,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:10:10,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:10:10,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:10:10,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:10:10,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:10:10,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:10:10,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:10:10,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:10:10,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:10:10,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:10:10,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:10:10,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:10:10,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:10:10,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:10:10,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:10:10,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:10:10,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:10:10,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:10:10,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:10:10,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:10:10,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:10:10,910 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 [2020-09-21 11:10:10,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:10:10,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:10:10,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:10:10,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:10:10,944 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:10:10,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:10:10,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:10:10,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:10:10,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:10:10,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:10:10,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:10:10,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:10:10,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:10:10,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:10:10,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:10:10,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:10:10,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:10:10,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:10:10,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:10:10,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:10:10,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:10:10,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:10,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:10:10,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:10:10,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:10:10,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:10:10,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:10:10,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:10:10,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:10:10,949 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:10:11,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:10:11,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:10:11,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:10:11,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:10:11,474 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:10:11,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-09-21 11:10:11,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0759880e6/6b1fd76af3f143a383a24ea05de515fc/FLAGdf310170d [2020-09-21 11:10:12,196 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:10:12,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-09-21 11:10:12,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0759880e6/6b1fd76af3f143a383a24ea05de515fc/FLAGdf310170d [2020-09-21 11:10:12,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0759880e6/6b1fd76af3f143a383a24ea05de515fc [2020-09-21 11:10:12,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:10:12,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:10:12,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:12,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:10:12,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:10:12,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:12" (1/1) ... [2020-09-21 11:10:12,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c56d103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:12, skipping insertion in model container [2020-09-21 11:10:12,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:12" (1/1) ... [2020-09-21 11:10:12,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:10:12,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:10:12,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:13,092 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:10:13,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:13,223 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:10:13,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13 WrapperNode [2020-09-21 11:10:13,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:13,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:10:13,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:10:13,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:10:13,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (1/1) ... [2020-09-21 11:10:13,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:10:13,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:10:13,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:10:13,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:10:13,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (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 [2020-09-21 11:10:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:10:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:10:13,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:13,455 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:10:13,455 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:10:13,455 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:10:13,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:10:13,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:10:13,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:10:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:10:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:10:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:10:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:10:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:10:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:10:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:10:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:10:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 11:10:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:10:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 11:10:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:10:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:10:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:10:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:10:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:10:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:10:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:10:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:10:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:10:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:10:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:10:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:10:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:10:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:10:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:10:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:10:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:10:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:10:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:10:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:10:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:10:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:10:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:10:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:10:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:10:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:10:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:10:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:10:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:10:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:10:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:10:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:10:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:10:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:10:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:10:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:10:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:10:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:10:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:10:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:10:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:10:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:10:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 11:10:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:10:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 11:10:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:10:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:10:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:10:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:10:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:10:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:10:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:10:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:10:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:10:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:10:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:14,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:14,606 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:14,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:14 BoogieIcfgContainer [2020-09-21 11:10:14,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:14,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:14,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:14,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:14,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:10:12" (1/3) ... [2020-09-21 11:10:14,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6a1741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:14, skipping insertion in model container [2020-09-21 11:10:14,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:13" (2/3) ... [2020-09-21 11:10:14,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6a1741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:14, skipping insertion in model container [2020-09-21 11:10:14,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:14" (3/3) ... [2020-09-21 11:10:14,622 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2020-09-21 11:10:14,633 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:14,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:14,666 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:14,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:14,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:14,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:14,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:14,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:14,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:14,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:14,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-09-21 11:10:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:14,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:14,741 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] [2020-09-21 11:10:14,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2139663592, now seen corresponding path program 1 times [2020-09-21 11:10:14,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:14,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375165656] [2020-09-21 11:10:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,065 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:10:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,482 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,500 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:15,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,570 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,571 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:15,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,577 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,577 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,578 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,578 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:15,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,584 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,585 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,585 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,585 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,592 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,593 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,608 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,608 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,609 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,609 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:15,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:15,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:15,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:15,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:15,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:15,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:15,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:15,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375165656] [2020-09-21 11:10:15,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:15,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:15,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839671121] [2020-09-21 11:10:15,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:15,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:15,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:15,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:15,701 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-09-21 11:10:16,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:16,895 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-09-21 11:10:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:16,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:16,915 INFO L225 Difference]: With dead ends: 305 [2020-09-21 11:10:16,915 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 11:10:16,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 11:10:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-09-21 11:10:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-21 11:10:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-09-21 11:10:17,026 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-09-21 11:10:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:17,043 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-09-21 11:10:17,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-09-21 11:10:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:17,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:17,048 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] [2020-09-21 11:10:17,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:17,049 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:17,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1114338562, now seen corresponding path program 1 times [2020-09-21 11:10:17,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:17,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785486331] [2020-09-21 11:10:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,153 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,154 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:17,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:10:17,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,508 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,518 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,519 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,519 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,519 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,564 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,564 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,564 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,569 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,574 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,575 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,575 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,579 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,580 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,580 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,586 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:17,592 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:17,592 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:17,593 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:17,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785486331] [2020-09-21 11:10:17,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:17,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:17,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369699387] [2020-09-21 11:10:17,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:17,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:17,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:17,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:17,607 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-09-21 11:10:18,059 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:18,983 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-09-21 11:10:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:18,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:18,988 INFO L225 Difference]: With dead ends: 232 [2020-09-21 11:10:18,988 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 11:10:18,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 11:10:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-09-21 11:10:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-21 11:10:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-09-21 11:10:19,027 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-09-21 11:10:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:19,027 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-09-21 11:10:19,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-09-21 11:10:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:10:19,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:19,030 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] [2020-09-21 11:10:19,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:19,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:19,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1063304095, now seen corresponding path program 1 times [2020-09-21 11:10:19,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:19,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146865644] [2020-09-21 11:10:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,414 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:19,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:10:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-21 11:10:19,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:10:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 11:10:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,691 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,767 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:10:19,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:19,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:19,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,820 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,820 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,820 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,826 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,826 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:19,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:19,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:10:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,831 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,832 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,837 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,837 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,837 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,837 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:19,842 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:19,842 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:19,842 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:19,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:19,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146865644] [2020-09-21 11:10:19,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:19,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:19,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343725826] [2020-09-21 11:10:19,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:19,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:19,856 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 4 states. [2020-09-21 11:10:20,180 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:21,861 INFO L93 Difference]: Finished difference Result 357 states and 446 transitions. [2020-09-21 11:10:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:21,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-21 11:10:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:21,866 INFO L225 Difference]: With dead ends: 357 [2020-09-21 11:10:21,866 INFO L226 Difference]: Without dead ends: 259 [2020-09-21 11:10:21,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-21 11:10:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 214. [2020-09-21 11:10:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-21 11:10:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 259 transitions. [2020-09-21 11:10:21,932 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 259 transitions. Word has length 57 [2020-09-21 11:10:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:21,932 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 259 transitions. [2020-09-21 11:10:21,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 259 transitions. [2020-09-21 11:10:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 11:10:21,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:21,936 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] [2020-09-21 11:10:21,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:21,936 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:21,937 INFO L82 PathProgramCache]: Analyzing trace with hash 248297521, now seen corresponding path program 1 times [2020-09-21 11:10:21,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:21,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391923347] [2020-09-21 11:10:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,478 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,479 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:10:22,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-21 11:10:22,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:10:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,899 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,959 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,960 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:10:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,003 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:23,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:23,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:23,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,015 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,015 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,015 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,015 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:23,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:10:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,040 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,040 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,040 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:23,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:23,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:23,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:23,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,048 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,049 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:23,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 11:10:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:23,064 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:23,064 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:23,065 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:23,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391923347] [2020-09-21 11:10:23,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:23,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:23,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044871922] [2020-09-21 11:10:23,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:23,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:23,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:23,080 INFO L87 Difference]: Start difference. First operand 214 states and 259 transitions. Second operand 8 states. [2020-09-21 11:10:23,459 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:25,068 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:25,529 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:25,851 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:26,255 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:26,975 INFO L93 Difference]: Finished difference Result 662 states and 868 transitions. [2020-09-21 11:10:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:26,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-21 11:10:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:26,982 INFO L225 Difference]: With dead ends: 662 [2020-09-21 11:10:26,982 INFO L226 Difference]: Without dead ends: 472 [2020-09-21 11:10:26,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-09-21 11:10:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 407. [2020-09-21 11:10:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-09-21 11:10:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 505 transitions. [2020-09-21 11:10:27,083 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 505 transitions. Word has length 63 [2020-09-21 11:10:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:27,084 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 505 transitions. [2020-09-21 11:10:27,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 505 transitions. [2020-09-21 11:10:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:27,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:27,089 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] [2020-09-21 11:10:27,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:27,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:27,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1905140809, now seen corresponding path program 1 times [2020-09-21 11:10:27,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:27,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722037371] [2020-09-21 11:10:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,475 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,475 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 11:10:27,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-21 11:10:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:10:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 11:10:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,825 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,889 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,889 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,890 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,890 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:10:27,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,924 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,924 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,925 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,925 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:27,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:27,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,930 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,930 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,930 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,937 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,944 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,945 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,945 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,945 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:27,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,962 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,962 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,963 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,963 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:27,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:10:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,978 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,978 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,978 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,978 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:10:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,983 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,983 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,984 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,984 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:10:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,988 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 11:10:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,993 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,993 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:28,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722037371] [2020-09-21 11:10:28,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:28,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:10:28,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535555679] [2020-09-21 11:10:28,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:10:28,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:28,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:10:28,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:10:28,008 INFO L87 Difference]: Start difference. First operand 407 states and 505 transitions. Second operand 6 states. [2020-09-21 11:10:28,336 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:29,097 INFO L93 Difference]: Finished difference Result 653 states and 837 transitions. [2020-09-21 11:10:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:10:29,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-21 11:10:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:29,101 INFO L225 Difference]: With dead ends: 653 [2020-09-21 11:10:29,102 INFO L226 Difference]: Without dead ends: 270 [2020-09-21 11:10:29,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:10:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-09-21 11:10:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 253. [2020-09-21 11:10:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-21 11:10:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 286 transitions. [2020-09-21 11:10:29,162 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 286 transitions. Word has length 67 [2020-09-21 11:10:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:29,163 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 286 transitions. [2020-09-21 11:10:29,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:10:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 286 transitions. [2020-09-21 11:10:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:29,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:29,165 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] [2020-09-21 11:10:29,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:29,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1719041065, now seen corresponding path program 1 times [2020-09-21 11:10:29,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:29,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129852272] [2020-09-21 11:10:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:29,233 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:29,233 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:29,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:10:29,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:29 BoogieIcfgContainer [2020-09-21 11:10:29,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:29,270 INFO L168 Benchmark]: Toolchain (without parser) took 16792.32 ms. Allocated memory was 147.8 MB in the beginning and 505.4 MB in the end (delta: 357.6 MB). Free memory was 103.3 MB in the beginning and 114.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 346.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:29,271 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-21 11:10:29,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.71 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.5 MB in the beginning and 172.3 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:29,273 INFO L168 Benchmark]: Boogie Preprocessor took 128.07 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:29,274 INFO L168 Benchmark]: RCFGBuilder took 1260.15 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 168.4 MB in the beginning and 194.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:29,275 INFO L168 Benchmark]: TraceAbstraction took 14653.60 ms. Allocated memory was 235.4 MB in the beginning and 505.4 MB in the end (delta: 270.0 MB). Free memory was 194.0 MB in the beginning and 114.5 MB in the end (delta: 79.5 MB). Peak memory consumption was 349.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:29,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.71 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.5 MB in the beginning and 172.3 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.07 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1260.15 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 168.4 MB in the beginning and 194.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14653.60 ms. Allocated memory was 235.4 MB in the beginning and 505.4 MB in the end (delta: 270.0 MB). Free memory was 194.0 MB in the beginning and 114.5 MB in the end (delta: 79.5 MB). Peak memory consumption was 349.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L314] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int pumpRunning = 0; [L586] int systemActive = 1; [L868] int cleanupTimeShifts = 4; [L941] int retValue_acc ; [L942] int tmp ; [L946] FCALL select_helpers() [L947] FCALL select_features() [L948] CALL, EXPR valid_product() [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); [L948] RET, EXPR valid_product() [L948] tmp = valid_product() [L950] COND TRUE \read(tmp) [L952] FCALL setup() [L953] CALL runTest() [L935] CALL test() [L515] int splverifierCounter ; [L516] int tmp ; [L517] int tmp___0 ; [L518] int tmp___1 ; [L519] int tmp___2 ; [L522] splverifierCounter = 0 [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L558] tmp___1 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___1) [L562] CALL stopSystem() [L784] COND FALSE !(\read(pumpRunning)) [L791] systemActive = 0 [L562] RET stopSystem() [L569] CALL timeShift() [L593] COND FALSE !(\read(pumpRunning)) [L600] COND FALSE !(\read(systemActive)) [L608] CALL __utac_acc__Specification3_spec__1() [L797] int tmp ; [L798] int tmp___0 ; [L799] int tmp___1 ; [L803] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) [L809] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L809] RET, EXPR getWaterLevel() [L809] tmp___0 = getWaterLevel() [L811] COND TRUE tmp___0 == 2 [L813] CALL, EXPR isPumpRunning() [L717] int retValue_acc ; [L720] retValue_acc = pumpRunning [L721] return (retValue_acc); [L813] RET, EXPR isPumpRunning() [L813] tmp___1 = isPumpRunning() [L815] COND FALSE !(\read(tmp___1)) [L819] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 560 SDtfs, 948 SDslu, 273 SDs, 0 SdLazy, 1341 SolverSat, 614 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 188 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 81118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...