/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:39:01,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:39:01,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:39:01,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:39:01,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:39:01,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:39:01,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:39:01,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:39:01,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:39:01,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:39:01,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:39:01,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:39:01,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:39:01,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:39:01,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:39:01,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:39:01,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:39:01,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:39:01,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:39:01,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:39:01,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:39:01,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:39:01,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:39:01,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:39:01,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:39:01,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:39:01,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:39:01,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:39:01,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:39:01,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:39:01,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:39:01,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:39:01,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:39:01,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:39:01,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:39:01,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:39:01,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:39:01,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:39:01,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:39:01,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:39:01,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:39:01,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:39:02,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:39:02,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:39:02,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:39:02,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:39:02,011 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:39:02,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:39:02,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:39:02,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:39:02,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:39:02,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:39:02,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:39:02,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:39:02,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:39:02,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:39:02,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:39:02,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:39:02,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:39:02,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:39:02,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:39:02,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:39:02,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:39:02,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:39:02,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:39:02,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:39:02,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:39:02,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:39:02,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:39:02,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:39:02,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:39:02,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:39:02,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:39:02,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:39:02,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:39:02,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:39:02,507 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:39:02,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-09-24 23:39:02,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdf758c92/8a26a1994a7e4afea91ad4392eb2b115/FLAGeaa32ba52 [2020-09-24 23:39:03,205 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:39:03,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-09-24 23:39:03,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdf758c92/8a26a1994a7e4afea91ad4392eb2b115/FLAGeaa32ba52 [2020-09-24 23:39:03,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdf758c92/8a26a1994a7e4afea91ad4392eb2b115 [2020-09-24 23:39:03,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:39:03,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:39:03,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:39:03,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:39:03,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:39:03,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:39:03" (1/1) ... [2020-09-24 23:39:03,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:03, skipping insertion in model container [2020-09-24 23:39:03,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:39:03" (1/1) ... [2020-09-24 23:39:03,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:39:03,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:39:03,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:39:04,014 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:39:04,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:39:04,269 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:39:04,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04 WrapperNode [2020-09-24 23:39:04,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:39:04,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:39:04,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:39:04,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:39:04,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... [2020-09-24 23:39:04,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:39:04,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:39:04,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:39:04,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:39:04,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:39:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:39:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:39:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:39:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:39:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:39:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:39:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:39:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 23:39:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:39:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:39:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:39:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:39:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:39:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 23:39:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 23:39:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:39:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:39:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:39:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:39:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:39:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:39:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:39:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:39:04,456 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:39:04,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:39:04,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:39:04,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:39:04,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 23:39:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:39:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:39:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:39:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:39:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:39:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:39:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:39:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:39:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:39:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:39:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 23:39:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:39:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:39:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:39:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:39:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:39:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 23:39:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 23:39:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:39:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:39:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:39:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:39:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 23:39:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:39:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:39:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 23:39:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 23:39:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:39:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:39:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:39:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:39:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:39:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:39:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:39:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:39:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:39:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:39:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:39:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:39:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:39:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:39:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:39:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:39:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:39:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:39:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:39:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:39:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:39:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:39:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:39:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:39:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:39:05,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:39:05,633 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:39:05,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:39:05 BoogieIcfgContainer [2020-09-24 23:39:05,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:39:05,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:39:05,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:39:05,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:39:05,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:39:03" (1/3) ... [2020-09-24 23:39:05,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f233d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:39:05, skipping insertion in model container [2020-09-24 23:39:05,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:39:04" (2/3) ... [2020-09-24 23:39:05,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f233d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:39:05, skipping insertion in model container [2020-09-24 23:39:05,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:39:05" (3/3) ... [2020-09-24 23:39:05,658 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-09-24 23:39:05,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:39:05,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:39:05,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:39:05,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:39:05,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:39:05,733 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:39:05,733 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:39:05,733 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:39:05,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:39:05,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:39:05,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:39:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states. [2020-09-24 23:39:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 23:39:05,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:05,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:05,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash 970389308, now seen corresponding path program 1 times [2020-09-24 23:39:05,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:05,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602223674] [2020-09-24 23:39:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:11,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 23:39:11,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:39:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:39:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:39:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 23:39:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 23:39:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:39:11,628 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 23:39:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:39:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:12,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:12,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:39:12,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 23:39:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:12,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:12,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:12,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 23:39:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:12,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:12,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:39:12,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602223674] [2020-09-24 23:39:12,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:12,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:39:12,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088986453] [2020-09-24 23:39:12,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:39:12,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:39:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:39:12,228 INFO L87 Difference]: Start difference. First operand 309 states. Second operand 4 states. [2020-09-24 23:39:12,790 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:39:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:15,000 INFO L93 Difference]: Finished difference Result 665 states and 797 transitions. [2020-09-24 23:39:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:39:15,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 23:39:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:15,031 INFO L225 Difference]: With dead ends: 665 [2020-09-24 23:39:15,031 INFO L226 Difference]: Without dead ends: 467 [2020-09-24 23:39:15,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:39:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-09-24 23:39:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 394. [2020-09-24 23:39:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-24 23:39:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 433 transitions. [2020-09-24 23:39:15,185 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 433 transitions. Word has length 142 [2020-09-24 23:39:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:15,186 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 433 transitions. [2020-09-24 23:39:15,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:39:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 433 transitions. [2020-09-24 23:39:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 23:39:15,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:15,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:15,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:39:15,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:15,194 INFO L82 PathProgramCache]: Analyzing trace with hash -825115648, now seen corresponding path program 1 times [2020-09-24 23:39:15,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:15,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864586148] [2020-09-24 23:39:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:20,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:20,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 23:39:20,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:39:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-24 23:39:20,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:20,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:39:20,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 23:39:20,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 23:39:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:20,664 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:20,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:20,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:20,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-24 23:39:20,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:39:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:20,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:20,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:21,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:21,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:39:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:21,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:21,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:21,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 23:39:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:39:21,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:39:21,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:39:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:39:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:39:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:39:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:21,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:21,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 23:39:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 23:39:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:21,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:21,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:21,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:21,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:39:21,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864586148] [2020-09-24 23:39:21,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:21,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:39:21,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555014187] [2020-09-24 23:39:21,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:39:21,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:21,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:39:21,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:39:21,124 INFO L87 Difference]: Start difference. First operand 394 states and 433 transitions. Second operand 6 states. [2020-09-24 23:39:21,707 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:39:23,526 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:39:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:24,614 INFO L93 Difference]: Finished difference Result 1029 states and 1237 transitions. [2020-09-24 23:39:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:39:24,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-24 23:39:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:24,623 INFO L225 Difference]: With dead ends: 1029 [2020-09-24 23:39:24,623 INFO L226 Difference]: Without dead ends: 745 [2020-09-24 23:39:24,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:39:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-09-24 23:39:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 627. [2020-09-24 23:39:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-09-24 23:39:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 708 transitions. [2020-09-24 23:39:24,737 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 708 transitions. Word has length 151 [2020-09-24 23:39:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:24,738 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 708 transitions. [2020-09-24 23:39:24,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:39:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 708 transitions. [2020-09-24 23:39:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 23:39:24,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:24,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:24,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:39:24,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1097300876, now seen corresponding path program 1 times [2020-09-24 23:39:24,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:24,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13711095] [2020-09-24 23:39:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 23:39:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:39:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 23:39:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:39:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 23:39:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 23:39:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,160 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 23:39:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:39:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:30,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:39:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:30,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:30,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:30,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 23:39:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:39:30,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:39:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:39:30,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:39:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:39:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:39:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:39:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 23:39:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:30,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:30,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 23:39:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:30,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:30,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:30,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:30,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:39:30,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:30,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:39:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:30,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:39:30,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13711095] [2020-09-24 23:39:30,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:30,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 23:39:30,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530212397] [2020-09-24 23:39:30,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:39:30,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:39:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:39:30,762 INFO L87 Difference]: Start difference. First operand 627 states and 708 transitions. Second operand 10 states. [2020-09-24 23:39:31,456 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:39:32,798 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:33,126 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:39:33,468 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:33,805 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:39:34,116 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:34,762 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:39:35,072 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:35,425 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:39:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:36,433 INFO L93 Difference]: Finished difference Result 755 states and 889 transitions. [2020-09-24 23:39:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:39:36,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-09-24 23:39:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:36,440 INFO L225 Difference]: With dead ends: 755 [2020-09-24 23:39:36,440 INFO L226 Difference]: Without dead ends: 752 [2020-09-24 23:39:36,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:39:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-09-24 23:39:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 627. [2020-09-24 23:39:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-09-24 23:39:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 706 transitions. [2020-09-24 23:39:36,537 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 706 transitions. Word has length 161 [2020-09-24 23:39:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:36,538 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 706 transitions. [2020-09-24 23:39:36,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:39:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 706 transitions. [2020-09-24 23:39:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 23:39:36,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:36,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:36,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:39:36,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash -631856202, now seen corresponding path program 1 times [2020-09-24 23:39:36,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:36,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934676220] [2020-09-24 23:39:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:41,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 23:39:41,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:39:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 23:39:41,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:39:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 23:39:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-24 23:39:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:42,000 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 23:39:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:42,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:42,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:39:42,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:42,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 23:39:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 23:39:42,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:39:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 23:39:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 23:39:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:39:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:39:42,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:39:42,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:39:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:39:42,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 23:39:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 23:39:42,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:39:42,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:39:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:39:42,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:42,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:39:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:42,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:42,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 23:39:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:39:42,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:42,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-09-24 23:39:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:42,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:39:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:39:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:42,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-24 23:39:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:42,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:42,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:39:42,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934676220] [2020-09-24 23:39:42,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:42,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:39:42,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82905267] [2020-09-24 23:39:42,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:39:42,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:42,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:39:42,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:39:42,733 INFO L87 Difference]: Start difference. First operand 627 states and 706 transitions. Second operand 9 states. [2020-09-24 23:39:43,194 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:39:44,382 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:44,989 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-24 23:39:45,364 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:45,667 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:39:45,968 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:39:46,290 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:39:46,579 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:48,452 INFO L93 Difference]: Finished difference Result 1683 states and 2054 transitions. [2020-09-24 23:39:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:39:48,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 207 [2020-09-24 23:39:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:48,461 INFO L225 Difference]: With dead ends: 1683 [2020-09-24 23:39:48,461 INFO L226 Difference]: Without dead ends: 1166 [2020-09-24 23:39:48,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:39:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-09-24 23:39:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1015. [2020-09-24 23:39:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-24 23:39:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1172 transitions. [2020-09-24 23:39:48,620 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1172 transitions. Word has length 207 [2020-09-24 23:39:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:48,622 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1172 transitions. [2020-09-24 23:39:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:39:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1172 transitions. [2020-09-24 23:39:48,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 23:39:48,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:48,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:48,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:39:48,630 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:48,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:48,631 INFO L82 PathProgramCache]: Analyzing trace with hash 65821415, now seen corresponding path program 1 times [2020-09-24 23:39:48,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:48,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395258072] [2020-09-24 23:39:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking...