/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:05:54,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:05:54,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:05:54,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:05:54,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:05:54,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:05:54,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:05:54,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:05:54,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:05:54,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:05:54,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:05:54,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:05:54,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:05:54,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:05:54,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:05:54,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:05:54,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:05:54,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:05:54,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:05:54,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:05:54,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:05:54,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:05:54,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:05:54,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:05:54,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:05:54,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:05:54,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:05:54,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:05:54,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:05:54,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:05:54,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:05:54,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:05:54,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:05:54,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:05:54,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:05:54,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:05:54,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:05:54,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:05:54,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:05:54,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:05:54,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:05:54,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:05:54,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:05:54,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:05:54,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:05:54,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:05:54,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:05:54,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:05:54,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:05:54,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:05:54,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:05:54,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:05:54,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:05:54,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:05:54,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:05:54,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:05:54,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:05:54,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:05:54,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:05:54,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:05:54,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:05:54,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:05:54,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:05:54,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:05:54,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:05:54,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:05:54,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:05:54,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:05:54,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:05:54,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:05:54,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:05:54,595 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:05:55,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:05:55,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:05:55,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:05:55,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:05:55,087 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:05:55,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-09-25 13:05:55,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79972ffd2/eb082402bfd14e279cee13602ea2d957/FLAGb4b8bcb01 [2020-09-25 13:05:55,819 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:05:55,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-09-25 13:05:55,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79972ffd2/eb082402bfd14e279cee13602ea2d957/FLAGb4b8bcb01 [2020-09-25 13:05:56,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79972ffd2/eb082402bfd14e279cee13602ea2d957 [2020-09-25 13:05:56,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:05:56,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:05:56,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:05:56,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:05:56,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:05:56,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a612428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56, skipping insertion in model container [2020-09-25 13:05:56,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:05:56,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:05:56,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:05:56,635 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:05:56,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:05:56,755 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:05:56,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56 WrapperNode [2020-09-25 13:05:56,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:05:56,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:05:56,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:05:56,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:05:56,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... [2020-09-25 13:05:56,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:05:56,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:05:56,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:05:56,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:05:56,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:05:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:05:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:05:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 13:05:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 13:05:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 13:05:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 13:05:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 13:05:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 13:05:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 13:05:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 13:05:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 13:05:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 13:05:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 13:05:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 13:05:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 13:05:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 13:05:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 13:05:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 13:05:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 13:05:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 13:05:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 13:05:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 13:05:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 13:05:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-25 13:05:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 13:05:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 13:05:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 13:05:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 13:05:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:05:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 13:05:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 13:05:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 13:05:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 13:05:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 13:05:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 13:05:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 13:05:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 13:05:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 13:05:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 13:05:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:05:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:05:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 13:05:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 13:05:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 13:05:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 13:05:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 13:05:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 13:05:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 13:05:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 13:05:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:05:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 13:05:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 13:05:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 13:05:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 13:05:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 13:05:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 13:05:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-25 13:05:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 13:05:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 13:05:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 13:05:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 13:05:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 13:05:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 13:05:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 13:05:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 13:05:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 13:05:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 13:05:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 13:05:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 13:05:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 13:05:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 13:05:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:05:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 13:05:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:05:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 13:05:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:05:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 13:05:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 13:05:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:05:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 13:05:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 13:05:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 13:05:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 13:05:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:05:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 13:05:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:05:58,166 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:05:58,167 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 13:05:58,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:05:58 BoogieIcfgContainer [2020-09-25 13:05:58,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:05:58,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:05:58,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:05:58,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:05:58,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:05:56" (1/3) ... [2020-09-25 13:05:58,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247e46e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:05:58, skipping insertion in model container [2020-09-25 13:05:58,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:05:56" (2/3) ... [2020-09-25 13:05:58,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247e46e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:05:58, skipping insertion in model container [2020-09-25 13:05:58,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:05:58" (3/3) ... [2020-09-25 13:05:58,185 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-09-25 13:05:58,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:05:58,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:05:58,236 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:05:58,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:05:58,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:05:58,272 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:05:58,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:05:58,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:05:58,272 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:05:58,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:05:58,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:05:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-25 13:05:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 13:05:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:05:58,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:05:58,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:05:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:05:58,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1378033390, now seen corresponding path program 1 times [2020-09-25 13:05:58,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:05:58,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512408460] [2020-09-25 13:05:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:05:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:05:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:05:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:03,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:03,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:03,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 13:06:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:06:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:06:03,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:03,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:06:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 13:06:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:06:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:06:04,190 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 13:06:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:06:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:06:04,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-25 13:06:04,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:04,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:06:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:06:04,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:06:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:04,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:06:04,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-09-25 13:06:04,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:06:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:06:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 13:06:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:04,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:06:04,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:06:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:06:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:06:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 13:06:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:04,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:06:04,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:06:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:06:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:06:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 13:06:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:04,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:04,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:06:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:04,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:06:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:06:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:06:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:06:04,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512408460] [2020-09-25 13:06:04,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:06:04,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:06:04,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723369889] [2020-09-25 13:06:04,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:06:04,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:06:04,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:06:04,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:06:04,857 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-09-25 13:06:05,449 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 13:06:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:06:07,458 INFO L93 Difference]: Finished difference Result 650 states and 785 transitions. [2020-09-25 13:06:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:06:07,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 13:06:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:06:07,484 INFO L225 Difference]: With dead ends: 650 [2020-09-25 13:06:07,484 INFO L226 Difference]: Without dead ends: 457 [2020-09-25 13:06:07,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:06:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-25 13:06:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 384. [2020-09-25 13:06:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-09-25 13:06:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 425 transitions. [2020-09-25 13:06:07,664 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 425 transitions. Word has length 142 [2020-09-25 13:06:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:06:07,665 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 425 transitions. [2020-09-25 13:06:07,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:06:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 425 transitions. [2020-09-25 13:06:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 13:06:07,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:06:07,671 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] [2020-09-25 13:06:07,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:06:07,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:06:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:06:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1453924306, now seen corresponding path program 1 times [2020-09-25 13:06:07,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:06:07,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511717485] [2020-09-25 13:06:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:06:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:12,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:06:12,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:06:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:06:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:12,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:06:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 13:06:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:06:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,101 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 13:06:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:06:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:06:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 13:06:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:06:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:06:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:13,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:06:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:13,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:13,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 13:06:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:06:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:13,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:06:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:13,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:13,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 13:06:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:06:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:06:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:06:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:06:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:06:13,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:06:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:06:13,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 13:06:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:13,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:06:13,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:06:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 13:06:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:13,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:13,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:06:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:06:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:06:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:06:13,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511717485] [2020-09-25 13:06:13,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:06:13,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:06:13,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965966512] [2020-09-25 13:06:13,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:06:13,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:06:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:06:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:06:13,631 INFO L87 Difference]: Start difference. First operand 384 states and 425 transitions. Second operand 9 states. [2020-09-25 13:06:14,123 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 13:06:15,390 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:15,741 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 13:06:16,180 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:16,580 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 13:06:16,942 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 13:06:17,468 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 13:06:17,826 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:18,240 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:06:19,809 INFO L93 Difference]: Finished difference Result 1140 states and 1413 transitions. [2020-09-25 13:06:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:06:19,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-09-25 13:06:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:06:19,819 INFO L225 Difference]: With dead ends: 1140 [2020-09-25 13:06:19,820 INFO L226 Difference]: Without dead ends: 819 [2020-09-25 13:06:19,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:06:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-09-25 13:06:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 611. [2020-09-25 13:06:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-25 13:06:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 684 transitions. [2020-09-25 13:06:19,947 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 684 transitions. Word has length 151 [2020-09-25 13:06:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:06:19,947 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 684 transitions. [2020-09-25 13:06:19,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:06:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 684 transitions. [2020-09-25 13:06:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:06:19,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:06:19,953 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] [2020-09-25 13:06:19,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:06:19,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:06:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:06:19,954 INFO L82 PathProgramCache]: Analyzing trace with hash -966583248, now seen corresponding path program 1 times [2020-09-25 13:06:19,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:06:19,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243406000] [2020-09-25 13:06:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:06:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:20,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:06:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4781 [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:06:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:06:25,116 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 13:06:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:06:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:06:25,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 13:06:25,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:06:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:06:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:06:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:25,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:25,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:06:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:25,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:25,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 13:06:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:25,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:06:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:06:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:06:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 13:06:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:06:25,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:06:25,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:06:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 13:06:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:06:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:06:25,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:06:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:06:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:06:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:06:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:25,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:06:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 13:06:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:25,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:06:25,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:06:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:06:25,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:06:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 13:06:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:25,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:25,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:25,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:06:25,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:25,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:06:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:06:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:06:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:06:25,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243406000] [2020-09-25 13:06:25,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:06:25,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:06:25,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539081009] [2020-09-25 13:06:25,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:06:25,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:06:25,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:06:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:06:25,762 INFO L87 Difference]: Start difference. First operand 611 states and 684 transitions. Second operand 8 states. [2020-09-25 13:06:26,213 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 13:06:28,019 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 13:06:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:06:29,037 INFO L93 Difference]: Finished difference Result 1811 states and 2217 transitions. [2020-09-25 13:06:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:06:29,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 13:06:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:06:29,052 INFO L225 Difference]: With dead ends: 1811 [2020-09-25 13:06:29,052 INFO L226 Difference]: Without dead ends: 1310 [2020-09-25 13:06:29,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:06:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-25 13:06:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 999. [2020-09-25 13:06:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 13:06:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1128 transitions. [2020-09-25 13:06:29,224 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1128 transitions. Word has length 165 [2020-09-25 13:06:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:06:29,226 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1128 transitions. [2020-09-25 13:06:29,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:06:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1128 transitions. [2020-09-25 13:06:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:06:29,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:06:29,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:06:29,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:06:29,233 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:06:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:06:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash 122714309, now seen corresponding path program 1 times [2020-09-25 13:06:29,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:06:29,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955065399] [2020-09-25 13:06:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:06:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:32,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:32,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 13:06:32,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:06:32,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3060 [2020-09-25 13:06:32,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:32,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:06:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 13:06:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:06:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:32,745 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 13:06:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:06:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:06:33,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 13:06:33,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:06:33,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:06:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:33,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:06:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:33,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:33,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 13:06:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:33,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:06:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:06:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:06:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:06:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 13:06:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:06:33,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:06:33,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:06:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 13:06:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:06:33,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:06:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:06:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:06:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:06:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:06:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 13:06:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:06:33,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:06:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 13:06:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:06:33,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:06:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:06:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:06:33,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:06:33,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:06:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:06:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:06:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:06:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:06:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:06:33,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955065399] [2020-09-25 13:06:33,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:06:33,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:06:33,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348809702] [2020-09-25 13:06:33,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:06:33,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:06:33,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:06:33,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:06:33,366 INFO L87 Difference]: Start difference. First operand 999 states and 1128 transitions. Second operand 11 states. [2020-09-25 13:06:33,993 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 13:06:35,340 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:35,692 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 13:06:36,054 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:36,411 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 13:06:36,725 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 13:06:37,487 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 13:06:37,785 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:38,181 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 13:06:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:06:39,593 INFO L93 Difference]: Finished difference Result 1322 states and 1593 transitions. [2020-09-25 13:06:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 13:06:39,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-09-25 13:06:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:06:39,602 INFO L225 Difference]: With dead ends: 1322 [2020-09-25 13:06:39,603 INFO L226 Difference]: Without dead ends: 1319 [2020-09-25 13:06:39,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-09-25 13:06:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-09-25 13:06:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 999. [2020-09-25 13:06:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 13:06:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1126 transitions. [2020-09-25 13:06:39,732 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1126 transitions. Word has length 166 [2020-09-25 13:06:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:06:39,732 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1126 transitions. [2020-09-25 13:06:39,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:06:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1126 transitions. [2020-09-25 13:06:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 13:06:39,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:06:39,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:06:39,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:06:39,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:06:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:06:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash 17634563, now seen corresponding path program 1 times [2020-09-25 13:06:39,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:06:39,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261113380] [2020-09-25 13:06:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:06:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:06:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:06:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking...