/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:46:49,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:46:49,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:46:49,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:46:49,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:46:49,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:46:49,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:46:49,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:46:49,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:46:49,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:46:49,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:46:49,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:46:49,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:46:49,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:46:49,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:46:49,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:46:49,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:46:49,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:46:49,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:46:49,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:46:49,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:46:49,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:46:49,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:46:49,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:46:49,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:46:49,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:46:49,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:46:49,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:46:49,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:46:49,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:46:49,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:46:49,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:46:49,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:46:49,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:46:49,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:46:49,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:46:49,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:46:49,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:46:49,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:46:49,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:46:49,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:46:49,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:46:49,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:46:49,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:46:49,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:46:49,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:46:49,793 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:46:49,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:46:49,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:46:49,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:46:49,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:46:49,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:46:49,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:46:49,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:46:49,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:46:49,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:46:49,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:46:49,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:46:49,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:46:49,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:46:49,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:46:49,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:46:49,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:46:49,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:46:49,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:46:49,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:46:49,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:46:49,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:46:49,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:46:49,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:46:49,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:46:49,800 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:46:50,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:46:50,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:46:50,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:46:50,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:46:50,290 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:46:50,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-24 15:46:50,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a2603ec/b8e6a170a5fd4b1b91363d3ec9e8c2c5/FLAGc7de74636 [2020-09-24 15:46:51,015 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:46:51,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-24 15:46:51,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a2603ec/b8e6a170a5fd4b1b91363d3ec9e8c2c5/FLAGc7de74636 [2020-09-24 15:46:51,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41a2603ec/b8e6a170a5fd4b1b91363d3ec9e8c2c5 [2020-09-24 15:46:51,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:46:51,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:46:51,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:46:51,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:46:51,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:46:51,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:51,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d265cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51, skipping insertion in model container [2020-09-24 15:46:51,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:51,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:46:51,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:46:51,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:46:51,798 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:46:51,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:46:51,938 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:46:51,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51 WrapperNode [2020-09-24 15:46:51,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:46:51,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:46:51,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:46:51,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:46:51,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:51,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:52,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:52,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:52,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:52,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:52,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... [2020-09-24 15:46:52,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:46:52,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:46:52,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:46:52,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:46:52,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:46:52,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:46:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:46:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:46:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:46:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:46:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:46:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:46:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:46:52,220 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 15:46:52,220 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:46:52,220 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:46:52,220 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:46:52,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:46:52,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:46:52,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:46:52,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 15:46:52,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:46:52,222 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:46:52,222 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:46:52,223 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:46:52,223 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:46:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:46:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:46:52,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 15:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:46:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:46:52,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:46:52,227 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:46:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:46:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:46:52,227 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:46:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:46:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:46:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:46:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:46:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:46:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:46:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:46:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:46:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:46:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:46:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:46:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:46:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:46:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:46:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:46:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:46:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:46:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:46:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:46:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:46:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 15:46:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 15:46:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:46:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:46:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:46:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:46:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:46:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:46:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:46:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:46:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:46:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:46:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:46:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:46:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:46:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:46:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:46:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:46:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:46:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:46:53,459 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:46:53,459 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:46:53,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:46:53 BoogieIcfgContainer [2020-09-24 15:46:53,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:46:53,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:46:53,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:46:53,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:46:53,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:46:51" (1/3) ... [2020-09-24 15:46:53,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6d78b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:46:53, skipping insertion in model container [2020-09-24 15:46:53,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:51" (2/3) ... [2020-09-24 15:46:53,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6d78b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:46:53, skipping insertion in model container [2020-09-24 15:46:53,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:46:53" (3/3) ... [2020-09-24 15:46:53,478 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-09-24 15:46:53,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:46:53,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:46:53,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:46:53,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:46:53,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:46:53,565 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:46:53,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:46:53,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:46:53,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:46:53,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:46:53,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:46:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-24 15:46:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:46:53,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:53,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:46:53,625 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1461403982, now seen corresponding path program 1 times [2020-09-24 15:46:53,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:53,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724564954] [2020-09-24 15:46:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,088 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,089 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,089 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:46:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:46:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:46:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:54,587 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:54,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,638 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,639 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,639 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:54,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,750 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,751 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:54,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,757 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,757 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,758 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:54,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:54,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,766 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,783 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,783 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:54,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:54,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:46:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,790 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,790 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:54,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:54,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:46:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,799 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:46:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:54,810 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:54,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:54,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:54,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:54,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:54,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724564954] [2020-09-24 15:46:54,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:54,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:46:54,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428185549] [2020-09-24 15:46:54,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:46:54,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:54,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:46:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:46:54,891 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-09-24 15:46:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:46:56,237 INFO L93 Difference]: Finished difference Result 477 states and 570 transitions. [2020-09-24 15:46:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:46:56,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:46:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:46:56,280 INFO L225 Difference]: With dead ends: 477 [2020-09-24 15:46:56,280 INFO L226 Difference]: Without dead ends: 296 [2020-09-24 15:46:56,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:46:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-24 15:46:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-09-24 15:46:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-24 15:46:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 278 transitions. [2020-09-24 15:46:56,408 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 278 transitions. Word has length 153 [2020-09-24 15:46:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:46:56,409 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 278 transitions. [2020-09-24 15:46:56,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:46:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 278 transitions. [2020-09-24 15:46:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:46:56,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:56,418 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] [2020-09-24 15:46:56,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:46:56,418 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:56,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:56,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1820086342, now seen corresponding path program 1 times [2020-09-24 15:46:56,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:56,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593165740] [2020-09-24 15:46:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:56,529 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:56,529 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:56,529 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:56,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:56,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:46:56,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:46:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:46:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:46:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:56,901 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:56,918 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:56,918 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:56,918 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:56,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,003 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:57,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,008 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,008 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,008 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:57,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,013 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,017 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,018 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,018 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,018 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:57,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:46:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,022 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,022 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:46:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:46:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:57,033 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:57,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:57,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:57,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:57,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:57,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:57,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:57,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:57,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593165740] [2020-09-24 15:46:57,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:57,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:46:57,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395054379] [2020-09-24 15:46:57,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:46:57,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:46:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:46:57,067 INFO L87 Difference]: Start difference. First operand 255 states and 278 transitions. Second operand 4 states. [2020-09-24 15:46:57,753 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:46:58,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:46:58,782 INFO L93 Difference]: Finished difference Result 394 states and 445 transitions. [2020-09-24 15:46:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:46:58,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:46:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:46:58,788 INFO L225 Difference]: With dead ends: 394 [2020-09-24 15:46:58,788 INFO L226 Difference]: Without dead ends: 279 [2020-09-24 15:46:58,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:46:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-24 15:46:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-09-24 15:46:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-24 15:46:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2020-09-24 15:46:58,839 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 154 [2020-09-24 15:46:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:46:58,840 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2020-09-24 15:46:58,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:46:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2020-09-24 15:46:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 15:46:58,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:58,843 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] [2020-09-24 15:46:58,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:46:58,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:58,844 INFO L82 PathProgramCache]: Analyzing trace with hash 874874567, now seen corresponding path program 1 times [2020-09-24 15:46:58,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:58,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555473310] [2020-09-24 15:46:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:58,921 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:46:58,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:58,922 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 15:46:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:46:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 15:46:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 15:46:58,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:59,285 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,331 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,332 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,332 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:59,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 15:46:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,388 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,389 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,389 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:59,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,395 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,395 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:59,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:59,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,401 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,402 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,402 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:46:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:59,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:46:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,414 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:59,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:46:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,420 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,420 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:59,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 15:46:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:59,426 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:59,426 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:59,426 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:59,426 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:59,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:59,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:59,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:59,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555473310] [2020-09-24 15:46:59,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:59,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:46:59,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084412565] [2020-09-24 15:46:59,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:46:59,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:59,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:46:59,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:46:59,476 INFO L87 Difference]: Start difference. First operand 245 states and 265 transitions. Second operand 4 states. [2020-09-24 15:47:00,175 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:01,001 INFO L93 Difference]: Finished difference Result 414 states and 470 transitions. [2020-09-24 15:47:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:01,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-24 15:47:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:01,006 INFO L225 Difference]: With dead ends: 414 [2020-09-24 15:47:01,006 INFO L226 Difference]: Without dead ends: 279 [2020-09-24 15:47:01,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-24 15:47:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-09-24 15:47:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-24 15:47:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2020-09-24 15:47:01,047 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 163 [2020-09-24 15:47:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:01,048 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2020-09-24 15:47:01,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2020-09-24 15:47:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 15:47:01,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:01,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:01,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:47:01,051 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:01,052 INFO L82 PathProgramCache]: Analyzing trace with hash 515182839, now seen corresponding path program 1 times [2020-09-24 15:47:01,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:01,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948679234] [2020-09-24 15:47:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,144 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 15:47:01,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 15:47:01,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:47:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 15:47:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 15:47:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,615 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,657 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,657 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,657 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,657 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:01,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 15:47:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,735 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,735 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,735 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,753 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,753 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,762 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,763 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,763 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,763 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 15:47:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:47:01,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:47:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:47:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,806 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,807 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,807 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,807 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 15:47:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:47:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,820 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,820 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,821 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:47:01,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 15:47:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,828 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,829 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,829 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,829 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:01,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 15:47:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,841 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,841 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,842 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,842 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:47:01,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:47:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 15:47:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,894 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,895 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,895 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:47:01,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948679234] [2020-09-24 15:47:01,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:01,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:47:01,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464431092] [2020-09-24 15:47:01,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:47:01,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:01,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:47:01,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:47:01,962 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 9 states. [2020-09-24 15:47:02,667 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:05,170 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:05,574 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:05,893 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:06,229 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:06,531 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:07,036 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:07,353 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:07,811 INFO L93 Difference]: Finished difference Result 592 states and 706 transitions. [2020-09-24 15:47:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:47:07,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-24 15:47:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:07,817 INFO L225 Difference]: With dead ends: 592 [2020-09-24 15:47:07,817 INFO L226 Difference]: Without dead ends: 457 [2020-09-24 15:47:07,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:47:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-24 15:47:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 377. [2020-09-24 15:47:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-09-24 15:47:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 420 transitions. [2020-09-24 15:47:07,888 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 420 transitions. Word has length 176 [2020-09-24 15:47:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:07,889 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 420 transitions. [2020-09-24 15:47:07,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:47:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 420 transitions. [2020-09-24 15:47:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 15:47:07,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:07,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:07,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:47:07,893 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash -342521873, now seen corresponding path program 1 times [2020-09-24 15:47:07,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:07,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55765349] [2020-09-24 15:47:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:47:07,993 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:47:07,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:47:07,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:47:08,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:47:08 BoogieIcfgContainer [2020-09-24 15:47:08,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:47:08,034 INFO L168 Benchmark]: Toolchain (without parser) took 16772.19 ms. Allocated memory was 140.0 MB in the beginning and 558.4 MB in the end (delta: 418.4 MB). Free memory was 102.9 MB in the beginning and 376.5 MB in the end (delta: -273.6 MB). Peak memory consumption was 144.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:08,035 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:47:08,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.58 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 173.5 MB in the end (delta: -71.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:08,037 INFO L168 Benchmark]: Boogie Preprocessor took 170.52 ms. Allocated memory is still 203.9 MB. Free memory was 173.5 MB in the beginning and 169.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:08,038 INFO L168 Benchmark]: RCFGBuilder took 1353.20 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 169.3 MB in the beginning and 177.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:08,039 INFO L168 Benchmark]: TraceAbstraction took 14562.30 ms. Allocated memory was 236.5 MB in the beginning and 558.4 MB in the end (delta: 321.9 MB). Free memory was 177.3 MB in the beginning and 376.5 MB in the end (delta: -199.2 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:08,043 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.58 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 173.5 MB in the end (delta: -71.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.52 ms. Allocated memory is still 203.9 MB. Free memory was 173.5 MB in the beginning and 169.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1353.20 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 169.3 MB in the beginning and 177.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14562.30 ms. Allocated memory was 236.5 MB in the beginning and 558.4 MB in the end (delta: 321.9 MB). Free memory was 177.3 MB in the beginning and 376.5 MB in the end (delta: -199.2 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 938 SDtfs, 1009 SDslu, 742 SDs, 0 SdLazy, 1892 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=377occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 189 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 827 NumberOfCodeBlocks, 827 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 255764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...