/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:10:17,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:10:17,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:10:17,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:10:17,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:10:17,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:10:17,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:10:17,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:10:17,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:10:17,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:10:17,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:10:17,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:10:17,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:10:17,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:10:17,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:10:17,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:10:17,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:10:17,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:10:17,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:10:17,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:10:17,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:10:17,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:10:17,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:10:17,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:10:17,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:10:17,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:10:17,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:10:17,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:10:17,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:10:17,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:10:17,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:10:17,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:10:17,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:10:17,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:10:17,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:10:17,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:10:17,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:10:17,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:10:17,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:10:17,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:10:17,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:10:17,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:10:17,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:10:17,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:10:17,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:10:17,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:10:17,810 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:10:17,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:10:17,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:10:17,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:10:17,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:10:17,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:10:17,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:10:17,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:10:17,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:10:17,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:10:17,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:10:17,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:10:17,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:10:17,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:10:17,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:10:17,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:10:17,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:10:17,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:17,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:10:17,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:10:17,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:10:17,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:10:17,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:10:17,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:10:17,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:10:17,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:10:18,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:10:18,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:10:18,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:10:18,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:10:18,318 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:10:18,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-21 11:10:18,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fe9a18a/d51f0189e06f4dda93ee10ecbcd033d7/FLAG709286f98 [2020-09-21 11:10:19,014 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:10:19,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-21 11:10:19,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fe9a18a/d51f0189e06f4dda93ee10ecbcd033d7/FLAG709286f98 [2020-09-21 11:10:19,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fe9a18a/d51f0189e06f4dda93ee10ecbcd033d7 [2020-09-21 11:10:19,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:10:19,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:10:19,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:19,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:10:19,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:10:19,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:19" (1/1) ... [2020-09-21 11:10:19,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1592531a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:19, skipping insertion in model container [2020-09-21 11:10:19,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:10:19" (1/1) ... [2020-09-21 11:10:19,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:10:19,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:10:19,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:19,929 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:10:20,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:10:20,099 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:10:20,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20 WrapperNode [2020-09-21 11:10:20,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:10:20,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:10:20,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:10:20,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:10:20,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... [2020-09-21 11:10:20,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:10:20,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:10:20,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:10:20,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:10:20,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:10:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:10:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:10:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:10:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:10:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:10:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:10:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:10:20,301 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:10:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:10:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:10:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:10:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:10:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:10:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:10:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:10:20,305 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:10:20,305 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:10:20,305 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:10:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:10:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:10:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:10:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:10:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:10:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:10:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:10:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:10:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:10:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:10:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:10:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:10:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:10:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:10:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:10:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:10:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:10:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:10:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:10:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:10:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:10:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:10:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:10:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:10:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:10:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:10:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:10:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:10:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:10:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:10:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:10:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:10:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:10:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:10:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:10:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:10:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:10:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:10:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:10:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:10:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:10:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:10:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:10:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:10:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:10:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:10:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:10:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:10:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:10:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:10:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:10:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:10:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:10:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:10:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:10:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:10:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:21,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:21,444 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:21,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:21 BoogieIcfgContainer [2020-09-21 11:10:21,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:21,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:21,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:21,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:21,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:10:19" (1/3) ... [2020-09-21 11:10:21,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48000f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:21, skipping insertion in model container [2020-09-21 11:10:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:10:20" (2/3) ... [2020-09-21 11:10:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48000f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:21, skipping insertion in model container [2020-09-21 11:10:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:21" (3/3) ... [2020-09-21 11:10:21,461 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-09-21 11:10:21,473 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:21,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:21,507 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:21,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:21,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:21,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:21,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:21,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:21,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:21,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:21,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-09-21 11:10:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:21,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:21,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:21,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:21,591 INFO L82 PathProgramCache]: Analyzing trace with hash -899623382, now seen corresponding path program 1 times [2020-09-21 11:10:21,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:21,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431259150] [2020-09-21 11:10:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:21,941 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:21,941 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:21,942 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:21,946 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:21,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:21,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:10:21,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,458 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,473 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,473 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,473 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,474 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,530 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,530 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,530 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,537 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,537 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,537 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,544 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,545 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,545 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,553 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:22,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,561 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,570 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,570 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,571 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,571 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:22,578 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:22,578 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:22,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:22,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431259150] [2020-09-21 11:10:22,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:22,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:22,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821455106] [2020-09-21 11:10:22,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:22,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:22,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:22,632 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-09-21 11:10:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:23,874 INFO L93 Difference]: Finished difference Result 313 states and 411 transitions. [2020-09-21 11:10:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:23,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:23,895 INFO L225 Difference]: With dead ends: 313 [2020-09-21 11:10:23,896 INFO L226 Difference]: Without dead ends: 169 [2020-09-21 11:10:23,901 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 [2020-09-21 11:10:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-21 11:10:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-09-21 11:10:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-21 11:10:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-09-21 11:10:24,021 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-09-21 11:10:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:24,022 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-09-21 11:10:24,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-09-21 11:10:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:24,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:24,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:24,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:24,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:24,029 INFO L82 PathProgramCache]: Analyzing trace with hash 345033864, now seen corresponding path program 1 times [2020-09-21 11:10:24,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:24,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738566464] [2020-09-21 11:10:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,103 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,103 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:24,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:10:24,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:24,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:24,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,423 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,432 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,432 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,432 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,432 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,474 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,479 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,485 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,485 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,485 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,486 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:24,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,490 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,491 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,491 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,496 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,497 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,497 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,497 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:24,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:24,502 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:24,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:24,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:24,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:24,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:24,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:24,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738566464] [2020-09-21 11:10:24,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:24,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:24,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55235612] [2020-09-21 11:10:24,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:24,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:24,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:24,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:24,516 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-09-21 11:10:24,916 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:25,943 INFO L93 Difference]: Finished difference Result 240 states and 294 transitions. [2020-09-21 11:10:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:25,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:25,947 INFO L225 Difference]: With dead ends: 240 [2020-09-21 11:10:25,948 INFO L226 Difference]: Without dead ends: 153 [2020-09-21 11:10:25,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-21 11:10:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 126. [2020-09-21 11:10:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-21 11:10:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-09-21 11:10:25,991 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-09-21 11:10:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:25,991 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-09-21 11:10:25,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-09-21 11:10:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:10:25,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:25,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:25,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:25,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:25,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:25,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1653234581, now seen corresponding path program 1 times [2020-09-21 11:10:25,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:25,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095225594] [2020-09-21 11:10:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:26,588 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:26,588 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:26,588 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:26,589 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:26,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:10:26,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-21 11:10:26,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:10:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 11:10:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:26,932 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:26,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:10:27,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:27,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,050 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,050 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,050 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:27,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:27,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:27,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:10:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,080 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,080 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,080 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,085 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,085 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:27,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:27,089 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:27,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:27,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:27,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:27,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:27,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:10:27,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:27,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095225594] [2020-09-21 11:10:27,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:27,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:27,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180342686] [2020-09-21 11:10:27,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:27,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:27,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:27,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:27,105 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 4 states. [2020-09-21 11:10:27,445 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:29,207 INFO L93 Difference]: Finished difference Result 369 states and 458 transitions. [2020-09-21 11:10:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:29,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-21 11:10:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:29,213 INFO L225 Difference]: With dead ends: 369 [2020-09-21 11:10:29,213 INFO L226 Difference]: Without dead ends: 267 [2020-09-21 11:10:29,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-21 11:10:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 222. [2020-09-21 11:10:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-21 11:10:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 267 transitions. [2020-09-21 11:10:29,284 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 267 transitions. Word has length 57 [2020-09-21 11:10:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:29,285 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 267 transitions. [2020-09-21 11:10:29,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 267 transitions. [2020-09-21 11:10:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 11:10:29,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:29,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:29,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:29,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash -55334840, now seen corresponding path program 1 times [2020-09-21 11:10:29,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:29,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911668404] [2020-09-21 11:10:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:29,739 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:29,739 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:29,739 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:29,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:29,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:10:29,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-21 11:10:29,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:10:29,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:30,138 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,208 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,208 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,208 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:30,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 11:10:30,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:30,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,246 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:30,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,252 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,252 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,253 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,258 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,258 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,258 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:30,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,265 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:30,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:10:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:10:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,290 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,290 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,290 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:10:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,298 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,298 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:30,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:30,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:30,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:30,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 11:10:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:30,320 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:30,320 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:30,320 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:30,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:30,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:30,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911668404] [2020-09-21 11:10:30,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:30,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:30,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143165917] [2020-09-21 11:10:30,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:30,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:30,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:30,335 INFO L87 Difference]: Start difference. First operand 222 states and 267 transitions. Second operand 8 states. [2020-09-21 11:10:30,773 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:32,351 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:32,778 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:33,094 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:33,421 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:34,344 INFO L93 Difference]: Finished difference Result 686 states and 902 transitions. [2020-09-21 11:10:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:34,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-21 11:10:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:34,350 INFO L225 Difference]: With dead ends: 686 [2020-09-21 11:10:34,351 INFO L226 Difference]: Without dead ends: 488 [2020-09-21 11:10:34,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-09-21 11:10:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 423. [2020-09-21 11:10:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-09-21 11:10:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 519 transitions. [2020-09-21 11:10:34,448 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 519 transitions. Word has length 63 [2020-09-21 11:10:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:34,449 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 519 transitions. [2020-09-21 11:10:34,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 519 transitions. [2020-09-21 11:10:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:34,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:34,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:34,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:34,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1296263794, now seen corresponding path program 1 times [2020-09-21 11:10:34,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:34,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515544056] [2020-09-21 11:10:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:34,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:34,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:34,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:34,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 11:10:34,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-21 11:10:34,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:10:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 11:10:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,203 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,290 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,290 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,291 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,291 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 11:10:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,348 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,349 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:35,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:35,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,359 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,366 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,367 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,367 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:35,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,376 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,377 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,377 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,378 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:35,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:35,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,404 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,404 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,405 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:10:35,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:10:35,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:35,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:10:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,427 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:35,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:35,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:10:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,438 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,438 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,438 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:35,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:35,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:10:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,445 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,446 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,446 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,446 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 11:10:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:35,453 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:35,453 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:35,454 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:35,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:35,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515544056] [2020-09-21 11:10:35,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:35,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:10:35,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727641259] [2020-09-21 11:10:35,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:10:35,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:35,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:10:35,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:10:35,484 INFO L87 Difference]: Start difference. First operand 423 states and 519 transitions. Second operand 6 states. [2020-09-21 11:10:35,839 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:37,920 INFO L93 Difference]: Finished difference Result 1078 states and 1409 transitions. [2020-09-21 11:10:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:37,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-21 11:10:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:37,926 INFO L225 Difference]: With dead ends: 1078 [2020-09-21 11:10:37,926 INFO L226 Difference]: Without dead ends: 679 [2020-09-21 11:10:37,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:10:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2020-09-21 11:10:38,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 613. [2020-09-21 11:10:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-21 11:10:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 750 transitions. [2020-09-21 11:10:38,082 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 750 transitions. Word has length 67 [2020-09-21 11:10:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:38,083 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 750 transitions. [2020-09-21 11:10:38,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:10:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 750 transitions. [2020-09-21 11:10:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 11:10:38,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:38,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:10:38,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:38,086 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1597316302, now seen corresponding path program 1 times [2020-09-21 11:10:38,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:38,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631706408] [2020-09-21 11:10:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:38,148 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:38,148 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:38,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:10:38,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:38 BoogieIcfgContainer [2020-09-21 11:10:38,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:38,183 INFO L168 Benchmark]: Toolchain (without parser) took 18857.97 ms. Allocated memory was 138.9 MB in the beginning and 534.8 MB in the end (delta: 395.8 MB). Free memory was 100.7 MB in the beginning and 453.4 MB in the end (delta: -352.6 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:38,184 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:10:38,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.61 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 171.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:38,186 INFO L168 Benchmark]: Boogie Preprocessor took 104.31 ms. Allocated memory is still 202.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:38,187 INFO L168 Benchmark]: RCFGBuilder took 1245.27 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 167.2 MB in the beginning and 198.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:38,187 INFO L168 Benchmark]: TraceAbstraction took 16728.59 ms. Allocated memory was 233.8 MB in the beginning and 534.8 MB in the end (delta: 300.9 MB). Free memory was 197.3 MB in the beginning and 453.4 MB in the end (delta: -256.1 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:38,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.61 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 171.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.31 ms. Allocated memory is still 202.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.27 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 167.2 MB in the beginning and 198.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16728.59 ms. Allocated memory was 233.8 MB in the beginning and 534.8 MB in the end (delta: 300.9 MB). Free memory was 197.3 MB in the beginning and 453.4 MB in the end (delta: -256.1 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 622 SDtfs, 890 SDslu, 314 SDs, 0 SdLazy, 1678 SolverSat, 555 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 237 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 81118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...