/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:58:38,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:58:38,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:58:38,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:58:38,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:58:38,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:58:38,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:58:38,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:58:38,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:58:38,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:58:38,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:58:38,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:58:38,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:58:38,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:58:38,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:58:38,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:58:38,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:58:38,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:58:38,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:58:38,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:58:38,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:58:38,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:58:38,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:58:38,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:58:38,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:58:38,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:58:38,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:58:38,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:58:38,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:58:38,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:58:38,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:58:38,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:58:38,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:58:38,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:58:38,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:58:38,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:58:38,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:58:38,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:58:38,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:58:38,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:58:38,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:58:38,606 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 [2020-08-21 21:58:38,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:58:38,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:58:38,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:58:38,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:58:38,631 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:58:38,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:58:38,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:58:38,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:58:38,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:58:38,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:58:38,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:58:38,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:58:38,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:58:38,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:58:38,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:58:38,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:58:38,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:58:38,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:58:38,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:58:38,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:58:38,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:58:38,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:58:38,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:58:38,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:58:38,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:58:38,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:58:38,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:58:38,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:58:38,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:58:38,636 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:58:38,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:58:38,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:58:38,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:58:38,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:58:38,973 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:58:38,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-21 21:58:39,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74efc01ef/95eb274aa9dc43fd878f54d9a495218b/FLAG7dceacd05 [2020-08-21 21:58:39,588 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:58:39,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-21 21:58:39,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74efc01ef/95eb274aa9dc43fd878f54d9a495218b/FLAG7dceacd05 [2020-08-21 21:58:39,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74efc01ef/95eb274aa9dc43fd878f54d9a495218b [2020-08-21 21:58:39,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:58:39,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:58:39,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:58:39,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:58:39,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:58:39,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:58:39" (1/1) ... [2020-08-21 21:58:39,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:39, skipping insertion in model container [2020-08-21 21:58:39,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:58:39" (1/1) ... [2020-08-21 21:58:39,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:58:39,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:58:40,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:58:40,380 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:58:40,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:58:40,531 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:58:40,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40 WrapperNode [2020-08-21 21:58:40,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:58:40,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:58:40,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:58:40,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:58:40,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (1/1) ... [2020-08-21 21:58:40,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:58:40,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:58:40,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:58:40,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:58:40,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (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 [2020-08-21 21:58:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:58:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:58:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:58:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:58:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:58:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:58:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:58:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:58:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:58:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:58:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:58:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:58:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:58:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:58:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:58:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:58:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:58:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:58:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:58:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:58:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:58:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:58:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:58:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:58:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:58:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:58:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:58:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:58:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:58:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:58:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:58:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:58:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:58:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:58:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:58:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:58:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:58:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:58:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:58:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:58:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:58:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:58:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:58:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:58:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:58:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:58:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:58:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:58:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:58:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:58:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:58:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:58:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:58:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:58:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:58:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:58:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:58:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:58:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:58:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:58:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:58:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:58:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:58:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:58:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:58:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:58:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:58:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:58:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:58:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:58:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:58:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:58:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:58:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:58:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:58:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:58:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:58:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:58:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:58:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:58:41,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:58:41,727 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:58:41,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:58:41 BoogieIcfgContainer [2020-08-21 21:58:41,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:58:41,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:58:41,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:58:41,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:58:41,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:58:39" (1/3) ... [2020-08-21 21:58:41,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579770de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:58:41, skipping insertion in model container [2020-08-21 21:58:41,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:40" (2/3) ... [2020-08-21 21:58:41,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579770de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:58:41, skipping insertion in model container [2020-08-21 21:58:41,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:58:41" (3/3) ... [2020-08-21 21:58:41,742 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-08-21 21:58:41,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:58:41,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:58:41,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:58:41,803 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:58:41,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:58:41,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:58:41,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:58:41,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:58:41,804 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:58:41,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:58:41,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:58:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-21 21:58:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:58:41,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:41,839 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] [2020-08-21 21:58:41,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1759491915, now seen corresponding path program 1 times [2020-08-21 21:58:41,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:41,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745181706] [2020-08-21 21:58:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,563 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:58:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:58:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:42,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745181706] [2020-08-21 21:58:42,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:42,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:58:42,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75757185] [2020-08-21 21:58:42,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:58:42,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:42,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:58:42,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:58:42,759 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-21 21:58:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:43,669 INFO L93 Difference]: Finished difference Result 269 states and 353 transitions. [2020-08-21 21:58:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:58:43,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 21:58:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:43,686 INFO L225 Difference]: With dead ends: 269 [2020-08-21 21:58:43,686 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 21:58:43,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:58:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 21:58:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2020-08-21 21:58:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 21:58:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-21 21:58:43,777 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2020-08-21 21:58:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:43,777 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-21 21:58:43,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:58:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-21 21:58:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:58:43,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:43,781 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] [2020-08-21 21:58:43,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:58:43,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:43,782 INFO L82 PathProgramCache]: Analyzing trace with hash -273292015, now seen corresponding path program 1 times [2020-08-21 21:58:43,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:43,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342319537] [2020-08-21 21:58:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,081 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:58:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:58:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:44,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342319537] [2020-08-21 21:58:44,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:44,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:58:44,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514315657] [2020-08-21 21:58:44,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:58:44,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:44,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:58:44,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:58:44,137 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-08-21 21:58:44,579 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:58:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:45,328 INFO L93 Difference]: Finished difference Result 205 states and 254 transitions. [2020-08-21 21:58:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:58:45,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 21:58:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:45,334 INFO L225 Difference]: With dead ends: 205 [2020-08-21 21:58:45,334 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 21:58:45,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:58:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 21:58:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2020-08-21 21:58:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-21 21:58:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-08-21 21:58:45,373 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 52 [2020-08-21 21:58:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:45,373 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-08-21 21:58:45,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:58:45,374 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-08-21 21:58:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 21:58:45,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:45,376 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] [2020-08-21 21:58:45,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:58:45,376 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1232114680, now seen corresponding path program 1 times [2020-08-21 21:58:45,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:45,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084542447] [2020-08-21 21:58:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,724 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:58:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:58:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:45,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084542447] [2020-08-21 21:58:45,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:45,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:58:45,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767216250] [2020-08-21 21:58:45,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:58:45,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:58:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:58:45,848 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-08-21 21:58:46,205 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:46,518 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:46,759 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:47,028 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:47,774 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:58:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:49,073 INFO L93 Difference]: Finished difference Result 374 states and 471 transitions. [2020-08-21 21:58:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:58:49,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 21:58:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:49,085 INFO L225 Difference]: With dead ends: 374 [2020-08-21 21:58:49,085 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 21:58:49,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:58:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 21:58:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 223. [2020-08-21 21:58:49,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-21 21:58:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-08-21 21:58:49,166 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 56 [2020-08-21 21:58:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:49,167 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-08-21 21:58:49,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:58:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-08-21 21:58:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 21:58:49,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:49,171 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] [2020-08-21 21:58:49,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:58:49,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash 466387433, now seen corresponding path program 1 times [2020-08-21 21:58:49,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:49,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749318462] [2020-08-21 21:58:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,571 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:58:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:58:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:58:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:49,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749318462] [2020-08-21 21:58:49,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:49,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:58:49,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066493710] [2020-08-21 21:58:49,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:58:49,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:58:49,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:58:49,708 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 9 states. [2020-08-21 21:58:50,086 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:51,239 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:51,556 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:51,805 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:52,057 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:53,028 INFO L93 Difference]: Finished difference Result 711 states and 943 transitions. [2020-08-21 21:58:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:58:53,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 21:58:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:53,035 INFO L225 Difference]: With dead ends: 711 [2020-08-21 21:58:53,036 INFO L226 Difference]: Without dead ends: 516 [2020-08-21 21:58:53,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 21:58:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-08-21 21:58:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 394. [2020-08-21 21:58:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-08-21 21:58:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 476 transitions. [2020-08-21 21:58:53,137 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 476 transitions. Word has length 62 [2020-08-21 21:58:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:53,138 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 476 transitions. [2020-08-21 21:58:53,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:58:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 476 transitions. [2020-08-21 21:58:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 21:58:53,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:53,142 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] [2020-08-21 21:58:53,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:58:53,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash -995650491, now seen corresponding path program 1 times [2020-08-21 21:58:53,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:53,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385727337] [2020-08-21 21:58:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,471 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:53,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:58:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:58:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:58:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 21:58:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:53,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385727337] [2020-08-21 21:58:53,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:53,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:58:53,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440482522] [2020-08-21 21:58:53,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:58:53,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:58:53,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:58:53,573 INFO L87 Difference]: Start difference. First operand 394 states and 476 transitions. Second operand 10 states. [2020-08-21 21:58:54,005 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:55,052 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:55,382 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:55,620 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:56,119 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:57,126 INFO L93 Difference]: Finished difference Result 1128 states and 1528 transitions. [2020-08-21 21:58:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 21:58:57,127 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 21:58:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:57,135 INFO L225 Difference]: With dead ends: 1128 [2020-08-21 21:58:57,136 INFO L226 Difference]: Without dead ends: 762 [2020-08-21 21:58:57,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:58:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-08-21 21:58:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 577. [2020-08-21 21:58:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-08-21 21:58:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 699 transitions. [2020-08-21 21:58:57,273 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 699 transitions. Word has length 66 [2020-08-21 21:58:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:57,274 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 699 transitions. [2020-08-21 21:58:57,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:58:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 699 transitions. [2020-08-21 21:58:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:58:57,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:57,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:58:57,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:58:57,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:57,278 INFO L82 PathProgramCache]: Analyzing trace with hash 155563889, now seen corresponding path program 1 times [2020-08-21 21:58:57,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:57,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117768549] [2020-08-21 21:58:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,545 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:58:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:58:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:58:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:58:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:58:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 21:58:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:58:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:57,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117768549] [2020-08-21 21:58:57,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:57,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:58:57,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640992998] [2020-08-21 21:58:57,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:58:57,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:58:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:58:57,698 INFO L87 Difference]: Start difference. First operand 577 states and 699 transitions. Second operand 10 states. [2020-08-21 21:58:58,107 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:59,044 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:58:59,278 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:58:59,536 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:58:59,799 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:01,744 INFO L93 Difference]: Finished difference Result 2076 states and 2977 transitions. [2020-08-21 21:59:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 21:59:01,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-21 21:59:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:01,764 INFO L225 Difference]: With dead ends: 2076 [2020-08-21 21:59:01,765 INFO L226 Difference]: Without dead ends: 1527 [2020-08-21 21:59:01,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-21 21:59:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-08-21 21:59:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1103. [2020-08-21 21:59:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-21 21:59:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1340 transitions. [2020-08-21 21:59:02,073 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1340 transitions. Word has length 83 [2020-08-21 21:59:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:02,074 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1340 transitions. [2020-08-21 21:59:02,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1340 transitions. [2020-08-21 21:59:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:59:02,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:02,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:02,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:59:02,083 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:02,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1955726480, now seen corresponding path program 1 times [2020-08-21 21:59:02,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:02,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978553313] [2020-08-21 21:59:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,355 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:59:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 21:59:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:59:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:02,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978553313] [2020-08-21 21:59:02,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:02,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:02,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980746292] [2020-08-21 21:59:02,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:02,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:02,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:02,492 INFO L87 Difference]: Start difference. First operand 1103 states and 1340 transitions. Second operand 10 states. [2020-08-21 21:59:03,603 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:03,911 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:59:04,297 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:04,557 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:05,643 INFO L93 Difference]: Finished difference Result 2615 states and 3505 transitions. [2020-08-21 21:59:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:59:05,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-21 21:59:05,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:05,656 INFO L225 Difference]: With dead ends: 2615 [2020-08-21 21:59:05,657 INFO L226 Difference]: Without dead ends: 1540 [2020-08-21 21:59:05,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:59:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-08-21 21:59:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1143. [2020-08-21 21:59:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-08-21 21:59:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1380 transitions. [2020-08-21 21:59:05,899 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1380 transitions. Word has length 83 [2020-08-21 21:59:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:05,899 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1380 transitions. [2020-08-21 21:59:05,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1380 transitions. [2020-08-21 21:59:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:59:05,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:05,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:05,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:59:05,903 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:05,904 INFO L82 PathProgramCache]: Analyzing trace with hash -569523086, now seen corresponding path program 1 times [2020-08-21 21:59:05,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:05,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163251464] [2020-08-21 21:59:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,198 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:59:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 21:59:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:59:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:06,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163251464] [2020-08-21 21:59:06,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:06,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:59:06,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121123575] [2020-08-21 21:59:06,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:59:06,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:59:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:59:06,351 INFO L87 Difference]: Start difference. First operand 1143 states and 1380 transitions. Second operand 12 states. [2020-08-21 21:59:06,825 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:07,073 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:07,315 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:08,025 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:08,281 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:08,539 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:09,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:09,685 INFO L93 Difference]: Finished difference Result 2319 states and 3065 transitions. [2020-08-21 21:59:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:59:09,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-21 21:59:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:09,694 INFO L225 Difference]: With dead ends: 2319 [2020-08-21 21:59:09,694 INFO L226 Difference]: Without dead ends: 1204 [2020-08-21 21:59:09,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:59:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-08-21 21:59:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 927. [2020-08-21 21:59:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-21 21:59:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1088 transitions. [2020-08-21 21:59:09,878 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1088 transitions. Word has length 83 [2020-08-21 21:59:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:09,879 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1088 transitions. [2020-08-21 21:59:09,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:59:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1088 transitions. [2020-08-21 21:59:09,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 21:59:09,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:09,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:09,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:59:09,882 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:09,883 INFO L82 PathProgramCache]: Analyzing trace with hash 855595353, now seen corresponding path program 1 times [2020-08-21 21:59:09,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:09,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471148760] [2020-08-21 21:59:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,156 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:59:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 21:59:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 21:59:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:10,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471148760] [2020-08-21 21:59:10,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:10,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:59:10,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464499195] [2020-08-21 21:59:10,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:59:10,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:10,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:59:10,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:59:10,282 INFO L87 Difference]: Start difference. First operand 927 states and 1088 transitions. Second operand 8 states. [2020-08-21 21:59:10,661 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:12,955 INFO L93 Difference]: Finished difference Result 1851 states and 2454 transitions. [2020-08-21 21:59:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 21:59:12,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-21 21:59:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:12,968 INFO L225 Difference]: With dead ends: 1851 [2020-08-21 21:59:12,969 INFO L226 Difference]: Without dead ends: 1848 [2020-08-21 21:59:12,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:59:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-08-21 21:59:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1424. [2020-08-21 21:59:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-08-21 21:59:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2020-08-21 21:59:13,272 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 87 [2020-08-21 21:59:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:13,274 INFO L479 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2020-08-21 21:59:13,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:59:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2020-08-21 21:59:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-21 21:59:13,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:13,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:13,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:59:13,284 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1738865668, now seen corresponding path program 1 times [2020-08-21 21:59:13,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:13,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318579330] [2020-08-21 21:59:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:59:13,357 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:59:13,357 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:59:13,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:59:13,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:59:13 BoogieIcfgContainer [2020-08-21 21:59:13,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:59:13,409 INFO L168 Benchmark]: Toolchain (without parser) took 33528.72 ms. Allocated memory was 138.4 MB in the beginning and 716.7 MB in the end (delta: 578.3 MB). Free memory was 100.5 MB in the beginning and 343.0 MB in the end (delta: -242.5 MB). Peak memory consumption was 335.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:13,414 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 21:59:13,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.62 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 167.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:13,420 INFO L168 Benchmark]: Boogie Preprocessor took 111.17 ms. Allocated memory is still 200.8 MB. Free memory was 167.8 MB in the beginning and 163.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:13,421 INFO L168 Benchmark]: RCFGBuilder took 1088.68 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 162.9 MB in the beginning and 192.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:13,423 INFO L168 Benchmark]: TraceAbstraction took 31673.41 ms. Allocated memory was 232.3 MB in the beginning and 716.7 MB in the end (delta: 484.4 MB). Free memory was 192.7 MB in the beginning and 343.0 MB in the end (delta: -150.2 MB). Peak memory consumption was 334.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:13,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.62 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 167.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.17 ms. Allocated memory is still 200.8 MB. Free memory was 167.8 MB in the beginning and 163.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1088.68 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 162.9 MB in the beginning and 192.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31673.41 ms. Allocated memory was 232.3 MB in the beginning and 716.7 MB in the end (delta: 484.4 MB). Free memory was 192.7 MB in the beginning and 343.0 MB in the end (delta: -150.2 MB). Peak memory consumption was 334.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 736]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int pumpRunning = 0; [L417] int systemActive = 1; [L655] int methAndRunningLastTime ; [L741] int cleanupTimeShifts = 4; [L839] int waterLevel = 1; [L840] int methaneLevelCritical = 0; [L815] int retValue_acc ; [L816] int tmp ; [L820] FCALL select_helpers() [L821] FCALL select_features() [L822] CALL, EXPR valid_product() [L723] int retValue_acc ; [L726] retValue_acc = 1 [L727] return (retValue_acc); [L822] RET, EXPR valid_product() [L822] tmp = valid_product() [L824] COND TRUE \read(tmp) [L826] FCALL setup() [L827] CALL runTest() [L808] CALL __utac_acc__Specification2_spec__1() [L660] methAndRunningLastTime = 0 [L808] RET __utac_acc__Specification2_spec__1() [L809] CALL test() [L588] int splverifierCounter ; [L589] int tmp ; [L590] int tmp___0 ; [L591] int tmp___1 ; [L592] int tmp___2 ; [L595] splverifierCounter = 0 [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp) [L609] CALL waterRise() [L857] COND TRUE waterLevel < 2 [L858] waterLevel = waterLevel + 1 [L609] RET waterRise() [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp___0) [L619] CALL changeMethaneLevel() [L869] COND FALSE !(\read(methaneLevelCritical)) [L872] methaneLevelCritical = 1 [L619] RET changeMethaneLevel() [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND FALSE !(\read(pumpRunning)) [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND TRUE ! pumpRunning [L458] CALL, EXPR isHighWaterLevel() [L550] int retValue_acc ; [L551] int tmp ; [L552] int tmp___0 ; [L556] CALL, EXPR isHighWaterSensorDry() [L919] int retValue_acc ; [L922] COND FALSE !(waterLevel < 2) [L926] retValue_acc = 0 [L927] return (retValue_acc); [L556] RET, EXPR isHighWaterSensorDry() [L556] tmp = isHighWaterSensorDry() [L558] COND FALSE !(\read(tmp)) [L561] tmp___0 = 1 [L563] retValue_acc = tmp___0 [L564] return (retValue_acc); [L458] RET, EXPR isHighWaterLevel() [L458] tmp = isHighWaterLevel() [L460] COND TRUE \read(tmp) [L462] CALL activatePump() [L481] pumpRunning = 1 [L462] RET activatePump() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND FALSE !(\read(methAndRunningLastTime)) [L682] methAndRunningLastTime = 1 [L439] RET __utac_acc__Specification2_spec__2() [L642] RET timeShift() [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND FALSE !(\read(tmp)) [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp___0)) [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND TRUE \read(pumpRunning) [L426] CALL lowerWaterLevel() [L845] COND TRUE waterLevel > 0 [L846] waterLevel = waterLevel - 1 [L426] RET lowerWaterLevel() [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND FALSE !(! pumpRunning) [L471] FCALL processEnvironment__wrappee__base() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND TRUE \read(methAndRunningLastTime) [L679] CALL __automaton_fail() [L736] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 918 SDtfs, 2503 SDslu, 1346 SDs, 0 SdLazy, 5865 SolverSat, 1719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1424occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1961 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 188498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...