/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:18:26,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:18:26,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:18:26,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:18:26,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:18:26,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:18:26,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:18:26,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:18:26,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:18:26,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:18:26,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:18:26,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:18:26,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:18:26,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:18:26,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:18:26,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:18:26,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:18:26,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:18:26,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:18:26,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:18:26,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:18:26,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:18:26,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:18:26,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:18:26,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:18:26,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:18:26,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:18:26,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:18:26,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:18:26,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:18:26,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:18:26,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:18:26,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:18:26,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:18:26,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:18:26,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:18:26,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:18:26,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:18:26,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:18:26,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:18:26,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:18:26,627 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 16:18:26,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:18:26,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:18:26,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:18:26,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:18:26,664 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:18:26,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:18:26,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:18:26,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:18:26,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:18:26,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:18:26,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:18:26,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:18:26,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:18:26,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:18:26,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:18:26,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:18:26,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:18:26,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:18:26,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:18:26,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:18:26,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:18:26,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:18:26,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:18:26,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:18:26,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:18:26,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:18:26,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:18:26,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:18:26,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:18:26,670 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:18:26,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:18:27,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:18:27,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:18:27,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:18:27,008 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:18:27,009 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-21 16:18:27,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26d54816/3ea15841c9724cd2bef21027d4eb75de/FLAG194b39e80 [2020-08-21 16:18:27,580 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:18:27,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-21 16:18:27,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26d54816/3ea15841c9724cd2bef21027d4eb75de/FLAG194b39e80 [2020-08-21 16:18:27,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26d54816/3ea15841c9724cd2bef21027d4eb75de [2020-08-21 16:18:27,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:18:27,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:18:27,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:18:27,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:18:27,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:18:27,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:18:27" (1/1) ... [2020-08-21 16:18:27,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694adced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:27, skipping insertion in model container [2020-08-21 16:18:27,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:18:27" (1/1) ... [2020-08-21 16:18:27,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:18:27,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:18:28,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:18:28,659 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:18:28,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:18:28,763 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:18:28,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28 WrapperNode [2020-08-21 16:18:28,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:18:28,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:18:28,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:18:28,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:18:28,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (1/1) ... [2020-08-21 16:18:28,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:18:28,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:18:28,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:18:28,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:18:28,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (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 16:18:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:18:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:18:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:18:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 16:18:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:18:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:18:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:18:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:18:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:18:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:18:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:18:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:18:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:18:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:18:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:18:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:18:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:18:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:18:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:18:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 16:18:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:18:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:18:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:18:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:18:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:18:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:18:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:18:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:18:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:18:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:18:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:18:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:18:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:18:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:18:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:18:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:18:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:18:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:18:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:18:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:18:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:18:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:18:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:18:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:18:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:18:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:18:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:18:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:18:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:18:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:18:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:18:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:18:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:18:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:18:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:18:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:18:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:18:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:18:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:18:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:18:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:18:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:18:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:18:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:18:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:18:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:18:30,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:18:30,038 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:18:30,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:18:30 BoogieIcfgContainer [2020-08-21 16:18:30,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:18:30,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:18:30,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:18:30,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:18:30,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:18:27" (1/3) ... [2020-08-21 16:18:30,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a57428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:18:30, skipping insertion in model container [2020-08-21 16:18:30,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:18:28" (2/3) ... [2020-08-21 16:18:30,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a57428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:18:30, skipping insertion in model container [2020-08-21 16:18:30,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:18:30" (3/3) ... [2020-08-21 16:18:30,053 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-08-21 16:18:30,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:18:30,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:18:30,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:18:30,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:18:30,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:18:30,116 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:18:30,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:18:30,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:18:30,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:18:30,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:18:30,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:18:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-21 16:18:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 16:18:30,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:30,152 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] [2020-08-21 16:18:30,153 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:30,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-08-21 16:18:30,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:30,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432998917] [2020-08-21 16:18:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,900 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:18:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:18:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:30,988 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 16:18:30,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432998917] [2020-08-21 16:18:30,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:30,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:18:30,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178033978] [2020-08-21 16:18:31,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:18:31,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:31,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:18:31,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:18:31,023 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-21 16:18:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:32,273 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-21 16:18:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:18:32,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 16:18:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:32,290 INFO L225 Difference]: With dead ends: 329 [2020-08-21 16:18:32,290 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 16:18:32,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:18:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 16:18:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-21 16:18:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 16:18:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-08-21 16:18:32,416 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-08-21 16:18:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:32,417 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-08-21 16:18:32,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:18:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-08-21 16:18:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 16:18:32,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:32,421 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] [2020-08-21 16:18:32,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:18:32,422 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-08-21 16:18:32,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:32,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007962039] [2020-08-21 16:18:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,715 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:32,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:18:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:32,758 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 16:18:32,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007962039] [2020-08-21 16:18:32,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:32,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:18:32,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445280254] [2020-08-21 16:18:32,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:18:32,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:32,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:18:32,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:18:32,762 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 4 states. [2020-08-21 16:18:33,224 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:34,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:34,172 INFO L93 Difference]: Finished difference Result 262 states and 322 transitions. [2020-08-21 16:18:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:18:34,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 16:18:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:34,176 INFO L225 Difference]: With dead ends: 262 [2020-08-21 16:18:34,177 INFO L226 Difference]: Without dead ends: 161 [2020-08-21 16:18:34,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:18:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-21 16:18:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-21 16:18:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 16:18:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-21 16:18:34,230 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-08-21 16:18:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:34,231 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-21 16:18:34,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:18:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-21 16:18:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:18:34,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:34,233 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 16:18:34,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:18:34,234 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-08-21 16:18:34,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:34,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015961983] [2020-08-21 16:18:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,513 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:18:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:18:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:34,615 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 16:18:34,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015961983] [2020-08-21 16:18:34,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:34,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:18:34,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886988455] [2020-08-21 16:18:34,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:18:34,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:34,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:18:34,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:18:34,622 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 8 states. [2020-08-21 16:18:34,985 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:35,292 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:35,535 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:35,776 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:37,119 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2020-08-21 16:18:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:18:37,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 16:18:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:37,124 INFO L225 Difference]: With dead ends: 271 [2020-08-21 16:18:37,124 INFO L226 Difference]: Without dead ends: 161 [2020-08-21 16:18:37,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:18:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-21 16:18:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-21 16:18:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 16:18:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-08-21 16:18:37,164 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-08-21 16:18:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:37,165 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-08-21 16:18:37,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:18:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-08-21 16:18:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 16:18:37,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:37,168 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] [2020-08-21 16:18:37,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:18:37,169 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-08-21 16:18:37,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:37,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765525293] [2020-08-21 16:18:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,422 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:18:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:18:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 16:18:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:37,533 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 16:18:37,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765525293] [2020-08-21 16:18:37,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:37,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:18:37,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792537992] [2020-08-21 16:18:37,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:18:37,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:37,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:18:37,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:18:37,536 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-08-21 16:18:37,823 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:38,935 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:39,666 INFO L93 Difference]: Finished difference Result 369 states and 459 transitions. [2020-08-21 16:18:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:18:39,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-21 16:18:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:39,680 INFO L225 Difference]: With dead ends: 369 [2020-08-21 16:18:39,681 INFO L226 Difference]: Without dead ends: 259 [2020-08-21 16:18:39,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:18:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-21 16:18:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2020-08-21 16:18:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 16:18:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2020-08-21 16:18:39,757 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 69 [2020-08-21 16:18:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:39,757 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2020-08-21 16:18:39,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:18:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2020-08-21 16:18:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 16:18:39,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:39,760 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 16:18:39,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:18:39,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-08-21 16:18:39,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:39,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003972818] [2020-08-21 16:18:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,072 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:18:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 16:18:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 16:18:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:40,181 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 16:18:40,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003972818] [2020-08-21 16:18:40,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:40,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:18:40,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170212045] [2020-08-21 16:18:40,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:18:40,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:18:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:18:40,184 INFO L87 Difference]: Start difference. First operand 218 states and 248 transitions. Second operand 8 states. [2020-08-21 16:18:40,526 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:41,680 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:41,933 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:42,165 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:42,391 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:42,706 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:43,860 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2020-08-21 16:18:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:18:43,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-21 16:18:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:43,866 INFO L225 Difference]: With dead ends: 649 [2020-08-21 16:18:43,866 INFO L226 Difference]: Without dead ends: 455 [2020-08-21 16:18:43,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:18:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-21 16:18:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 391. [2020-08-21 16:18:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-21 16:18:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 446 transitions. [2020-08-21 16:18:43,971 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 446 transitions. Word has length 83 [2020-08-21 16:18:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:43,972 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 446 transitions. [2020-08-21 16:18:43,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:18:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 446 transitions. [2020-08-21 16:18:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 16:18:43,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:43,974 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 16:18:43,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:18:43,974 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:43,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-08-21 16:18:43,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:43,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675629881] [2020-08-21 16:18:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,244 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:18:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 16:18:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:44,368 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 16:18:44,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675629881] [2020-08-21 16:18:44,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:44,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:18:44,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675980631] [2020-08-21 16:18:44,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:18:44,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:44,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:18:44,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:18:44,372 INFO L87 Difference]: Start difference. First operand 391 states and 446 transitions. Second operand 9 states. [2020-08-21 16:18:44,697 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:45,768 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:45,977 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:46,226 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:46,462 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:46,711 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:47,784 INFO L93 Difference]: Finished difference Result 494 states and 614 transitions. [2020-08-21 16:18:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:18:47,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-21 16:18:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:47,790 INFO L225 Difference]: With dead ends: 494 [2020-08-21 16:18:47,791 INFO L226 Difference]: Without dead ends: 491 [2020-08-21 16:18:47,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:18:47,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-21 16:18:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-21 16:18:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-21 16:18:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 445 transitions. [2020-08-21 16:18:47,870 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 445 transitions. Word has length 87 [2020-08-21 16:18:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:47,870 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 445 transitions. [2020-08-21 16:18:47,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:18:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 445 transitions. [2020-08-21 16:18:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:18:47,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:47,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:47,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:18:47,873 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:47,873 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-08-21 16:18:47,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:47,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100506226] [2020-08-21 16:18:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,132 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:48,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:18:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 16:18:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:48,257 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 16:18:48,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100506226] [2020-08-21 16:18:48,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:48,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:18:48,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932768653] [2020-08-21 16:18:48,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:18:48,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:48,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:18:48,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:18:48,260 INFO L87 Difference]: Start difference. First operand 391 states and 445 transitions. Second operand 9 states. [2020-08-21 16:18:49,025 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:18:49,255 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:18:49,489 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:49,724 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:50,856 INFO L93 Difference]: Finished difference Result 862 states and 1052 transitions. [2020-08-21 16:18:50,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:18:50,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 16:18:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:50,861 INFO L225 Difference]: With dead ends: 862 [2020-08-21 16:18:50,861 INFO L226 Difference]: Without dead ends: 495 [2020-08-21 16:18:50,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:18:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-21 16:18:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 401. [2020-08-21 16:18:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-21 16:18:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 455 transitions. [2020-08-21 16:18:50,968 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 455 transitions. Word has length 88 [2020-08-21 16:18:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:50,969 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 455 transitions. [2020-08-21 16:18:50,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:18:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 455 transitions. [2020-08-21 16:18:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:18:50,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:50,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:50,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:18:50,971 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-08-21 16:18:50,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:50,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012758153] [2020-08-21 16:18:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,294 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:18:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 16:18:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:51,495 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 16:18:51,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012758153] [2020-08-21 16:18:51,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:51,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:18:51,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754199283] [2020-08-21 16:18:51,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:18:51,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:18:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:18:51,503 INFO L87 Difference]: Start difference. First operand 401 states and 455 transitions. Second operand 11 states. [2020-08-21 16:18:52,165 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:52,374 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:52,591 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:53,168 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:53,401 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:53,638 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:18:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:54,872 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2020-08-21 16:18:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:18:54,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-21 16:18:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:54,879 INFO L225 Difference]: With dead ends: 886 [2020-08-21 16:18:54,880 INFO L226 Difference]: Without dead ends: 509 [2020-08-21 16:18:54,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:18:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-21 16:18:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 409. [2020-08-21 16:18:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-21 16:18:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2020-08-21 16:18:54,964 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 88 [2020-08-21 16:18:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:54,965 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2020-08-21 16:18:54,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:18:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2020-08-21 16:18:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:18:54,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:54,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:54,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:18:54,972 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:54,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-08-21 16:18:54,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:54,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087579435] [2020-08-21 16:18:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,237 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:18:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:18:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:18:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:18:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:18:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:18:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:18:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:18:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:18:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:18:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:18:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:18:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 16:18:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:18:55,399 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 16:18:55,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087579435] [2020-08-21 16:18:55,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:18:55,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:18:55,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626450829] [2020-08-21 16:18:55,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:18:55,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:18:55,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:18:55,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:18:55,403 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand 7 states. [2020-08-21 16:18:55,769 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:56,229 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:18:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:18:58,343 INFO L93 Difference]: Finished difference Result 1209 states and 1542 transitions. [2020-08-21 16:18:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:18:58,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-21 16:18:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:18:58,350 INFO L225 Difference]: With dead ends: 1209 [2020-08-21 16:18:58,351 INFO L226 Difference]: Without dead ends: 824 [2020-08-21 16:18:58,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:18:58,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-21 16:18:58,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 725. [2020-08-21 16:18:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-08-21 16:18:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 857 transitions. [2020-08-21 16:18:58,497 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 857 transitions. Word has length 88 [2020-08-21 16:18:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:18:58,498 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 857 transitions. [2020-08-21 16:18:58,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:18:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 857 transitions. [2020-08-21 16:18:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 16:18:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:18:58,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:18:58,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:18:58,501 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:18:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:18:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-08-21 16:18:58,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:18:58,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840100887] [2020-08-21 16:18:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:18:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:18:58,570 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:18:58,571 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:18:58,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:18:58,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:18:58 BoogieIcfgContainer [2020-08-21 16:18:58,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:18:58,617 INFO L168 Benchmark]: Toolchain (without parser) took 30702.12 ms. Allocated memory was 139.5 MB in the beginning and 550.5 MB in the end (delta: 411.0 MB). Free memory was 101.3 MB in the beginning and 396.6 MB in the end (delta: -295.2 MB). Peak memory consumption was 115.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:18:58,619 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:18:58,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 849.31 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 101.1 MB in the beginning and 171.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:18:58,625 INFO L168 Benchmark]: Boogie Preprocessor took 116.02 ms. Allocated memory is still 207.1 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:18:58,626 INFO L168 Benchmark]: RCFGBuilder took 1162.70 ms. Allocated memory was 207.1 MB in the beginning and 234.9 MB in the end (delta: 27.8 MB). Free memory was 167.6 MB in the beginning and 190.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:18:58,629 INFO L168 Benchmark]: TraceAbstraction took 28566.32 ms. Allocated memory was 234.9 MB in the beginning and 550.5 MB in the end (delta: 315.6 MB). Free memory was 190.5 MB in the beginning and 396.6 MB in the end (delta: -206.1 MB). Peak memory consumption was 109.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:18:58,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 849.31 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 101.1 MB in the beginning and 171.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.02 ms. Allocated memory is still 207.1 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1162.70 ms. Allocated memory was 207.1 MB in the beginning and 234.9 MB in the end (delta: 27.8 MB). Free memory was 167.6 MB in the beginning and 190.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28566.32 ms. Allocated memory was 234.9 MB in the beginning and 550.5 MB in the end (delta: 315.6 MB). Free memory was 190.5 MB in the beginning and 396.6 MB in the end (delta: -206.1 MB). Peak memory consumption was 109.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; [L530] FCALL select_helpers() [L531] FCALL select_features() [L532] CALL, EXPR valid_product() [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); [L532] RET, EXPR valid_product() [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) [L536] FCALL setup() [L537] CALL runTest() [L516] CALL test() [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 [L787] COND TRUE 1 [L789] COND TRUE splverifierCounter < 4 [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) [L799] CALL waterRise() [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 [L799] RET waterRise() [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) [L809] CALL changeMethaneLevel() [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 [L809] RET changeMethaneLevel() [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) [L830] CALL timeShift() [L561] COND FALSE !(\read(pumpRunning)) [L568] COND TRUE \read(systemActive) [L570] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__lowWaterSensor() [L616] int tmp ; [L619] COND FALSE !(\read(pumpRunning)) [L634] CALL processEnvironment__wrappee__highWaterSensor() [L590] int tmp ; [L593] COND TRUE ! pumpRunning [L595] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L958] int retValue_acc ; [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L595] RET, EXPR isHighWaterLevel() [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L599] CALL activatePump() [L670] pumpRunning = 1 [L599] RET activatePump() [L634] RET processEnvironment__wrappee__highWaterSensor() [L660] RET processEnvironment__wrappee__lowWaterSensor() [L570] RET processEnvironment() [L576] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 2093 SDslu, 1030 SDs, 0 SdLazy, 5363 SolverSat, 1311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred 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: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 200772 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...