/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:53:00,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:53:00,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:53:00,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:53:00,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:53:00,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:53:00,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:53:00,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:53:00,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:53:00,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:53:00,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:53:00,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:53:00,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:53:00,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:53:00,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:53:00,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:53:00,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:53:00,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:53:00,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:53:00,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:53:00,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:53:00,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:53:00,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:53:00,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:53:00,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:53:00,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:53:00,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:53:00,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:53:00,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:53:00,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:53:00,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:53:00,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:53:00,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:53:00,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:53:00,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:53:00,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:53:00,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:53:00,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:53:00,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:53:00,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:53:00,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:53:00,698 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 13:53:00,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:53:00,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:53:00,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:53:00,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:53:00,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:53:00,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:53:00,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:53:00,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:53:00,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:53:00,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:53:00,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:53:00,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:53:00,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:53:00,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:53:00,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:53:00,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:53:00,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:53:00,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:53:00,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:53:00,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:53:00,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:53:00,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:53:00,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:53:00,732 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 -> log-additional-information=true; [2020-08-21 13:53:01,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:53:01,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:53:01,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:53:01,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:53:01,053 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:53:01,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-21 13:53:01,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698b307bb/a158488058174da9ba56ca14372cfa84/FLAG634e2cbc1 [2020-08-21 13:53:01,704 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:53:01,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-21 13:53:01,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698b307bb/a158488058174da9ba56ca14372cfa84/FLAG634e2cbc1 [2020-08-21 13:53:01,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698b307bb/a158488058174da9ba56ca14372cfa84 [2020-08-21 13:53:01,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:53:01,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:53:01,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:53:01,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:53:01,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:53:01,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:53:01" (1/1) ... [2020-08-21 13:53:01,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d644d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:01, skipping insertion in model container [2020-08-21 13:53:01,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:53:01" (1/1) ... [2020-08-21 13:53:02,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:53:02,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:53:02,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:53:02,363 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:53:02,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:53:02,629 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:53:02,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02 WrapperNode [2020-08-21 13:53:02,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:53:02,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:53:02,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:53:02,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:53:02,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (1/1) ... [2020-08-21 13:53:02,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:53:02,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:53:02,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:53:02,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:53:02,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (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 13:53:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:53:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:53:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:53:02,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:53:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:53:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:53:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:53:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:53:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:53:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:53:02,814 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:53:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:53:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:53:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:53:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:53:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:53:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:53:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:53:02,817 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:53:02,817 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:53:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:53:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:53:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:53:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:53:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:53:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:53:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:53:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:53:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:53:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:53:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:53:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:53:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:53:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:53:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:53:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:53:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:53:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:53:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:53:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:53:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:53:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:53:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:53:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:53:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:53:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:53:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:53:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:53:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:53:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:53:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:53:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:53:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:53:03,883 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:53:03,884 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:53:03,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:53:03 BoogieIcfgContainer [2020-08-21 13:53:03,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:53:03,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:53:03,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:53:03,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:53:03,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:53:01" (1/3) ... [2020-08-21 13:53:03,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33612a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:53:03, skipping insertion in model container [2020-08-21 13:53:03,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:02" (2/3) ... [2020-08-21 13:53:03,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33612a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:53:03, skipping insertion in model container [2020-08-21 13:53:03,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:53:03" (3/3) ... [2020-08-21 13:53:03,902 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-21 13:53:03,912 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:53:03,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:53:03,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:53:03,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:53:03,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:53:03,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:53:03,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:53:03,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:53:03,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:53:03,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:53:03,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:53:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-21 13:53:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:53:03,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:03,984 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 13:53:03,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-21 13:53:03,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:03,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145078564] [2020-08-21 13:53:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,690 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:53:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:53:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:04,816 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 13:53:04,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145078564] [2020-08-21 13:53:04,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:04,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:53:04,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110240147] [2020-08-21 13:53:04,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:53:04,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:53:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:53:04,852 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-21 13:53:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:05,936 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-21 13:53:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:53:05,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:53:05,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:05,953 INFO L225 Difference]: With dead ends: 258 [2020-08-21 13:53:05,953 INFO L226 Difference]: Without dead ends: 140 [2020-08-21 13:53:05,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:53:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-21 13:53:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-21 13:53:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 13:53:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-21 13:53:06,074 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-21 13:53:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:06,075 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-21 13:53:06,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:53:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-21 13:53:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:53:06,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:06,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:53:06,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:53:06,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-21 13:53:06,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:06,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140730427] [2020-08-21 13:53:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,452 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:53:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:53:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:06,521 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 13:53:06,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140730427] [2020-08-21 13:53:06,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:06,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:53:06,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672879815] [2020-08-21 13:53:06,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:53:06,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:06,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:53:06,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:53:06,526 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-21 13:53:06,959 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:07,588 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-21 13:53:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:53:07,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:53:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:07,591 INFO L225 Difference]: With dead ends: 187 [2020-08-21 13:53:07,591 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 13:53:07,593 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 13:53:07,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 13:53:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 13:53:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 13:53:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-21 13:53:07,625 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-21 13:53:07,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:07,625 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-21 13:53:07,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:53:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-21 13:53:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:53:07,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:07,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:53:07,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:53:07,628 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-21 13:53:07,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:07,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172817469] [2020-08-21 13:53:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:07,945 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:07,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:53:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:53:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:08,019 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 13:53:08,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172817469] [2020-08-21 13:53:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:08,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:53:08,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139459420] [2020-08-21 13:53:08,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:53:08,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:08,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:53:08,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:53:08,023 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-21 13:53:08,399 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:08,703 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:08,941 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:09,165 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:10,125 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-21 13:53:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:53:10,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:53:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:10,129 INFO L225 Difference]: With dead ends: 200 [2020-08-21 13:53:10,129 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 13:53:10,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 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 13:53:10,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 13:53:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 13:53:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 13:53:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-21 13:53:10,174 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-21 13:53:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:10,175 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-21 13:53:10,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:53:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-21 13:53:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 13:53:10,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:10,177 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] [2020-08-21 13:53:10,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:53:10,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:10,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-21 13:53:10,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:10,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626044098] [2020-08-21 13:53:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,438 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:10,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:53:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 13:53:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 13:53:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:10,538 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 13:53:10,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626044098] [2020-08-21 13:53:10,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:10,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:53:10,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688939419] [2020-08-21 13:53:10,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:53:10,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:10,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:53:10,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:53:10,542 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-21 13:53:10,863 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:11,942 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:12,370 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-21 13:53:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:53:12,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 13:53:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:12,376 INFO L225 Difference]: With dead ends: 288 [2020-08-21 13:53:12,376 INFO L226 Difference]: Without dead ends: 212 [2020-08-21 13:53:12,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:53:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-21 13:53:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-21 13:53:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-21 13:53:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-21 13:53:12,419 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-21 13:53:12,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:12,419 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-21 13:53:12,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:53:12,420 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-21 13:53:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 13:53:12,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:12,421 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, 1, 1, 1, 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 13:53:12,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:53:12,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:12,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-21 13:53:12,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:12,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837622662] [2020-08-21 13:53:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,715 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:53:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:53:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:53:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 13:53:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:53:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:12,795 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 13:53:12,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837622662] [2020-08-21 13:53:12,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:12,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:53:12,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788570858] [2020-08-21 13:53:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:53:12,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:12,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:53:12,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:53:12,798 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-21 13:53:13,205 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:14,224 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:14,522 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:14,792 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:15,018 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:15,309 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:15,970 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-21 13:53:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:53:15,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-21 13:53:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:15,978 INFO L225 Difference]: With dead ends: 505 [2020-08-21 13:53:15,978 INFO L226 Difference]: Without dead ends: 360 [2020-08-21 13:53:15,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 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 13:53:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-21 13:53:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-21 13:53:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-21 13:53:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-21 13:53:16,062 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-21 13:53:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:16,063 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-21 13:53:16,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:53:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-21 13:53:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 13:53:16,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:16,065 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] [2020-08-21 13:53:16,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:53:16,065 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:16,066 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-21 13:53:16,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:16,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111134257] [2020-08-21 13:53:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,366 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:53:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:53:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:53:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:53:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 13:53:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:53:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:16,516 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 13:53:16,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111134257] [2020-08-21 13:53:16,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:16,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:53:16,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150438420] [2020-08-21 13:53:16,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:53:16,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:16,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:53:16,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:53:16,519 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-21 13:53:16,948 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:18,006 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:18,231 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:18,508 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:18,767 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:19,014 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:19,660 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-21 13:53:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:53:19,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 13:53:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:19,666 INFO L225 Difference]: With dead ends: 402 [2020-08-21 13:53:19,667 INFO L226 Difference]: Without dead ends: 399 [2020-08-21 13:53:19,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:53:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-21 13:53:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-21 13:53:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-21 13:53:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-21 13:53:19,730 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-21 13:53:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:19,731 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-21 13:53:19,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:53:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-21 13:53:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:53:19,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:19,732 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] [2020-08-21 13:53:19,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:53:19,733 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-21 13:53:19,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:19,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927571893] [2020-08-21 13:53:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:19,988 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:53:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:53:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:53:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:53:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:53:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:53:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:20,130 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 13:53:20,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927571893] [2020-08-21 13:53:20,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:20,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:53:20,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37820194] [2020-08-21 13:53:20,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:53:20,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:20,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:53:20,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:53:20,140 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-21 13:53:21,064 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:21,316 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:53:21,563 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:21,829 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:22,669 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-21 13:53:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:53:22,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 13:53:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:22,674 INFO L225 Difference]: With dead ends: 672 [2020-08-21 13:53:22,674 INFO L226 Difference]: Without dead ends: 403 [2020-08-21 13:53:22,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:53:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-21 13:53:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-21 13:53:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-21 13:53:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-21 13:53:22,738 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-21 13:53:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:22,739 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-21 13:53:22,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:53:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-21 13:53:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:53:22,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:22,741 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] [2020-08-21 13:53:22,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:53:22,741 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-21 13:53:22,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:22,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692897910] [2020-08-21 13:53:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:22,984 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:53:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:53:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:53:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:53:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:53:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:53:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:53:23,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692897910] [2020-08-21 13:53:23,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:23,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:53:23,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166392496] [2020-08-21 13:53:23,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:53:23,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:23,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:53:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:53:23,104 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-21 13:53:23,635 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:23,866 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:24,083 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:24,680 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:24,915 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:25,140 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:26,062 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-21 13:53:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:53:26,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-21 13:53:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:26,066 INFO L225 Difference]: With dead ends: 696 [2020-08-21 13:53:26,067 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 13:53:26,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:53:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 13:53:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-21 13:53:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-21 13:53:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-21 13:53:26,124 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-21 13:53:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:26,124 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-21 13:53:26,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:53:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-21 13:53:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:53:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:26,126 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] [2020-08-21 13:53:26,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:53:26,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-21 13:53:26,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:26,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766127713] [2020-08-21 13:53:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,398 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:53:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:53:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:53:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:53:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:53:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:53:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:26,545 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 13:53:26,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766127713] [2020-08-21 13:53:26,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:26,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:53:26,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663309025] [2020-08-21 13:53:26,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:53:26,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:53:26,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:53:26,548 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-21 13:53:26,943 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:27,441 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:29,201 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-21 13:53:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:53:29,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-21 13:53:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:29,207 INFO L225 Difference]: With dead ends: 1018 [2020-08-21 13:53:29,208 INFO L226 Difference]: Without dead ends: 731 [2020-08-21 13:53:29,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:53:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-21 13:53:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-21 13:53:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-21 13:53:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-21 13:53:29,336 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-21 13:53:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:29,337 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-21 13:53:29,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:53:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-21 13:53:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 13:53:29,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:29,339 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 13:53:29,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:53:29,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:29,340 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-21 13:53:29,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:29,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366732619] [2020-08-21 13:53:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:53:29,391 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:53:29,391 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:53:29,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:53:29,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:53:29 BoogieIcfgContainer [2020-08-21 13:53:29,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:53:29,420 INFO L168 Benchmark]: Toolchain (without parser) took 27435.45 ms. Allocated memory was 144.2 MB in the beginning and 622.9 MB in the end (delta: 478.7 MB). Free memory was 100.7 MB in the beginning and 97.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 482.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:53:29,421 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 144.2 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-21 13:53:29,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.44 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 100.7 MB in the beginning and 172.4 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:53:29,422 INFO L168 Benchmark]: Boogie Preprocessor took 111.60 ms. Allocated memory is still 202.4 MB. Free memory was 172.1 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 13:53:29,423 INFO L168 Benchmark]: RCFGBuilder took 1150.86 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 168.0 MB in the beginning and 200.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:53:29,424 INFO L168 Benchmark]: TraceAbstraction took 25523.81 ms. Allocated memory was 233.3 MB in the beginning and 622.9 MB in the end (delta: 389.5 MB). Free memory was 198.4 MB in the beginning and 97.2 MB in the end (delta: 101.2 MB). Peak memory consumption was 490.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:53:29,427 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 144.2 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.44 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 100.7 MB in the beginning and 172.4 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.60 ms. Allocated memory is still 202.4 MB. Free memory was 172.1 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1150.86 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 168.0 MB in the beginning and 200.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25523.81 ms. Allocated memory was 233.3 MB in the beginning and 622.9 MB in the end (delta: 389.5 MB). Free memory was 198.4 MB in the beginning and 97.2 MB in the end (delta: 101.2 MB). Peak memory consumption was 490.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 1722 SDslu, 881 SDs, 0 SdLazy, 4219 SolverSat, 1156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 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...