/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:03:53,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:03:53,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:03:53,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:03:53,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:03:53,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:03:53,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:03:53,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:03:53,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:03:53,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:03:53,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:03:53,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:03:53,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:03:53,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:03:53,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:03:53,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:03:53,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:03:53,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:03:53,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:03:53,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:03:53,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:03:53,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:03:53,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:03:53,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:03:53,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:03:53,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:03:53,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:03:53,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:03:53,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:03:53,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:03:53,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:03:53,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:03:53,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:03:53,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:03:53,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:03:53,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:03:53,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:03:53,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:03:53,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:03:53,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:03:53,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:03:53,741 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 [2020-08-18 20:03:53,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:03:53,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:03:53,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:03:53,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:03:53,769 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:03:53,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:03:53,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:03:53,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:03:53,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:03:53,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:03:53,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:03:53,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:03:53,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:03:53,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:03:53,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:03:53,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:03:53,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:03:53,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:03:53,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:03:53,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:03:53,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:03:53,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:03:53,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:03:53,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:03:53,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:03:53,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:03:53,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:03:53,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:03:53,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:03:53,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:03:54,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:03:54,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:03:54,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:03:54,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:03:54,117 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:03:54,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-18 20:03:54,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eec504ee6/26c1c657920b4b228930fe8d3753df0f/FLAG9d585c5ea [2020-08-18 20:03:54,771 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:03:54,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-18 20:03:54,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eec504ee6/26c1c657920b4b228930fe8d3753df0f/FLAG9d585c5ea [2020-08-18 20:03:55,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eec504ee6/26c1c657920b4b228930fe8d3753df0f [2020-08-18 20:03:55,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:03:55,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:03:55,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:03:55,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:03:55,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:03:55,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657b8eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55, skipping insertion in model container [2020-08-18 20:03:55,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:03:55,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:03:55,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:03:55,596 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:03:55,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:03:55,779 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:03:55,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55 WrapperNode [2020-08-18 20:03:55,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:03:55,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:03:55,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:03:55,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:03:55,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (1/1) ... [2020-08-18 20:03:55,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:03:55,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:03:55,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:03:55,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:03:55,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (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 [2020-08-18 20:03:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:03:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:03:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:03:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:03:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:03:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:03:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:03:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:03:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:03:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:03:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:03:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:03:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:03:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:03:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:03:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:03:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:03:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:03:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:03:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:03:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:03:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:03:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:03:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:03:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:03:55,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:03:55,967 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:03:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:03:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:03:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:03:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:03:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:03:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:03:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:03:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:03:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:03:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:03:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:03:55,972 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:03:55,972 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:03:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:03:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:03:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:03:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:03:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:03:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:03:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:03:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:03:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:03:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:03:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:03:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:03:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:03:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:03:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:03:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:03:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:03:57,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:03:57,023 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:03:57,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:03:57 BoogieIcfgContainer [2020-08-18 20:03:57,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:03:57,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:03:57,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:03:57,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:03:57,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:03:55" (1/3) ... [2020-08-18 20:03:57,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c3559a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:03:57, skipping insertion in model container [2020-08-18 20:03:57,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:55" (2/3) ... [2020-08-18 20:03:57,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c3559a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:03:57, skipping insertion in model container [2020-08-18 20:03:57,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:03:57" (3/3) ... [2020-08-18 20:03:57,045 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-08-18 20:03:57,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:03:57,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:03:57,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:03:57,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:03:57,100 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:03:57,100 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:03:57,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:03:57,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:03:57,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:03:57,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:03:57,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:03:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-18 20:03:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:03:57,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:03:57,133 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] [2020-08-18 20:03:57,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:03:57,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:03:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-08-18 20:03:57,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:03:57,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514419984] [2020-08-18 20:03:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:03:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,764 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:03:57,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:03:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:03:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:03:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:03:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:03:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:03:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:03:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:03:57,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514419984] [2020-08-18 20:03:57,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:03:57,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:03:57,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234721029] [2020-08-18 20:03:57,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:03:57,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:03:57,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:03:57,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:03:57,908 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-18 20:03:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:03:58,945 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-18 20:03:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:03:58,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:03:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:03:58,962 INFO L225 Difference]: With dead ends: 269 [2020-08-18 20:03:58,963 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 20:03:58,967 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 [2020-08-18 20:03:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 20:03:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-18 20:03:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 20:03:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 20:03:59,119 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-18 20:03:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:03:59,120 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 20:03:59,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:03:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 20:03:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:03:59,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:03:59,124 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] [2020-08-18 20:03:59,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:03:59,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:03:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:03:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-08-18 20:03:59,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:03:59,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909054557] [2020-08-18 20:03:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:03:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,510 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:03:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:03:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:03:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:03:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:03:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:03:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:03:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:03:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:03:59,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909054557] [2020-08-18 20:03:59,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:03:59,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:03:59,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367698945] [2020-08-18 20:03:59,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:03:59,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:03:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:03:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:03:59,580 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-18 20:03:59,992 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:00,661 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-18 20:04:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:04:00,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:04:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:00,665 INFO L225 Difference]: With dead ends: 193 [2020-08-18 20:04:00,665 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 20:04:00,667 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 [2020-08-18 20:04:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 20:04:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-18 20:04:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 20:04:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-18 20:04:00,699 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-18 20:04:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:00,700 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-18 20:04:00,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:04:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-18 20:04:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:04:00,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:00,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:00,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:04:00,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-08-18 20:04:00,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:00,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966100135] [2020-08-18 20:04:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,044 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:04:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:04:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:01,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966100135] [2020-08-18 20:04:01,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:01,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:04:01,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899901406] [2020-08-18 20:04:01,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:04:01,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:01,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:04:01,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:04:01,153 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-18 20:04:01,561 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:01,848 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:02,106 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:02,349 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:03,101 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:04,455 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-18 20:04:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:04:04,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 20:04:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:04,461 INFO L225 Difference]: With dead ends: 363 [2020-08-18 20:04:04,461 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 20:04:04,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:04:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 20:04:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-18 20:04:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-18 20:04:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-18 20:04:04,555 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-18 20:04:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:04,555 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-18 20:04:04,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:04:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-18 20:04:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:04:04,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:04,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:04,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:04:04,559 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:04,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:04,559 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-08-18 20:04:04,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:04,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143214351] [2020-08-18 20:04:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,846 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:04:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:04:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:04:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:04,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143214351] [2020-08-18 20:04:04,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:04,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:04:04,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158889629] [2020-08-18 20:04:04,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:04:04,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:04,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:04:04,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:04:04,923 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 8 states. [2020-08-18 20:04:05,323 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:06,414 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:06,727 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:06,982 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:07,256 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:07,581 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:08,271 INFO L93 Difference]: Finished difference Result 698 states and 907 transitions. [2020-08-18 20:04:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:04:08,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 20:04:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:08,279 INFO L225 Difference]: With dead ends: 698 [2020-08-18 20:04:08,280 INFO L226 Difference]: Without dead ends: 506 [2020-08-18 20:04:08,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:04:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-18 20:04:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 387. [2020-08-18 20:04:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-18 20:04:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2020-08-18 20:04:08,403 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 57 [2020-08-18 20:04:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:08,404 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2020-08-18 20:04:08,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:04:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2020-08-18 20:04:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 20:04:08,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:08,408 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] [2020-08-18 20:04:08,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:04:08,408 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1390027601, now seen corresponding path program 1 times [2020-08-18 20:04:08,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:08,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64519420] [2020-08-18 20:04:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,701 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:04:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:04:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:04:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:08,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64519420] [2020-08-18 20:04:08,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:08,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:08,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184791566] [2020-08-18 20:04:08,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:08,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:08,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:08,827 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand 9 states. [2020-08-18 20:04:09,288 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:10,188 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:10,461 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:10,719 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:11,182 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:11,464 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:12,188 INFO L93 Difference]: Finished difference Result 1120 states and 1488 transitions. [2020-08-18 20:04:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:04:12,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 20:04:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:12,200 INFO L225 Difference]: With dead ends: 1120 [2020-08-18 20:04:12,200 INFO L226 Difference]: Without dead ends: 757 [2020-08-18 20:04:12,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:04:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-08-18 20:04:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 599. [2020-08-18 20:04:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-18 20:04:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2020-08-18 20:04:12,342 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 61 [2020-08-18 20:04:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:12,343 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2020-08-18 20:04:12,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2020-08-18 20:04:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:04:12,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:12,346 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] [2020-08-18 20:04:12,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:04:12,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:12,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:12,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1223870708, now seen corresponding path program 1 times [2020-08-18 20:04:12,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:12,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989122021] [2020-08-18 20:04:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,600 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:04:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:04:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:12,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989122021] [2020-08-18 20:04:12,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:12,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:12,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196668251] [2020-08-18 20:04:12,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:12,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:12,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:12,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:12,792 INFO L87 Difference]: Start difference. First operand 599 states and 735 transitions. Second operand 9 states. [2020-08-18 20:04:13,325 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:14,225 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:14,473 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:04:14,758 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:15,030 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:04:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:16,652 INFO L93 Difference]: Finished difference Result 2076 states and 2949 transitions. [2020-08-18 20:04:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:04:16,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 20:04:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:16,668 INFO L225 Difference]: With dead ends: 2076 [2020-08-18 20:04:16,668 INFO L226 Difference]: Without dead ends: 1501 [2020-08-18 20:04:16,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:04:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-08-18 20:04:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1127. [2020-08-18 20:04:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-18 20:04:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1380 transitions. [2020-08-18 20:04:16,987 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1380 transitions. Word has length 78 [2020-08-18 20:04:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:16,989 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1380 transitions. [2020-08-18 20:04:16,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1380 transitions. [2020-08-18 20:04:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:04:16,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:16,998 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] [2020-08-18 20:04:16,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:04:16,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-08-18 20:04:17,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:17,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288478296] [2020-08-18 20:04:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,403 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:04:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:04:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:17,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288478296] [2020-08-18 20:04:17,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:17,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:17,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64645389] [2020-08-18 20:04:17,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:17,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:17,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:17,524 INFO L87 Difference]: Start difference. First operand 1127 states and 1380 transitions. Second operand 9 states. [2020-08-18 20:04:18,615 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:18,888 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:04:19,152 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:19,404 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:20,526 INFO L93 Difference]: Finished difference Result 2617 states and 3478 transitions. [2020-08-18 20:04:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:04:20,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 20:04:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:20,540 INFO L225 Difference]: With dead ends: 2617 [2020-08-18 20:04:20,550 INFO L226 Difference]: Without dead ends: 1514 [2020-08-18 20:04:20,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:04:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-08-18 20:04:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1167. [2020-08-18 20:04:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-08-18 20:04:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1420 transitions. [2020-08-18 20:04:20,800 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1420 transitions. Word has length 78 [2020-08-18 20:04:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:20,801 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1420 transitions. [2020-08-18 20:04:20,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1420 transitions. [2020-08-18 20:04:20,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:04:20,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:20,805 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] [2020-08-18 20:04:20,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:04:20,805 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:20,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-08-18 20:04:20,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:20,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923544012] [2020-08-18 20:04:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,084 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:04:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:04:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:21,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923544012] [2020-08-18 20:04:21,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:21,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:04:21,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558710547] [2020-08-18 20:04:21,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:04:21,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:04:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:04:21,217 INFO L87 Difference]: Start difference. First operand 1167 states and 1420 transitions. Second operand 11 states. [2020-08-18 20:04:21,813 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:22,054 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:22,292 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:22,899 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:23,153 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:23,395 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:24,446 INFO L93 Difference]: Finished difference Result 2323 states and 3044 transitions. [2020-08-18 20:04:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:04:24,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-18 20:04:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:24,458 INFO L225 Difference]: With dead ends: 2323 [2020-08-18 20:04:24,459 INFO L226 Difference]: Without dead ends: 1180 [2020-08-18 20:04:24,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:04:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-08-18 20:04:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 949. [2020-08-18 20:04:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-08-18 20:04:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1124 transitions. [2020-08-18 20:04:24,720 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1124 transitions. Word has length 78 [2020-08-18 20:04:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:24,721 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1124 transitions. [2020-08-18 20:04:24,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:04:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1124 transitions. [2020-08-18 20:04:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 20:04:24,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:24,726 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] [2020-08-18 20:04:24,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:04:24,727 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:24,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:24,727 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-08-18 20:04:24,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:24,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551757514] [2020-08-18 20:04:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:04:24,817 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:04:24,818 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:04:24,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:04:24,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:04:24 BoogieIcfgContainer [2020-08-18 20:04:24,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:04:24,873 INFO L168 Benchmark]: Toolchain (without parser) took 29809.39 ms. Allocated memory was 140.0 MB in the beginning and 644.3 MB in the end (delta: 504.4 MB). Free memory was 101.7 MB in the beginning and 440.8 MB in the end (delta: -339.1 MB). Peak memory consumption was 165.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:24,879 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:04:24,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.57 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 167.4 MB in the end (delta: -65.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:24,888 INFO L168 Benchmark]: Boogie Preprocessor took 106.69 ms. Allocated memory is still 202.4 MB. Free memory was 167.4 MB in the beginning and 163.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:24,890 INFO L168 Benchmark]: RCFGBuilder took 1147.23 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 163.4 MB in the beginning and 195.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:24,891 INFO L168 Benchmark]: TraceAbstraction took 27833.86 ms. Allocated memory was 235.9 MB in the beginning and 644.3 MB in the end (delta: 408.4 MB). Free memory was 195.3 MB in the beginning and 440.8 MB in the end (delta: -245.5 MB). Peak memory consumption was 162.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:24,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.57 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 167.4 MB in the end (delta: -65.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.69 ms. Allocated memory is still 202.4 MB. Free memory was 167.4 MB in the beginning and 163.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1147.23 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 163.4 MB in the beginning and 195.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27833.86 ms. Allocated memory was 235.9 MB in the beginning and 644.3 MB in the end (delta: 408.4 MB). Free memory was 195.3 MB in the beginning and 440.8 MB in the end (delta: -245.5 MB). Peak memory consumption was 162.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L528] int retValue_acc ; [L529] int tmp ; [L533] FCALL select_helpers() [L534] FCALL select_features() [L535] CALL, EXPR valid_product() [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); [L535] RET, EXPR valid_product() [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) [L539] FCALL setup() [L540] CALL runTest() [L522] CALL test() [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 [L190] COND TRUE 1 [L192] COND TRUE splverifierCounter < 4 [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) [L202] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L202] RET waterRise() [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) [L212] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L212] RET changeMethaneLevel() [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) [L235] CALL timeShift() [L257] COND FALSE !(\read(pumpRunning)) [L264] COND TRUE \read(systemActive) [L266] CALL processEnvironment() [L286] int tmp ; [L289] COND TRUE ! pumpRunning [L291] CALL, EXPR isHighWaterLevel() [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; [L389] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L389] RET, EXPR isHighWaterSensorDry() [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); [L291] RET, EXPR isHighWaterLevel() [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) [L295] CALL activatePump() [L314] pumpRunning = 1 [L295] RET activatePump() [L266] RET processEnvironment() [L272] CALL __utac_acc__Specification1_spec__1() [L152] int tmp ; [L153] int tmp___0 ; [L157] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) [L161] CALL, EXPR isPumpRunning() [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); [L161] RET, EXPR isPumpRunning() [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) [L165] CALL __automaton_fail() [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 796 SDtfs, 1497 SDslu, 1034 SDs, 0 SdLazy, 4674 SolverSat, 935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1167occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1352 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 143632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...