/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:33:53,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:33:53,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:33:53,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:33:53,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:33:53,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:33:53,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:33:53,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:33:53,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:33:53,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:33:53,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:33:53,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:33:53,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:33:53,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:33:53,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:33:53,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:33:53,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:33:53,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:33:53,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:33:53,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:33:53,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:33:53,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:33:53,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:33:53,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:33:53,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:33:53,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:33:53,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:33:53,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:33:53,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:33:53,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:33:53,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:33:53,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:33:53,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:33:53,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:33:53,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:33:53,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:33:53,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:33:53,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:33:53,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:33:53,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:33:53,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:33:53,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:33:53,784 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:33:53,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:33:53,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:33:53,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:33:53,786 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:33:53,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:33:53,786 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:33:53,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:33:53,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:33:53,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:33:53,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:33:53,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:33:53,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:33:53,787 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:33:53,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:33:53,788 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:33:53,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:33:53,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:33:53,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:33:53,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:33:53,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:33:53,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:33:53,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:33:53,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:33:53,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:33:53,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:33:53,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:33:53,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:33:53,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:33:54,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:33:54,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:33:54,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:33:54,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:33:54,138 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:33:54,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-11-07 04:33:54,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2164f6d0/9abd49cad2874d7e9ef737bfba3ee4cb/FLAG5579c47ad [2019-11-07 04:33:54,774 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:33:54,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-11-07 04:33:54,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2164f6d0/9abd49cad2874d7e9ef737bfba3ee4cb/FLAG5579c47ad [2019-11-07 04:33:55,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2164f6d0/9abd49cad2874d7e9ef737bfba3ee4cb [2019-11-07 04:33:55,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:33:55,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:33:55,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:55,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:33:55,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:33:55,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afb881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55, skipping insertion in model container [2019-11-07 04:33:55,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,138 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:33:55,213 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:33:55,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:55,691 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:33:55,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:55,855 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:33:55,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55 WrapperNode [2019-11-07 04:33:55,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:55,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:33:55,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:33:55,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:33:55,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... [2019-11-07 04:33:55,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:33:55,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:33:55,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:33:55,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:33:55,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-07 04:33:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:33:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:33:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:33:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:33:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:33:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:33:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-07 04:33:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:33:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:33:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:33:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:33:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:33:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:33:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:33:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:33:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:33:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:33:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:33:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:33:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:33:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:33:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:33:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:33:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:33:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:33:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:33:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:33:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:33:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:33:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:33:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:33:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:33:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:33:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:33:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:33:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:33:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:33:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:33:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:33:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:33:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:33:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:33:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:33:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:33:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:33:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:33:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:33:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:33:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:33:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:33:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:33:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:33:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:33:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:33:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:33:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:33:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:33:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:33:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:33:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:33:57,822 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:33:57,822 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:33:57,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:57 BoogieIcfgContainer [2019-11-07 04:33:57,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:33:57,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:33:57,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:33:57,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:33:57,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:33:55" (1/3) ... [2019-11-07 04:33:57,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e2af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:57, skipping insertion in model container [2019-11-07 04:33:57,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:55" (2/3) ... [2019-11-07 04:33:57,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e2af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:57, skipping insertion in model container [2019-11-07 04:33:57,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:57" (3/3) ... [2019-11-07 04:33:57,833 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2019-11-07 04:33:57,843 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:33:57,852 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:33:57,864 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:33:57,891 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:33:57,891 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:33:57,891 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:33:57,891 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:33:57,892 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:33:57,892 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:33:57,892 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:33:57,892 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:33:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2019-11-07 04:33:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:33:57,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:57,927 INFO L410 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] [2019-11-07 04:33:57,930 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash -181766063, now seen corresponding path program 1 times [2019-11-07 04:33:57,946 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:57,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187958507] [2019-11-07 04:33:57,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:58,323 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187958507] [2019-11-07 04:33:58,324 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:58,324 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:33:58,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472070331] [2019-11-07 04:33:58,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:33:58,332 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:33:58,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:33:58,345 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 2 states. [2019-11-07 04:33:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:58,388 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2019-11-07 04:33:58,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:33:58,391 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-11-07 04:33:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:58,410 INFO L225 Difference]: With dead ends: 265 [2019-11-07 04:33:58,410 INFO L226 Difference]: Without dead ends: 133 [2019-11-07 04:33:58,415 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:33:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-11-07 04:33:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2019-11-07 04:33:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-07 04:33:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2019-11-07 04:33:58,505 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 42 [2019-11-07 04:33:58,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:58,506 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2019-11-07 04:33:58,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:33:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2019-11-07 04:33:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:33:58,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:58,514 INFO L410 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] [2019-11-07 04:33:58,515 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash -579616042, now seen corresponding path program 1 times [2019-11-07 04:33:58,516 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:58,516 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984548608] [2019-11-07 04:33:58,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:58,691 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984548608] [2019-11-07 04:33:58,692 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:58,692 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:33:58,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395124698] [2019-11-07 04:33:58,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:58,694 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:58,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:58,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:58,695 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand 3 states. [2019-11-07 04:33:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:58,740 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2019-11-07 04:33:58,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:58,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 04:33:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:58,747 INFO L225 Difference]: With dead ends: 219 [2019-11-07 04:33:58,747 INFO L226 Difference]: Without dead ends: 125 [2019-11-07 04:33:58,752 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-07 04:33:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-11-07 04:33:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-07 04:33:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2019-11-07 04:33:58,777 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 43 [2019-11-07 04:33:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:58,778 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2019-11-07 04:33:58,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2019-11-07 04:33:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 04:33:58,781 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:58,782 INFO L410 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] [2019-11-07 04:33:58,782 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash -741704379, now seen corresponding path program 1 times [2019-11-07 04:33:58,783 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:58,783 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053552551] [2019-11-07 04:33:58,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:58,960 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053552551] [2019-11-07 04:33:58,960 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:58,962 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:33:58,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986696649] [2019-11-07 04:33:58,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:58,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:58,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:58,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:33:58,964 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand 7 states. [2019-11-07 04:33:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:59,346 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2019-11-07 04:33:59,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:33:59,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-11-07 04:33:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:59,349 INFO L225 Difference]: With dead ends: 228 [2019-11-07 04:33:59,349 INFO L226 Difference]: Without dead ends: 125 [2019-11-07 04:33:59,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:33:59,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-07 04:33:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-11-07 04:33:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-07 04:33:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2019-11-07 04:33:59,370 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 46 [2019-11-07 04:33:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:59,370 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2019-11-07 04:33:59,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2019-11-07 04:33:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-07 04:33:59,373 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:59,373 INFO L410 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] [2019-11-07 04:33:59,374 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1156525635, now seen corresponding path program 1 times [2019-11-07 04:33:59,374 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:59,375 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896013853] [2019-11-07 04:33:59,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:59,464 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896013853] [2019-11-07 04:33:59,465 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:59,465 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:33:59,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943765429] [2019-11-07 04:33:59,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:33:59,466 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:59,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:33:59,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:33:59,467 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 5 states. [2019-11-07 04:33:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:59,967 INFO L93 Difference]: Finished difference Result 332 states and 391 transitions. [2019-11-07 04:33:59,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:33:59,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2019-11-07 04:33:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:59,974 INFO L225 Difference]: With dead ends: 332 [2019-11-07 04:33:59,975 INFO L226 Difference]: Without dead ends: 229 [2019-11-07 04:33:59,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:33:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-11-07 04:34:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2019-11-07 04:34:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-11-07 04:34:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 232 transitions. [2019-11-07 04:34:00,048 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 232 transitions. Word has length 63 [2019-11-07 04:34:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:00,049 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 232 transitions. [2019-11-07 04:34:00,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:34:00,049 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 232 transitions. [2019-11-07 04:34:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-07 04:34:00,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:00,053 INFO L410 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] [2019-11-07 04:34:00,053 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:00,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1819528347, now seen corresponding path program 1 times [2019-11-07 04:34:00,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:00,054 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355131207] [2019-11-07 04:34:00,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:00,233 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355131207] [2019-11-07 04:34:00,233 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:00,234 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:34:00,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444255650] [2019-11-07 04:34:00,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:34:00,235 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:34:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:34:00,235 INFO L87 Difference]: Start difference. First operand 212 states and 232 transitions. Second operand 10 states. [2019-11-07 04:34:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:00,793 INFO L93 Difference]: Finished difference Result 630 states and 717 transitions. [2019-11-07 04:34:00,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:34:00,793 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2019-11-07 04:34:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:00,798 INFO L225 Difference]: With dead ends: 630 [2019-11-07 04:34:00,798 INFO L226 Difference]: Without dead ends: 440 [2019-11-07 04:34:00,800 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:34:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-11-07 04:34:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 426. [2019-11-07 04:34:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-11-07 04:34:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 472 transitions. [2019-11-07 04:34:00,842 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 472 transitions. Word has length 73 [2019-11-07 04:34:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:00,842 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 472 transitions. [2019-11-07 04:34:00,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:34:00,842 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 472 transitions. [2019-11-07 04:34:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 04:34:00,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:00,847 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:00,847 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1175806380, now seen corresponding path program 1 times [2019-11-07 04:34:00,848 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:00,848 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197540231] [2019-11-07 04:34:00,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:34:01,050 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197540231] [2019-11-07 04:34:01,050 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:01,051 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:34:01,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150477789] [2019-11-07 04:34:01,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:34:01,052 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:01,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:34:01,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:34:01,052 INFO L87 Difference]: Start difference. First operand 426 states and 472 transitions. Second operand 9 states. [2019-11-07 04:34:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:01,856 INFO L93 Difference]: Finished difference Result 976 states and 1093 transitions. [2019-11-07 04:34:01,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 04:34:01,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 133 [2019-11-07 04:34:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:01,862 INFO L225 Difference]: With dead ends: 976 [2019-11-07 04:34:01,862 INFO L226 Difference]: Without dead ends: 786 [2019-11-07 04:34:01,864 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:34:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2019-11-07 04:34:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 783. [2019-11-07 04:34:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2019-11-07 04:34:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 867 transitions. [2019-11-07 04:34:01,915 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 867 transitions. Word has length 133 [2019-11-07 04:34:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:01,915 INFO L462 AbstractCegarLoop]: Abstraction has 783 states and 867 transitions. [2019-11-07 04:34:01,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:34:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 867 transitions. [2019-11-07 04:34:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:34:01,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:01,921 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:01,921 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:01,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2111747162, now seen corresponding path program 1 times [2019-11-07 04:34:01,922 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:01,922 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237776399] [2019-11-07 04:34:01,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:34:02,034 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237776399] [2019-11-07 04:34:02,035 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817715858] [2019-11-07 04:34:02,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:02,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:34:02,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:34:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:02,402 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:34:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:34:02,755 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:34:02,755 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-11-07 04:34:02,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655198740] [2019-11-07 04:34:02,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:34:02,757 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:02,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:34:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:34:02,758 INFO L87 Difference]: Start difference. First operand 783 states and 867 transitions. Second operand 3 states. [2019-11-07 04:34:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:02,855 INFO L93 Difference]: Finished difference Result 1547 states and 1714 transitions. [2019-11-07 04:34:02,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:34:02,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-11-07 04:34:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:02,863 INFO L225 Difference]: With dead ends: 1547 [2019-11-07 04:34:02,863 INFO L226 Difference]: Without dead ends: 786 [2019-11-07 04:34:02,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:34:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2019-11-07 04:34:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 717. [2019-11-07 04:34:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 04:34:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 765 transitions. [2019-11-07 04:34:02,918 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 765 transitions. Word has length 140 [2019-11-07 04:34:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:02,919 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 765 transitions. [2019-11-07 04:34:02,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:34:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 765 transitions. [2019-11-07 04:34:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 04:34:02,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:02,927 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:03,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:03,134 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:03,134 INFO L82 PathProgramCache]: Analyzing trace with hash -574104665, now seen corresponding path program 1 times [2019-11-07 04:34:03,134 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:03,135 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138175293] [2019-11-07 04:34:03,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 04:34:03,363 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138175293] [2019-11-07 04:34:03,363 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156129839] [2019-11-07 04:34:03,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:03,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:34:03,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:34:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:34:03,646 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:34:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:34:03,842 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:34:03,843 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-11-07 04:34:03,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802730037] [2019-11-07 04:34:03,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:34:03,844 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:34:03,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:34:03,845 INFO L87 Difference]: Start difference. First operand 717 states and 765 transitions. Second operand 7 states. [2019-11-07 04:34:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:04,103 INFO L93 Difference]: Finished difference Result 730 states and 779 transitions. [2019-11-07 04:34:04,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:34:04,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-11-07 04:34:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:04,108 INFO L225 Difference]: With dead ends: 730 [2019-11-07 04:34:04,108 INFO L226 Difference]: Without dead ends: 727 [2019-11-07 04:34:04,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:34:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-07 04:34:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 717. [2019-11-07 04:34:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 04:34:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 763 transitions. [2019-11-07 04:34:04,155 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 763 transitions. Word has length 127 [2019-11-07 04:34:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:04,157 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 763 transitions. [2019-11-07 04:34:04,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:34:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 763 transitions. [2019-11-07 04:34:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:34:04,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:04,161 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:04,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:04,397 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1546399480, now seen corresponding path program 2 times [2019-11-07 04:34:04,398 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:04,398 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581142812] [2019-11-07 04:34:04,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 04:34:04,642 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581142812] [2019-11-07 04:34:04,642 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:04,642 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 04:34:04,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274273355] [2019-11-07 04:34:04,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:34:04,644 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:34:04,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:34:04,645 INFO L87 Difference]: Start difference. First operand 717 states and 763 transitions. Second operand 14 states. [2019-11-07 04:34:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:05,057 INFO L93 Difference]: Finished difference Result 1299 states and 1446 transitions. [2019-11-07 04:34:05,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:34:05,058 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-11-07 04:34:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:05,065 INFO L225 Difference]: With dead ends: 1299 [2019-11-07 04:34:05,065 INFO L226 Difference]: Without dead ends: 966 [2019-11-07 04:34:05,066 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:34:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-11-07 04:34:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 815. [2019-11-07 04:34:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2019-11-07 04:34:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 881 transitions. [2019-11-07 04:34:05,120 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 881 transitions. Word has length 140 [2019-11-07 04:34:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:05,121 INFO L462 AbstractCegarLoop]: Abstraction has 815 states and 881 transitions. [2019-11-07 04:34:05,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:34:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 881 transitions. [2019-11-07 04:34:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 04:34:05,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:05,125 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:05,125 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash 725871869, now seen corresponding path program 1 times [2019-11-07 04:34:05,126 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:05,126 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168958096] [2019-11-07 04:34:05,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:34:05,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168958096] [2019-11-07 04:34:05,463 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492560207] [2019-11-07 04:34:05,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:05,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-07 04:34:05,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:34:05,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:05,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:05,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:06,027 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:34:06,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:07,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:07,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:07,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:34:08,012 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:34:08,013 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 13] total 36 [2019-11-07 04:34:08,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305039719] [2019-11-07 04:34:08,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:34:08,014 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:34:08,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 04:34:08,015 INFO L87 Difference]: Start difference. First operand 815 states and 881 transitions. Second operand 14 states. [2019-11-07 04:34:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:10,597 INFO L93 Difference]: Finished difference Result 1891 states and 2180 transitions. [2019-11-07 04:34:10,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:34:10,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 146 [2019-11-07 04:34:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:10,607 INFO L225 Difference]: With dead ends: 1891 [2019-11-07 04:34:10,607 INFO L226 Difference]: Without dead ends: 1098 [2019-11-07 04:34:10,610 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 269 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=398, Invalid=2572, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 04:34:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2019-11-07 04:34:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1003. [2019-11-07 04:34:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2019-11-07 04:34:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1111 transitions. [2019-11-07 04:34:10,685 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1111 transitions. Word has length 146 [2019-11-07 04:34:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:10,685 INFO L462 AbstractCegarLoop]: Abstraction has 1003 states and 1111 transitions. [2019-11-07 04:34:10,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:34:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1111 transitions. [2019-11-07 04:34:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:34:10,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:10,691 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:10,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:10,896 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:10,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2003549317, now seen corresponding path program 1 times [2019-11-07 04:34:10,897 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:10,897 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555695005] [2019-11-07 04:34:10,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 04:34:11,213 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555695005] [2019-11-07 04:34:11,214 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706258724] [2019-11-07 04:34:11,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:11,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-07 04:34:11,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:34:11,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:11,775 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:34:12,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,485 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 04:34:12,562 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [448534042] [2019-11-07 04:34:12,595 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-11-07 04:34:12,595 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:34:12,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:34:12,609 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:34:12,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:34:22,763 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-07 04:34:24,373 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:34:24,501 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:24,660 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:24,782 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:25,051 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:34:25,424 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:34:25,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-11-07 04:34:25,441 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-11-07 04:34:25,678 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:34:25,832 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:34:26,025 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,156 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:34:26,266 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:34:26,384 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,611 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:34:26,732 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,038 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,234 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,346 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,478 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,597 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,712 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,840 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,991 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:28,095 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:28,207 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:28,312 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:28,430 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:28,542 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:28,762 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:28,871 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:28,992 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:29,097 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:29,201 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:29,316 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:29,488 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:29,636 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:29,767 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:34:29,872 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:29,989 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:30,106 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-11-07 04:34:30,123 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-11-07 04:34:30,138 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 544 for LOIs [2019-11-07 04:34:30,379 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-11-07 04:34:30,719 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:31,248 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:34:31,354 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-11-07 04:34:31,830 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:32,230 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:34:32,610 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 574