/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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:33:09,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:33:09,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:33:09,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:33:09,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:33:09,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:33:09,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:33:09,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:33:09,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:33:09,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:33:09,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:33:09,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:33:09,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:33:09,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:33:09,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:33:09,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:33:09,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:33:09,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:33:09,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:33:09,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:33:09,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:33:09,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:33:09,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:33:09,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:33:09,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:33:09,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:33:09,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:33:09,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:33:09,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:33:09,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:33:09,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:33:09,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:33:09,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:33:09,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:33:09,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:33:09,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:33:09,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:33:09,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:33:09,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:33:09,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:33:09,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:33:09,843 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 04:33:09,872 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:33:09,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:33:09,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:33:09,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:33:09,877 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:33:09,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:33:09,877 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:33:09,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:33:09,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:33:09,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:33:09,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:33:09,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:33:09,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:33:09,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:33:09,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:33:09,882 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:33:09,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:33:09,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:33:09,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:33:09,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:33:09,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:33:09,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:33:09,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:33:09,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:33:09,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:33:09,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:33:09,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:33:09,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:33:09,887 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 04:33:10,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:33:10,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:33:10,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:33:10,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:33:10,195 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:33:10,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-11-07 04:33:10,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b976e1/6cf02814e50740df9b7fdb56ad24f3e3/FLAGfe8f60459 [2019-11-07 04:33:10,752 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:33:10,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-11-07 04:33:10,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b976e1/6cf02814e50740df9b7fdb56ad24f3e3/FLAGfe8f60459 [2019-11-07 04:33:11,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b976e1/6cf02814e50740df9b7fdb56ad24f3e3 [2019-11-07 04:33:11,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:33:11,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:33:11,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:11,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:33:11,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:33:11,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497ae45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11, skipping insertion in model container [2019-11-07 04:33:11,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,108 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:33:11,170 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:33:11,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:11,635 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:33:11,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:33:11,764 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:33:11,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11 WrapperNode [2019-11-07 04:33:11,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:33:11,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:33:11,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:33:11,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:33:11,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (1/1) ... [2019-11-07 04:33:11,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:33:11,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:33:11,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:33:11,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:33:11,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (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 04:33:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:33:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:33:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:33:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:33:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:33:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:33:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:33:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:33:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-07 04:33:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:33:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:33:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:33:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:33:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:33:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:33:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:33:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:33:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:33:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:33:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:33:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:33:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:33:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:33:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:33:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:33:11,921 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:33:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:33:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:33:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:33:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:33:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:33:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:33:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:33:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:33:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:33:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:33:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:33:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:33:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:33:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:33:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:33:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:33:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:33:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:33:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:33:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-07 04:33:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:33:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:33:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:33:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:33:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:33:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:33:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:33:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:33:13,486 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:33:13,487 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:33:13,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:13 BoogieIcfgContainer [2019-11-07 04:33:13,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:33:13,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:33:13,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:33:13,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:33:13,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:33:11" (1/3) ... [2019-11-07 04:33:13,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09fe16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:13, skipping insertion in model container [2019-11-07 04:33:13,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:11" (2/3) ... [2019-11-07 04:33:13,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09fe16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:13, skipping insertion in model container [2019-11-07 04:33:13,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:13" (3/3) ... [2019-11-07 04:33:13,500 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2019-11-07 04:33:13,511 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:33:13,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:33:13,533 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:33:13,572 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:33:13,573 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:33:13,573 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:33:13,573 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:33:13,574 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:33:13,574 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:33:13,574 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:33:13,574 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:33:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2019-11-07 04:33:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:33:13,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:13,606 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 04:33:13,608 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash 932161007, now seen corresponding path program 1 times [2019-11-07 04:33:13,623 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:13,623 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953696183] [2019-11-07 04:33:13,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:14,006 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 04:33:14,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953696183] [2019-11-07 04:33:14,008 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:14,009 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:33:14,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919066204] [2019-11-07 04:33:14,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:33:14,015 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:14,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:33:14,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:33:14,028 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2019-11-07 04:33:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:14,112 INFO L93 Difference]: Finished difference Result 243 states and 292 transitions. [2019-11-07 04:33:14,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:33:14,127 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-11-07 04:33:14,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:14,148 INFO L225 Difference]: With dead ends: 243 [2019-11-07 04:33:14,149 INFO L226 Difference]: Without dead ends: 122 [2019-11-07 04:33:14,158 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 04:33:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-07 04:33:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-11-07 04:33:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-11-07 04:33:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2019-11-07 04:33:14,215 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 42 [2019-11-07 04:33:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:14,216 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2019-11-07 04:33:14,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:33:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2019-11-07 04:33:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:33:14,220 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:14,220 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 04:33:14,221 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1254270614, now seen corresponding path program 1 times [2019-11-07 04:33:14,221 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:14,222 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932196144] [2019-11-07 04:33:14,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:14,421 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 04:33:14,421 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932196144] [2019-11-07 04:33:14,422 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:14,422 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:33:14,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866324989] [2019-11-07 04:33:14,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:14,424 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:14,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:14,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:33:14,425 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand 3 states. [2019-11-07 04:33:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:14,449 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2019-11-07 04:33:14,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:14,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 04:33:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:14,453 INFO L225 Difference]: With dead ends: 201 [2019-11-07 04:33:14,453 INFO L226 Difference]: Without dead ends: 114 [2019-11-07 04:33:14,455 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 04:33:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-07 04:33:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-11-07 04:33:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-07 04:33:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2019-11-07 04:33:14,498 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 43 [2019-11-07 04:33:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:14,498 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2019-11-07 04:33:14,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2019-11-07 04:33:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-07 04:33:14,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:14,504 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] [2019-11-07 04:33:14,505 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash -72457433, now seen corresponding path program 1 times [2019-11-07 04:33:14,506 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:14,506 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742809903] [2019-11-07 04:33:14,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:14,624 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 04:33:14,624 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742809903] [2019-11-07 04:33:14,625 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:14,626 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:33:14,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506557673] [2019-11-07 04:33:14,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:14,627 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:14,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:14,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:33:14,630 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 7 states. [2019-11-07 04:33:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:15,013 INFO L93 Difference]: Finished difference Result 206 states and 237 transitions. [2019-11-07 04:33:15,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:33:15,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-11-07 04:33:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:15,016 INFO L225 Difference]: With dead ends: 206 [2019-11-07 04:33:15,016 INFO L226 Difference]: Without dead ends: 114 [2019-11-07 04:33:15,017 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 04:33:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-07 04:33:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-11-07 04:33:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-07 04:33:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2019-11-07 04:33:15,031 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 45 [2019-11-07 04:33:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:15,032 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2019-11-07 04:33:15,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2019-11-07 04:33:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-07 04:33:15,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:15,034 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] [2019-11-07 04:33:15,035 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:15,035 INFO L82 PathProgramCache]: Analyzing trace with hash 138210273, now seen corresponding path program 1 times [2019-11-07 04:33:15,035 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:15,035 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806271779] [2019-11-07 04:33:15,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:15,133 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 04:33:15,135 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806271779] [2019-11-07 04:33:15,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:15,135 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:33:15,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904818142] [2019-11-07 04:33:15,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:33:15,136 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:15,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:33:15,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:33:15,137 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 5 states. [2019-11-07 04:33:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:15,671 INFO L93 Difference]: Finished difference Result 296 states and 347 transitions. [2019-11-07 04:33:15,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:33:15,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-11-07 04:33:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:15,674 INFO L225 Difference]: With dead ends: 296 [2019-11-07 04:33:15,675 INFO L226 Difference]: Without dead ends: 204 [2019-11-07 04:33:15,676 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 04:33:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-11-07 04:33:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 189. [2019-11-07 04:33:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2019-11-07 04:33:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2019-11-07 04:33:15,700 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 62 [2019-11-07 04:33:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:15,700 INFO L462 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2019-11-07 04:33:15,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:33:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2019-11-07 04:33:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-07 04:33:15,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:15,703 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] [2019-11-07 04:33:15,703 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2141093705, now seen corresponding path program 1 times [2019-11-07 04:33:15,703 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:15,707 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807291303] [2019-11-07 04:33:15,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:15,881 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 04:33:15,881 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807291303] [2019-11-07 04:33:15,882 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:15,882 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:33:15,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166296119] [2019-11-07 04:33:15,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:33:15,885 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:15,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:33:15,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:33:15,886 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand 10 states. [2019-11-07 04:33:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:16,380 INFO L93 Difference]: Finished difference Result 538 states and 613 transitions. [2019-11-07 04:33:16,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:33:16,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-11-07 04:33:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:16,385 INFO L225 Difference]: With dead ends: 538 [2019-11-07 04:33:16,386 INFO L226 Difference]: Without dead ends: 371 [2019-11-07 04:33:16,390 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 04:33:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-11-07 04:33:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2019-11-07 04:33:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2019-11-07 04:33:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2019-11-07 04:33:16,446 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 72 [2019-11-07 04:33:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:16,448 INFO L462 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2019-11-07 04:33:16,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:33:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2019-11-07 04:33:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:33:16,453 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:16,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:16,454 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:16,454 INFO L82 PathProgramCache]: Analyzing trace with hash -456623096, now seen corresponding path program 1 times [2019-11-07 04:33:16,455 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:16,455 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711381483] [2019-11-07 04:33:16,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:33:16,623 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711381483] [2019-11-07 04:33:16,624 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:16,624 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:33:16,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789173399] [2019-11-07 04:33:16,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:33:16,625 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:16,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:33:16,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:33:16,626 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 9 states. [2019-11-07 04:33:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:17,429 INFO L93 Difference]: Finished difference Result 815 states and 911 transitions. [2019-11-07 04:33:17,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 04:33:17,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2019-11-07 04:33:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:17,437 INFO L225 Difference]: With dead ends: 815 [2019-11-07 04:33:17,437 INFO L226 Difference]: Without dead ends: 648 [2019-11-07 04:33:17,438 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 04:33:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-11-07 04:33:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 645. [2019-11-07 04:33:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-07 04:33:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 711 transitions. [2019-11-07 04:33:17,484 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 711 transitions. Word has length 118 [2019-11-07 04:33:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:17,485 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 711 transitions. [2019-11-07 04:33:17,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:33:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 711 transitions. [2019-11-07 04:33:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:33:17,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:17,488 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:33:17,489 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:17,489 INFO L82 PathProgramCache]: Analyzing trace with hash 493415339, now seen corresponding path program 1 times [2019-11-07 04:33:17,489 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:17,490 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263020796] [2019-11-07 04:33:17,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:33:17,814 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263020796] [2019-11-07 04:33:17,814 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617109347] [2019-11-07 04:33:17,814 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 04:33:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:18,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:33:18,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:33:18,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:33:18,412 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:33:18,412 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [14] total 19 [2019-11-07 04:33:18,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717744503] [2019-11-07 04:33:18,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:33:18,414 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:33:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:33:18,414 INFO L87 Difference]: Start difference. First operand 645 states and 711 transitions. Second operand 7 states. [2019-11-07 04:33:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:18,659 INFO L93 Difference]: Finished difference Result 658 states and 725 transitions. [2019-11-07 04:33:18,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:33:18,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-11-07 04:33:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:18,664 INFO L225 Difference]: With dead ends: 658 [2019-11-07 04:33:18,664 INFO L226 Difference]: Without dead ends: 655 [2019-11-07 04:33:18,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:33:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2019-11-07 04:33:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 645. [2019-11-07 04:33:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-07 04:33:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 709 transitions. [2019-11-07 04:33:18,706 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 709 transitions. Word has length 118 [2019-11-07 04:33:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:18,707 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 709 transitions. [2019-11-07 04:33:18,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:33:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 709 transitions. [2019-11-07 04:33:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:33:18,710 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:18,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:18,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:18,917 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:18,917 INFO L82 PathProgramCache]: Analyzing trace with hash 283819144, now seen corresponding path program 1 times [2019-11-07 04:33:18,919 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:18,919 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404477997] [2019-11-07 04:33:18,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 04:33:19,060 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404477997] [2019-11-07 04:33:19,060 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72295354] [2019-11-07 04:33:19,061 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 04:33:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:19,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:33:19,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:19,472 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 04:33:19,702 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:33:19,702 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-11-07 04:33:19,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354642199] [2019-11-07 04:33:19,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:33:19,705 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:33:19,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:33:19,706 INFO L87 Difference]: Start difference. First operand 645 states and 709 transitions. Second operand 3 states. [2019-11-07 04:33:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:19,788 INFO L93 Difference]: Finished difference Result 1268 states and 1396 transitions. [2019-11-07 04:33:19,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:33:19,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-11-07 04:33:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:19,794 INFO L225 Difference]: With dead ends: 1268 [2019-11-07 04:33:19,794 INFO L226 Difference]: Without dead ends: 645 [2019-11-07 04:33:19,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 250 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 04:33:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-11-07 04:33:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 595. [2019-11-07 04:33:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 04:33:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 627 transitions. [2019-11-07 04:33:19,834 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 627 transitions. Word has length 125 [2019-11-07 04:33:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:19,836 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 627 transitions. [2019-11-07 04:33:19,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:33:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 627 transitions. [2019-11-07 04:33:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:33:19,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:19,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:20,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:20,047 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:20,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:20,048 INFO L82 PathProgramCache]: Analyzing trace with hash -233038195, now seen corresponding path program 1 times [2019-11-07 04:33:20,048 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:20,048 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63123746] [2019-11-07 04:33:20,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 04:33:20,446 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63123746] [2019-11-07 04:33:20,447 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:33:20,447 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 04:33:20,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826774685] [2019-11-07 04:33:20,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:33:20,448 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:20,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:33:20,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:33:20,449 INFO L87 Difference]: Start difference. First operand 595 states and 627 transitions. Second operand 14 states. [2019-11-07 04:33:20,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:20,901 INFO L93 Difference]: Finished difference Result 903 states and 968 transitions. [2019-11-07 04:33:20,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:33:20,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2019-11-07 04:33:20,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:20,906 INFO L225 Difference]: With dead ends: 903 [2019-11-07 04:33:20,906 INFO L226 Difference]: Without dead ends: 616 [2019-11-07 04:33:20,907 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 04:33:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-07 04:33:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 585. [2019-11-07 04:33:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-11-07 04:33:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 613 transitions. [2019-11-07 04:33:20,941 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 613 transitions. Word has length 125 [2019-11-07 04:33:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:20,942 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 613 transitions. [2019-11-07 04:33:20,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:33:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 613 transitions. [2019-11-07 04:33:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:33:20,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:20,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:20,945 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash 16149934, now seen corresponding path program 1 times [2019-11-07 04:33:20,946 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:20,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004981989] [2019-11-07 04:33:20,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:33:21,193 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004981989] [2019-11-07 04:33:21,194 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797679019] [2019-11-07 04:33:21,194 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 04:33:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:21,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-07 04:33:21,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:21,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:21,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:21,766 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:22,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:22,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:22,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:23,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:23,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:23,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:23,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:33:23,731 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:33:23,732 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-11-07 04:33:23,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077900956] [2019-11-07 04:33:23,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:33:23,733 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:33:23,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:33:23,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 04:33:23,734 INFO L87 Difference]: Start difference. First operand 585 states and 613 transitions. Second operand 12 states. [2019-11-07 04:33:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:33:25,705 INFO L93 Difference]: Finished difference Result 1067 states and 1154 transitions. [2019-11-07 04:33:25,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:33:25,706 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2019-11-07 04:33:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:33:25,710 INFO L225 Difference]: With dead ends: 1067 [2019-11-07 04:33:25,710 INFO L226 Difference]: Without dead ends: 710 [2019-11-07 04:33:25,712 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 238 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 04:33:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-11-07 04:33:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 685. [2019-11-07 04:33:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2019-11-07 04:33:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 733 transitions. [2019-11-07 04:33:25,759 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 733 transitions. Word has length 131 [2019-11-07 04:33:25,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:33:25,759 INFO L462 AbstractCegarLoop]: Abstraction has 685 states and 733 transitions. [2019-11-07 04:33:25,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:33:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 733 transitions. [2019-11-07 04:33:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 04:33:25,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:33:25,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:25,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:33:25,968 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:33:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:33:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1819701009, now seen corresponding path program 1 times [2019-11-07 04:33:25,968 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:33:25,969 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471136576] [2019-11-07 04:33:25,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:33:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:33:26,220 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471136576] [2019-11-07 04:33:26,221 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134279053] [2019-11-07 04:33:26,221 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 04:33:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:33:26,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-07 04:33:26,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:33:26,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:33:26,691 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:33:27,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:33:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:33:27,450 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119156659] [2019-11-07 04:33:27,500 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2019-11-07 04:33:27,500 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:33:27,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:33:27,515 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:33:27,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:33:39,120 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-07 04:33:40,777 WARN L191 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:33:40,904 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:41,084 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:41,270 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:41,575 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:33:41,701 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:41,844 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:33:42,044 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:33:42,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-11-07 04:33:42,063 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-11-07 04:33:42,291 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:42,456 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:42,629 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:42,780 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:42,884 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:43,006 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:43,112 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:43,223 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:43,369 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:43,569 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-11-07 04:33:43,692 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:43,860 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:43,993 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,114 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,218 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,342 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,501 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,641 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,746 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:44,939 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:45,112 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:45,262 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:45,459 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:33:45,641 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-11-07 04:33:45,753 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-11-07 04:33:45,874 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:46,058 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-11-07 04:33:46,258 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-11-07 04:33:46,478 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:46,662 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:33:46,772 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:33:46,899 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:33:47,008 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:33:47,119 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:33:47,238 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-11-07 04:33:47,260 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-11-07 04:33:47,275 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 542 for LOIs [2019-11-07 04:33:47,510 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 555 [2019-11-07 04:33:47,822 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:33:48,167 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 567 [2019-11-07 04:33:48,579 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:33:49,292 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 590 [2019-11-07 04:33:49,484 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 590 [2019-11-07 04:33:49,877 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 591 DAG size of output: 591 [2019-11-07 04:33:50,144 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 595 DAG size of output: 592 [2019-11-07 04:33:50,425 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 581 [2019-11-07 04:33:50,589 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 580