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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:21:41,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:21:41,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:21:41,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:21:41,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:21:41,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:21:41,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:21:41,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:21:41,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:21:41,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:21:41,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:21:41,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:21:41,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:21:41,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:21:41,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:21:41,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:21:41,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:21:41,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:21:41,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:21:41,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:21:41,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:21:41,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:21:41,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:21:41,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:21:41,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:21:41,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:21:41,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:21:41,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:21:41,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:21:41,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:21:41,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:21:41,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:21:41,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:21:41,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:21:41,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:21:41,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:21:41,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:21:41,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:21:41,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:21:41,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:21:41,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:21:41,748 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 [2019-10-15 03:21:41,763 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:21:41,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:21:41,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:21:41,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:21:41,765 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:21:41,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:21:41,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:21:41,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:21:41,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:21:41,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:21:41,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:21:41,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:21:41,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:21:41,767 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:21:41,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:21:41,767 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:21:41,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:21:41,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:21:41,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:21:41,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:21:41,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:21:41,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:21:41,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:21:41,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:21:41,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:21:41,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:21:41,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:21:41,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:21:41,770 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 [2019-10-15 03:21:42,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:21:42,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:21:42,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:21:42,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:21:42,083 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:21:42,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-10-15 03:21:42,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958a8e269/0d960041a90646fda9269a6ac64cee17/FLAG2a31be5bc [2019-10-15 03:21:42,758 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:21:42,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-10-15 03:21:42,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958a8e269/0d960041a90646fda9269a6ac64cee17/FLAG2a31be5bc [2019-10-15 03:21:43,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958a8e269/0d960041a90646fda9269a6ac64cee17 [2019-10-15 03:21:43,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:21:43,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:21:43,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:43,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:21:43,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:21:43,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de7e4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43, skipping insertion in model container [2019-10-15 03:21:43,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,032 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:21:43,094 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:21:43,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:43,534 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:21:43,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:43,652 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:21:43,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43 WrapperNode [2019-10-15 03:21:43,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:43,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:21:43,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:21:43,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:21:43,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:21:43,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:21:43,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:21:43,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:21:43,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (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 [2019-10-15 03:21:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:21:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:21:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:21:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:21:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:21:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:21:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:21:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:21:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:21:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:21:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:21:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:21:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:21:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:21:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:21:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:21:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:21:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:21:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:21:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:21:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:21:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:21:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:21:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:21:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:21:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:21:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:21:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:21:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:21:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:21:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:21:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:21:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:21:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:21:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:21:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:21:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:21:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:21:43,833 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:21:43,833 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:21:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:21:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:21:43,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:21:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:21:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:21:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:21:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:21:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:21:43,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:21:43,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:21:43,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:43,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:21:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:21:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:21:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:21:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:21:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:21:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:21:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:21:45,457 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:21:45,458 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:21:45,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:45 BoogieIcfgContainer [2019-10-15 03:21:45,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:21:45,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:21:45,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:21:45,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:21:45,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:43" (1/3) ... [2019-10-15 03:21:45,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3120e2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:45, skipping insertion in model container [2019-10-15 03:21:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (2/3) ... [2019-10-15 03:21:45,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3120e2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:45, skipping insertion in model container [2019-10-15 03:21:45,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:45" (3/3) ... [2019-10-15 03:21:45,469 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product57.cil.c [2019-10-15 03:21:45,481 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:21:45,490 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:21:45,502 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:21:45,529 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:21:45,530 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:21:45,530 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:21:45,530 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:21:45,530 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:21:45,530 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:21:45,531 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:21:45,531 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:21:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2019-10-15 03:21:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:21:45,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:45,565 INFO L380 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] [2019-10-15 03:21:45,567 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash 602218542, now seen corresponding path program 1 times [2019-10-15 03:21:45,585 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:45,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477925523] [2019-10-15 03:21:45,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:45,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477925523] [2019-10-15 03:21:45,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:45,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:21:45,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743026839] [2019-10-15 03:21:45,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:21:45,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:45,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:21:45,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:21:45,966 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 2 states. [2019-10-15 03:21:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:46,048 INFO L93 Difference]: Finished difference Result 237 states and 280 transitions. [2019-10-15 03:21:46,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:21:46,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:21:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:46,063 INFO L225 Difference]: With dead ends: 237 [2019-10-15 03:21:46,063 INFO L226 Difference]: Without dead ends: 119 [2019-10-15 03:21:46,068 INFO L600 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 [2019-10-15 03:21:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-15 03:21:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-10-15 03:21:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-15 03:21:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2019-10-15 03:21:46,125 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 42 [2019-10-15 03:21:46,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,126 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2019-10-15 03:21:46,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:21:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2019-10-15 03:21:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:21:46,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,130 INFO L380 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] [2019-10-15 03:21:46,130 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:46,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash -865784585, now seen corresponding path program 1 times [2019-10-15 03:21:46,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:46,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481074895] [2019-10-15 03:21:46,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:46,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481074895] [2019-10-15 03:21:46,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:46,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:21:46,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033511057] [2019-10-15 03:21:46,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:46,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:46,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:46,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:21:46,251 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 3 states. [2019-10-15 03:21:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:46,279 INFO L93 Difference]: Finished difference Result 195 states and 219 transitions. [2019-10-15 03:21:46,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:46,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:21:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:46,282 INFO L225 Difference]: With dead ends: 195 [2019-10-15 03:21:46,282 INFO L226 Difference]: Without dead ends: 111 [2019-10-15 03:21:46,284 INFO L600 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 [2019-10-15 03:21:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-15 03:21:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-10-15 03:21:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-15 03:21:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2019-10-15 03:21:46,298 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 43 [2019-10-15 03:21:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,299 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2019-10-15 03:21:46,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2019-10-15 03:21:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-15 03:21:46,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,302 INFO L380 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] [2019-10-15 03:21:46,302 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1972021982, now seen corresponding path program 1 times [2019-10-15 03:21:46,303 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:46,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284916534] [2019-10-15 03:21:46,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:46,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284916534] [2019-10-15 03:21:46,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:46,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:21:46,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513822082] [2019-10-15 03:21:46,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:46,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:46,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:21:46,507 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 7 states. [2019-10-15 03:21:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:46,824 INFO L93 Difference]: Finished difference Result 200 states and 225 transitions. [2019-10-15 03:21:46,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:21:46,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-10-15 03:21:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:46,827 INFO L225 Difference]: With dead ends: 200 [2019-10-15 03:21:46,827 INFO L226 Difference]: Without dead ends: 111 [2019-10-15 03:21:46,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-15 03:21:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-10-15 03:21:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-15 03:21:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2019-10-15 03:21:46,840 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 45 [2019-10-15 03:21:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,840 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2019-10-15 03:21:46,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2019-10-15 03:21:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:21:46,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,843 INFO L380 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] [2019-10-15 03:21:46,843 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:46,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:46,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1730274497, now seen corresponding path program 1 times [2019-10-15 03:21:46,844 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:46,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598030732] [2019-10-15 03:21:46,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:46,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598030732] [2019-10-15 03:21:46,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:46,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:21:46,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159010678] [2019-10-15 03:21:46,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:21:46,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:46,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:21:46,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:21:46,994 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 5 states. [2019-10-15 03:21:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:47,453 INFO L93 Difference]: Finished difference Result 284 states and 327 transitions. [2019-10-15 03:21:47,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:21:47,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-10-15 03:21:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:47,459 INFO L225 Difference]: With dead ends: 284 [2019-10-15 03:21:47,459 INFO L226 Difference]: Without dead ends: 195 [2019-10-15 03:21:47,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:21:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-15 03:21:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 180. [2019-10-15 03:21:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-10-15 03:21:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2019-10-15 03:21:47,510 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 58 [2019-10-15 03:21:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:47,513 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2019-10-15 03:21:47,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:21:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2019-10-15 03:21:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-15 03:21:47,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:47,521 INFO L380 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] [2019-10-15 03:21:47,522 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash 19997047, now seen corresponding path program 1 times [2019-10-15 03:21:47,522 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970225485] [2019-10-15 03:21:47,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:47,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970225485] [2019-10-15 03:21:47,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:47,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:21:47,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646518175] [2019-10-15 03:21:47,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:21:47,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:47,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:21:47,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:47,731 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand 10 states. [2019-10-15 03:21:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:48,280 INFO L93 Difference]: Finished difference Result 536 states and 611 transitions. [2019-10-15 03:21:48,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:21:48,283 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2019-10-15 03:21:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:48,288 INFO L225 Difference]: With dead ends: 536 [2019-10-15 03:21:48,289 INFO L226 Difference]: Without dead ends: 378 [2019-10-15 03:21:48,291 INFO L600 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 [2019-10-15 03:21:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-15 03:21:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 364. [2019-10-15 03:21:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-10-15 03:21:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 402 transitions. [2019-10-15 03:21:48,353 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 402 transitions. Word has length 67 [2019-10-15 03:21:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:48,355 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 402 transitions. [2019-10-15 03:21:48,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:21:48,355 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 402 transitions. [2019-10-15 03:21:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:21:48,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:48,363 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:48,363 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1292948161, now seen corresponding path program 1 times [2019-10-15 03:21:48,364 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:48,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376970513] [2019-10-15 03:21:48,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:21:48,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376970513] [2019-10-15 03:21:48,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705035228] [2019-10-15 03:21:48,499 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 [2019-10-15 03:21:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:21:48,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:48,826 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:21:49,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:21:49,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-15 03:21:49,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210822515] [2019-10-15 03:21:49,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:49,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:49,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:21:49,113 INFO L87 Difference]: Start difference. First operand 364 states and 402 transitions. Second operand 3 states. [2019-10-15 03:21:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:49,198 INFO L93 Difference]: Finished difference Result 709 states and 784 transitions. [2019-10-15 03:21:49,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:49,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-15 03:21:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:49,204 INFO L225 Difference]: With dead ends: 709 [2019-10-15 03:21:49,205 INFO L226 Difference]: Without dead ends: 367 [2019-10-15 03:21:49,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 256 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:21:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-10-15 03:21:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 339. [2019-10-15 03:21:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2019-10-15 03:21:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 360 transitions. [2019-10-15 03:21:49,244 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 360 transitions. Word has length 128 [2019-10-15 03:21:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:49,246 INFO L462 AbstractCegarLoop]: Abstraction has 339 states and 360 transitions. [2019-10-15 03:21:49,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 360 transitions. [2019-10-15 03:21:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:21:49,255 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:49,255 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:49,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:49,462 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:49,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1080968167, now seen corresponding path program 1 times [2019-10-15 03:21:49,463 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:49,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368083276] [2019-10-15 03:21:49,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:49,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:49,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 03:21:49,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368083276] [2019-10-15 03:21:49,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536608658] [2019-10-15 03:21:49,590 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 [2019-10-15 03:21:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:49,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:21:49,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:21:49,892 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:21:50,054 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:50,054 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-15 03:21:50,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530042354] [2019-10-15 03:21:50,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:50,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:50,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:50,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:21:50,057 INFO L87 Difference]: Start difference. First operand 339 states and 360 transitions. Second operand 7 states. [2019-10-15 03:21:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:50,275 INFO L93 Difference]: Finished difference Result 348 states and 369 transitions. [2019-10-15 03:21:50,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:21:50,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-15 03:21:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:50,282 INFO L225 Difference]: With dead ends: 348 [2019-10-15 03:21:50,282 INFO L226 Difference]: Without dead ends: 345 [2019-10-15 03:21:50,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:21:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-10-15 03:21:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 339. [2019-10-15 03:21:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2019-10-15 03:21:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 359 transitions. [2019-10-15 03:21:50,312 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 359 transitions. Word has length 115 [2019-10-15 03:21:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:50,313 INFO L462 AbstractCegarLoop]: Abstraction has 339 states and 359 transitions. [2019-10-15 03:21:50,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 359 transitions. [2019-10-15 03:21:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:21:50,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:50,317 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:21:50,525 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:50,526 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash 278854686, now seen corresponding path program 1 times [2019-10-15 03:21:50,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:50,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013308453] [2019-10-15 03:21:50,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:50,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:50,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:21:50,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013308453] [2019-10-15 03:21:50,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438204509] [2019-10-15 03:21:50,846 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 [2019-10-15 03:21:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:51,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-15 03:21:51,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:51,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:51,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:51,414 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:51,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:52,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:52,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:52,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:52,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:52,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:52,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:21:53,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:21:53,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-15 03:21:53,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111631282] [2019-10-15 03:21:53,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:21:53,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:21:53,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 03:21:53,096 INFO L87 Difference]: Start difference. First operand 339 states and 359 transitions. Second operand 12 states. [2019-10-15 03:21:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:55,068 INFO L93 Difference]: Finished difference Result 800 states and 898 transitions. [2019-10-15 03:21:55,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-15 03:21:55,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 125 [2019-10-15 03:21:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:55,072 INFO L225 Difference]: With dead ends: 800 [2019-10-15 03:21:55,072 INFO L226 Difference]: Without dead ends: 483 [2019-10-15 03:21:55,074 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 227 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=397, Invalid=2053, Unknown=0, NotChecked=0, Total=2450 [2019-10-15 03:21:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-10-15 03:21:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 462. [2019-10-15 03:21:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2019-10-15 03:21:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 506 transitions. [2019-10-15 03:21:55,117 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 506 transitions. Word has length 125 [2019-10-15 03:21:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:55,117 INFO L462 AbstractCegarLoop]: Abstraction has 462 states and 506 transitions. [2019-10-15 03:21:55,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:21:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 506 transitions. [2019-10-15 03:21:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:21:55,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:55,120 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:55,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:55,325 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:55,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2113106723, now seen corresponding path program 2 times [2019-10-15 03:21:55,326 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:55,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834107732] [2019-10-15 03:21:55,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:55,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:55,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 03:21:55,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834107732] [2019-10-15 03:21:55,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:55,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-15 03:21:55,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057558004] [2019-10-15 03:21:55,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:21:55,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:21:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:21:55,576 INFO L87 Difference]: Start difference. First operand 462 states and 506 transitions. Second operand 14 states. [2019-10-15 03:21:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:56,002 INFO L93 Difference]: Finished difference Result 745 states and 835 transitions. [2019-10-15 03:21:56,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:21:56,003 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2019-10-15 03:21:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:56,007 INFO L225 Difference]: With dead ends: 745 [2019-10-15 03:21:56,007 INFO L226 Difference]: Without dead ends: 497 [2019-10-15 03:21:56,009 INFO L600 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 [2019-10-15 03:21:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2019-10-15 03:21:56,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 452. [2019-10-15 03:21:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-15 03:21:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 493 transitions. [2019-10-15 03:21:56,080 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 493 transitions. Word has length 128 [2019-10-15 03:21:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:56,081 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 493 transitions. [2019-10-15 03:21:56,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:21:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 493 transitions. [2019-10-15 03:21:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:21:56,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:56,088 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:21:56,088 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash 136520726, now seen corresponding path program 1 times [2019-10-15 03:21:56,089 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:56,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30830901] [2019-10-15 03:21:56,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:56,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:56,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:21:56,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30830901] [2019-10-15 03:21:56,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671484116] [2019-10-15 03:21:56,420 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 [2019-10-15 03:21:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:56,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 03:21:56,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:56,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:56,963 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:57,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:21:57,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671312669] [2019-10-15 03:21:57,790 INFO L162 IcfgInterpreter]: Started Sifa with 104 locations of interest [2019-10-15 03:21:57,790 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:21:57,799 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:21:57,809 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:21:57,810 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:22:07,189 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:22:08,730 WARN L191 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:22:08,850 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:08,983 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:09,106 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:09,338 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:09,552 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:09,765 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:09,953 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:10,257 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:22:10,428 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:10,617 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:10,746 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:10,863 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:10,993 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:11,000 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:22:11,334 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-15 03:22:11,336 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-10-15 03:22:11,481 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:11,593 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:11,719 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:11,838 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:11,948 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:12,125 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:12,255 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:12,364 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:12,493 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:12,685 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 542 [2019-10-15 03:22:12,831 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:12,957 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,277 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,494 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:13,685 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,789 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:14,003 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,115 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:14,344 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,447 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:14,658 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,760 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:14,977 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:15,211 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:15,326 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:15,529 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:15,647 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:15,851 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:15,970 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:16,126 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:16,237 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:16,382 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:16,585 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-15 03:22:16,697 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:16,832 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:16,938 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:17,059 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:17,200 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:17,333 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-15 03:22:17,446 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-15 03:22:17,564 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,682 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,794 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,913 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,105 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 554 [2019-10-15 03:22:18,226 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-15 03:22:18,343 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,458 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-15 03:22:18,587 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-15 03:22:18,717 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-10-15 03:22:18,832 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:18,943 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,111 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,257 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,394 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,526 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,643 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,755 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,876 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:19,987 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:20,098 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:20,217 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 563 [2019-10-15 03:22:20,441 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-15 03:22:20,547 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:20,664 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:21,049 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-15 03:22:21,159 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:21,275 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:21,381 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:21,488 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:21,604 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:21,849 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:21,959 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,080 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,530 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:22,755 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,895 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556