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_spec1_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:14:38,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:14:38,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:14:38,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:14:38,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:14:38,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:14:38,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:14:38,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:14:38,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:14:38,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:14:38,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:14:38,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:14:38,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:14:38,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:14:38,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:14:38,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:14:38,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:14:38,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:14:38,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:14:38,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:14:38,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:14:38,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:14:38,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:14:38,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:14:38,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:14:38,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:14:38,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:14:38,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:14:38,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:14:38,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:14:38,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:14:38,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:14:38,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:14:38,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:14:38,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:14:38,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:14:38,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:14:38,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:14:38,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:14:38,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:14:38,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:14:38,819 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 [2019-10-13 23:14:38,838 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:14:38,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:14:38,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:14:38,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:14:38,840 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:14:38,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:14:38,841 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:14:38,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:14:38,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:14:38,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:14:38,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:14:38,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:14:38,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:14:38,842 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:14:38,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:14:38,844 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:14:38,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:14:38,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:14:38,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:14:38,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:14:38,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:14:38,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:14:38,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:14:38,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:14:38,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:14:38,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:14:38,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:14:38,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:14:38,846 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 [2019-10-13 23:14:39,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:14:39,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:14:39,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:14:39,172 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:14:39,173 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:14:39,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-13 23:14:39,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e6e772b/6b2672d035194c3e91a002ef909b6299/FLAGa2fb736a1 [2019-10-13 23:14:39,743 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:14:39,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-13 23:14:39,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e6e772b/6b2672d035194c3e91a002ef909b6299/FLAGa2fb736a1 [2019-10-13 23:14:40,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e6e772b/6b2672d035194c3e91a002ef909b6299 [2019-10-13 23:14:40,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:14:40,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:14:40,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:14:40,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:14:40,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:14:40,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392121d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40, skipping insertion in model container [2019-10-13 23:14:40,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,135 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:14:40,186 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:14:40,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:14:40,688 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:14:40,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:14:40,865 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:14:40,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40 WrapperNode [2019-10-13 23:14:40,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:14:40,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:14:40,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:14:40,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:14:40,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (1/1) ... [2019-10-13 23:14:40,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:14:40,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:14:40,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:14:40,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:14:40,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (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 [2019-10-13 23:14:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:14:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:14:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:14:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:14:41,030 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:14:41,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:14:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:14:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:14:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:14:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:14:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:14:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:14:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:14:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:14:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:14:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:14:41,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:14:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:14:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:14:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:14:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:14:41,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:14:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:14:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:14:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:14:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:14:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:14:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:14:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:14:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:14:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:14:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:14:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:14:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:14:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:14:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:14:41,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:14:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:14:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:14:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:14:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:14:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:14:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:14:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:14:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:14:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:14:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:14:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:14:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:14:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:14:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:14:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:14:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:14:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:14:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:14:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:14:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:14:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:14:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:14:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:14:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:14:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:14:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:14:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:14:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:14:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:14:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:14:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:14:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:14:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:14:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:14:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:14:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:14:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:14:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:14:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:14:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:14:42,735 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:14:42,735 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:14:42,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:42 BoogieIcfgContainer [2019-10-13 23:14:42,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:14:42,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:14:42,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:14:42,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:14:42,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:40" (1/3) ... [2019-10-13 23:14:42,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eac38a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:42, skipping insertion in model container [2019-10-13 23:14:42,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:40" (2/3) ... [2019-10-13 23:14:42,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eac38a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:42, skipping insertion in model container [2019-10-13 23:14:42,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:42" (3/3) ... [2019-10-13 23:14:42,746 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2019-10-13 23:14:42,756 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:14:42,765 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:14:42,777 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:14:42,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:14:42,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:14:42,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:14:42,805 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:14:42,806 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:14:42,806 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:14:42,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:14:42,806 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:14:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2019-10-13 23:14:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:14:42,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:42,839 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] [2019-10-13 23:14:42,841 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:42,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1995718927, now seen corresponding path program 1 times [2019-10-13 23:14:42,854 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:42,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601591935] [2019-10-13 23:14:42,855 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:42,855 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:42,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:14:43,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601591935] [2019-10-13 23:14:43,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:14:43,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:14:43,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299691503] [2019-10-13 23:14:43,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:14:43,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:14:43,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:14:43,290 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2019-10-13 23:14:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:43,338 INFO L93 Difference]: Finished difference Result 253 states and 306 transitions. [2019-10-13 23:14:43,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:14:43,340 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-13 23:14:43,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:43,355 INFO L225 Difference]: With dead ends: 253 [2019-10-13 23:14:43,356 INFO L226 Difference]: Without dead ends: 127 [2019-10-13 23:14:43,361 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 [2019-10-13 23:14:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-13 23:14:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-10-13 23:14:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-13 23:14:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2019-10-13 23:14:43,477 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 42 [2019-10-13 23:14:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:43,478 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2019-10-13 23:14:43,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:14:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2019-10-13 23:14:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 23:14:43,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:43,488 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] [2019-10-13 23:14:43,489 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1543283696, now seen corresponding path program 1 times [2019-10-13 23:14:43,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:43,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132143022] [2019-10-13 23:14:43,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:43,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:43,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:14:43,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132143022] [2019-10-13 23:14:43,645 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:14:43,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:14:43,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115745061] [2019-10-13 23:14:43,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:14:43,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:43,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:14:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:14:43,651 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 3 states. [2019-10-13 23:14:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:43,689 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2019-10-13 23:14:43,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:14:43,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-13 23:14:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:43,693 INFO L225 Difference]: With dead ends: 201 [2019-10-13 23:14:43,693 INFO L226 Difference]: Without dead ends: 119 [2019-10-13 23:14:43,695 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 [2019-10-13 23:14:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-13 23:14:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-10-13 23:14:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-13 23:14:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2019-10-13 23:14:43,710 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 43 [2019-10-13 23:14:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:43,711 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2019-10-13 23:14:43,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:14:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2019-10-13 23:14:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 23:14:43,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:43,714 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] [2019-10-13 23:14:43,715 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1849024731, now seen corresponding path program 1 times [2019-10-13 23:14:43,715 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:43,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970611783] [2019-10-13 23:14:43,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:43,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:43,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:14:43,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970611783] [2019-10-13 23:14:43,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:14:43,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:14:43,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505587218] [2019-10-13 23:14:43,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:14:43,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:43,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:14:43,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:14:43,977 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand 7 states. [2019-10-13 23:14:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:44,563 INFO L93 Difference]: Finished difference Result 358 states and 424 transitions. [2019-10-13 23:14:44,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:14:44,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-10-13 23:14:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:44,568 INFO L225 Difference]: With dead ends: 358 [2019-10-13 23:14:44,568 INFO L226 Difference]: Without dead ends: 261 [2019-10-13 23:14:44,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:14:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-13 23:14:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2019-10-13 23:14:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-10-13 23:14:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2019-10-13 23:14:44,625 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 47 [2019-10-13 23:14:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:44,625 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2019-10-13 23:14:44,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:14:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2019-10-13 23:14:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 23:14:44,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:44,634 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] [2019-10-13 23:14:44,634 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:44,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1498427456, now seen corresponding path program 1 times [2019-10-13 23:14:44,635 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:44,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315932731] [2019-10-13 23:14:44,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:44,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:44,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:14:44,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315932731] [2019-10-13 23:14:44,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:14:44,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:14:44,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750308479] [2019-10-13 23:14:44,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:14:44,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:44,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:14:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:14:44,776 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand 6 states. [2019-10-13 23:14:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:45,042 INFO L93 Difference]: Finished difference Result 688 states and 831 transitions. [2019-10-13 23:14:45,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:14:45,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-10-13 23:14:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:45,052 INFO L225 Difference]: With dead ends: 688 [2019-10-13 23:14:45,053 INFO L226 Difference]: Without dead ends: 461 [2019-10-13 23:14:45,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:14:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-13 23:14:45,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2019-10-13 23:14:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-13 23:14:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 534 transitions. [2019-10-13 23:14:45,159 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 534 transitions. Word has length 51 [2019-10-13 23:14:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:45,160 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 534 transitions. [2019-10-13 23:14:45,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:14:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 534 transitions. [2019-10-13 23:14:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 23:14:45,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:45,165 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] [2019-10-13 23:14:45,165 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:45,166 INFO L82 PathProgramCache]: Analyzing trace with hash -854929592, now seen corresponding path program 1 times [2019-10-13 23:14:45,166 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:45,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796840728] [2019-10-13 23:14:45,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:45,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:45,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:14:45,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796840728] [2019-10-13 23:14:45,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:14:45,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:14:45,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216056133] [2019-10-13 23:14:45,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:14:45,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:14:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:14:45,296 INFO L87 Difference]: Start difference. First operand 449 states and 534 transitions. Second operand 7 states. [2019-10-13 23:14:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:45,954 INFO L93 Difference]: Finished difference Result 1179 states and 1520 transitions. [2019-10-13 23:14:45,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:14:45,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2019-10-13 23:14:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:45,964 INFO L225 Difference]: With dead ends: 1179 [2019-10-13 23:14:45,965 INFO L226 Difference]: Without dead ends: 752 [2019-10-13 23:14:45,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:14:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-13 23:14:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 663. [2019-10-13 23:14:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2019-10-13 23:14:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 789 transitions. [2019-10-13 23:14:46,065 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 789 transitions. Word has length 54 [2019-10-13 23:14:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:46,066 INFO L462 AbstractCegarLoop]: Abstraction has 663 states and 789 transitions. [2019-10-13 23:14:46,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:14:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 789 transitions. [2019-10-13 23:14:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 23:14:46,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:46,071 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:14:46,071 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:46,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1591472147, now seen corresponding path program 1 times [2019-10-13 23:14:46,072 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:46,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660571531] [2019-10-13 23:14:46,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:46,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:46,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:14:46,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660571531] [2019-10-13 23:14:46,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919152965] [2019-10-13 23:14:46,310 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 [2019-10-13 23:14:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:46,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-13 23:14:46,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:14:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:14:46,611 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:14:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:14:47,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:14:47,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 11] total 23 [2019-10-13 23:14:47,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138369825] [2019-10-13 23:14:47,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:14:47,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:47,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:14:47,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2019-10-13 23:14:47,270 INFO L87 Difference]: Start difference. First operand 663 states and 789 transitions. Second operand 11 states. [2019-10-13 23:14:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:48,067 INFO L93 Difference]: Finished difference Result 1591 states and 1975 transitions. [2019-10-13 23:14:48,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:14:48,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2019-10-13 23:14:48,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:48,077 INFO L225 Difference]: With dead ends: 1591 [2019-10-13 23:14:48,077 INFO L226 Difference]: Without dead ends: 950 [2019-10-13 23:14:48,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2019-10-13 23:14:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-10-13 23:14:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 930. [2019-10-13 23:14:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2019-10-13 23:14:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1118 transitions. [2019-10-13 23:14:48,140 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1118 transitions. Word has length 85 [2019-10-13 23:14:48,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:48,141 INFO L462 AbstractCegarLoop]: Abstraction has 930 states and 1118 transitions. [2019-10-13 23:14:48,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:14:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1118 transitions. [2019-10-13 23:14:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:14:48,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:48,146 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:14:48,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:14:48,352 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash -857534902, now seen corresponding path program 1 times [2019-10-13 23:14:48,353 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:48,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296644462] [2019-10-13 23:14:48,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:48,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:48,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:14:48,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296644462] [2019-10-13 23:14:48,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626036689] [2019-10-13 23:14:48,671 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 [2019-10-13 23:14:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:48,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-13 23:14:48,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:14:49,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:49,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:49,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:14:49,268 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:14:50,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:50,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:50,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:50,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:14:50,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:14:50,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-13 23:14:50,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266876672] [2019-10-13 23:14:50,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 23:14:50,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:14:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 23:14:50,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 23:14:50,981 INFO L87 Difference]: Start difference. First operand 930 states and 1118 transitions. Second operand 14 states. [2019-10-13 23:14:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:14:53,503 INFO L93 Difference]: Finished difference Result 2679 states and 3364 transitions. [2019-10-13 23:14:53,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:14:53,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2019-10-13 23:14:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:14:53,519 INFO L225 Difference]: With dead ends: 2679 [2019-10-13 23:14:53,519 INFO L226 Difference]: Without dead ends: 1771 [2019-10-13 23:14:53,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 241 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-13 23:14:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2019-10-13 23:14:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1659. [2019-10-13 23:14:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2019-10-13 23:14:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2013 transitions. [2019-10-13 23:14:53,639 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2013 transitions. Word has length 132 [2019-10-13 23:14:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:14:53,640 INFO L462 AbstractCegarLoop]: Abstraction has 1659 states and 2013 transitions. [2019-10-13 23:14:53,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 23:14:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2013 transitions. [2019-10-13 23:14:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:14:53,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:14:53,649 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:14:53,854 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:14:53,855 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:14:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:14:53,855 INFO L82 PathProgramCache]: Analyzing trace with hash -155037944, now seen corresponding path program 1 times [2019-10-13 23:14:53,856 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:14:53,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367451247] [2019-10-13 23:14:53,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:53,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:14:53,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:14:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:14:54,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367451247] [2019-10-13 23:14:54,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835512044] [2019-10-13 23:14:54,285 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 [2019-10-13 23:14:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:14:54,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-13 23:14:54,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:14:54,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:54,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:14:54,801 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:14:55,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:14:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:14:55,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [270212479] [2019-10-13 23:14:55,823 INFO L162 IcfgInterpreter]: Started Sifa with 107 locations of interest [2019-10-13 23:14:55,823 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:14:55,831 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:14:55,849 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:14:55,850 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:15:06,101 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-13 23:15:07,905 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:15:08,043 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:15:08,176 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:15:08,298 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:15:08,557 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:08,764 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:08,956 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:09,135 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:09,514 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-13 23:15:09,675 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:09,843 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:10,006 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:10,113 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:10,234 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:15:10,243 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-13 23:15:10,511 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-13 23:15:10,512 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-13 23:15:10,662 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:10,802 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:10,937 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:11,158 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:11,304 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:11,462 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:11,685 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:11,901 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-13 23:15:12,009 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:12,144 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:12,254 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:12,368 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:12,520 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:12,728 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:12,855 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:13,193 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:13,502 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:13,819 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:13,942 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:14,153 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:14,461 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:14,668 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:14,782 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:15,097 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:15,226 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:15,337 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:15,474 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:15,682 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:15:15,788 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:15,949 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:16,056 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:16,164 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:16,296 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:15:16,422 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:16,530 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:16,652 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:16,879 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:15:16,987 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:17,118 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:17,244 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:17,352 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:17,470 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:17,583 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:15:17,693 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:15:17,811 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:15:17,921 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:15:18,038 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:15:18,191 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:15:18,398 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:15:18,583 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 567